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I decided to break a little from work and climbed one of the popular sites where people ask questions and, accordingly, receive answers - the truth is not always true. So, the topic was about aluminum and copper radiators, and what is better.

Copper or aluminum radiator?

One of the interlocutors gave the phrase after which I slowly slipped under the table :)

"Aluminum is badly taken warm, but it gives it well, and copper takes good warmth and gives it badly ..." - Punctuation did not save, Pardon

Casting back to the chair remembered the same topic on one of the technical forums opening two years ago, where the Topikstarter proved hard that aluminum is best transmitted heat. Does most people think that if the radiators to computers and power transistors do from it, then it is better?

From my previous article "Copper pads - for / mind" We already know the thermal conductivity of these two metals: copper = 390 W / (M * K) and aluminum = 230 W / (M * K). From here we make a simple conclusion that the latter will take the heat from the source of heating worse, in more than one and a half times.

Next, let's see how hard the temperature "wipe" on these conductors:

Aluminum = 0.5, copper = 0.24
Aluminum = 0.5, copper = 0.24

And here the opponent wins copper, which has the resistance of heat transfer two times lower, so the heat of this metal will "pass" the distance longer and faster (not quite right, but it will be clearer).

Let us turn to another characteristic of these two "rivals" - heat capacity:

The heat capacity of aluminum and copper - wins copper
The heat capacity of aluminum and copper - wins copper

And here we have the same favorite. But do not forget another characteristic - the density of copper is three times more aluminum, so the kilogram of the other metal will be different. And, naturally, the same volume will be distinguished by weight, where the "white metal" wins.

Now, guided by the above data, I'll "break" your brain :). Example - two coolers from the online store with the same (almost no longer found) indicators of power dissipated.

Copper or aluminum radiator?
Copper or aluminum radiator?

Why is the copper zalman easier and less aluminum coolermaster-e?

Because copper is better and faster distributes heating over the entire surface, where it removes the cooler. For this, it does not need volumetric and frequent ribs like an aluminum radiator, which gives the cooling system "Excess" weight.

The only thing why the "red" metal did not become such popular as the opponent is the price and complexity of processing due to the high melting point.

And what is your opinion regarding this issue? Write in the comments.

If you liked the article, put "thumb up", share in social networks or subscribe - this will make it get to the implementation of plans and experiments planted by me that you will also be interested. Thanks :)

Which radiator is better aluminum or copper

What radiator is better - copper or aluminum

Even after the superficial acquaintance with an aluminum and copper magnificence shopped on the storefront, the possesses of pig-iron batteries can lose their sleep and appetite. Before them is a difficult task - to decide which radiator is better: copper or aluminum. And below, we will consider all the advantages and disadvantages of each type.

Article material:

Advantages and disadvantages of aluminum radiator

Immediately it is worth noting that aluminum batteries are two types:

  • Alloyed: aluminum compared to other metals is well combined with high-pressure casting technology than modern producers are successfully used. The cast solid radiator, which means that the maximum durable.
  • Collected-weld radiators: They are made from the profile obtained as a result of pressing aluminum billets. Each section includes two parts cooked with each other. Such a radiator contains several sections fixed with the help of threads. These devices have less strength compared to litas.

The popularity of aluminum radiators is due to the following advantages:

  • Beautiful appearance;
  • Good thermal conductivity - section can have heat transfer in 212 W;
  • Little weight: With dimensions of 80x80x380 mm, one section can weigh no more than 1 kg;
  • A long warranty is issued on the product (from 10 to 20 years).

Modern aluminum radiators due to the addition of silicon have quite acceptable strength. Today, you can easily find a model that is designed to pressure up to 16 atmospheres. Moreover, some manufacturing companies produce radiators capable of withstanding 24 atm pressure.

Unfortunately, aluminum batteries have disadvantages:

  • corrosion exposure;
  • They do not tolerate high temperatures - water should not be heated more than 110 degrees.

Prefabricated models cannot be used in systems whose working environment is antifreeze.

Copper Radiators: Advantages and Disadvantages

Nowadays, only clean copper is used to make a copper radiator: according to the requirements of modern technologies, the number of impurities in no case should be greater than 0.1%. This approach guarantees the following advantages:

  • high strength allowing the device to work even at high pressure in systems (up to 16 atm);
  • High thermal conductivity, causing the same high heat transfer;
  • good resistance to corrosion;
  • The ability to maintain performance even at water temperatures up to 250 degrees.

Another equally important advantage of copper is high plasticity even at low temperatures. If suddenly the heating system will freeze, then the copper elements do not burst, but only deform.

Attention! Copper radiators compared to steel devices are not afraid of the negative effects of chlorine salts, which are quite common in our heating systems, and in abundant quantities.

All listed benefits are due to the durability of this type of heating devices. In addition, the buyer should take into account some drawbacks:

  • High price - a copper battery costs about four times more steel;
  • The simultaneous connection of such batteries with galvanized steel pipes during the movement of the working medium is prohibited - an electrochemical reaction that occurs in this case can provoke the destruction of the material;
  • It is undesirable to use copper batteries in systems where water has high acidity or includes a large number of hardness salts.

You can avoid problems if the addition of copper batteries to steel pipes will pass through brass adapters.

What radiator is better - copper or aluminum? We draw conclusions

After reading the information given above, you guessed that aluminum and copper radiators are largely very similar to each other. These are instruments with excellent design, low weight and high heat transfer. Moreover, the last quality allows you to independently reduce the volume of the heating circuit and change the temperature mode 80/60 instead of 90/70 (feed / reverse) without increasing the area of ​​the radiators themselves.

Both types of radiators due to low heat capacity are distinguished by low thermal inertia, as a result of which the boiler remains in optimal mode when warming on the street.

In this case, aluminum, and copper are soft metals, and therefore poorly carry the presence of solid mechanical impurities in the coolant, as they have an abrasive effect.

In addition, it should be noted that aluminum radiators are largely inferior to copper counterparts. It has already been said that they are contraindicated high temperatures. Here you can add the ability to self-speaking: chemical processes cause the formation of air traffic jams, which from time to time have to burst.

Prefabricated aluminum radiators poorly tolerate the hydraulicians, which occur in heating systems in the case of a sharp change of weather.

Moreover, with frequent changes in temperature, the contact with steel aluminum may suffer due to a significant difference in the coefficients of temperature expansion of such materials. Therefore, it is better to use them in the regions with a cold winter.

The last one worth saying is corrosion. In normal heat supply conditions, such material as aluminum is short-lived, since it needs a coolant with a pH indicator = 7 or 8.

Thus, copper radiators can be considered not so capricious.

What radiator is better - copper or aluminum: reviews of real people

When preparing the material for the site "Repair" we did not manage to find on the thematic forums of discussions about complaints towards aluminum or copper radiators.

But no matter how it was, to afford the purchase of copper radiators can not all - the cost of the device for the arrangement of heating at 20-25 m 2 of the area reaches 25,000 rubles.

Many people consider aluminum batteries very unreliable and light, but they are still used more and more. We hope our article helped you make the right conclusions, and finally offer to watch a video on this topic:

Copper or aluminum radiator?

What radiator is better to buy, copper or aluminum? What makes copper, and aluminum - no? I know it is more expensive and harder, so what is the advantage of copper?

Edit: For more information about the application. I need a radiator for the TEG Peltier module, a cool side. The source of energy is just the warmth of your hand, walking from the hot side. To prevent the neutralization of both sides of Peltier, I use radiators to cool the other side. Therefore, I need the most powerful of affordable radiators so that Pelier has created longer voltage.

You have a lot of good information from users above! Please consider my answer a significant and important addition to the advice that you already have:

The thermal interface material (TIM) may be as easy and even more than the material you choose for your radiator! I say this from the experience and personal testing of tens of types and varieties of interface materials. Your budget, fastening methods and other design parameters are likely to narrow your choice of a specific TIM type. For example: the paste requires that the radiator is mechanically fixed, and the glue is not. Some materials are dirty and complex in use, but they work well, and some things are almost useless in their characteristics and may or may not be easy to use.

I would say with confidence that the Tim you use can have much more value than if you were using copper or aluminum. Not in each case, but the differences in performance can be amazing.

Search for popular and proven materials for processors / heat sinks can give you some good options to choose from.

Copper has the best thermal conductivity.

Aluminum - 200 W M ⋅ K 'Role = »Presentation»> 200 w m ⋅ to copper - 400 W M ⋅ K' ROLE = »PRESENTATION»> 400 W M ⋅ K (from here, fault)

But thermal conductivity inside the solid material is only part of the story. The rest of the story depends on where it is necessary to invest.

Liquid refrigerant

Copper radiator (can also be called its heat transfer unit) will work better than aluminum.

Air with forced convection

In other words, the fan blows on the radiator. The copper radiator will work better than aluminum.

Air S. Natural Convection

I saved the best for the latter. It seems that this is also the work of the OP.

С Natural convection air The copper radiator works only slightly at 1 (in ° C / W) better than aluminum. This is because a narrow place is not in transmission with the metal. When you have air with natural convection, a bottleneck is in the transfer between metal and air, and the same for Al and Cu.

1 I could add that a slight increase is often not worth the cost of copper.

This curve demonstrates a nonlinear dependence between heat transfer and thermal conductivity of the material. The curve is common. This applies to any application that has both a conductive and convection component of a common heat exchange. [Radiation is usually small and in this calculation is ignored.] The shape of the curve is the same regardless of the application area. Quantitative values ​​on the axes are not shown, since they depend on the power, the size of the part and the convective cooling conditions. They become fixed for any application and set of conditions. From the form of the curve it can be seen that heat transfer depends on the thermal conductivity of the material, but There is also a point, knee on the curve, where the increase in thermal conductivity leads to a minor improvement in heat transfer . (source, accent my Na)

20 W M ⋅ K 'ROLE = »PRESENTATION» STYLE = »Position: relative;»> 20 w m ⋅ to

E2 is plastic (source)

This is a difficult question with many factors. Let's look at some physical properties:

  • thermal conductivity (W M ⋅ K 'Role = »Presentation» Style = »Position: relative;»> W M ⋅ K)
  • Volumetric heat capacity (J C m 3 ⋅ K 'ROLE = »PRESENTATION» STYLE = »POSITION: relative;»> J with m 3 ⋅ K)
  • Density (G C M 3 'Role = »Presentation» Style = »Position: relative;»> Gram with m 3)
  • Anode Index (V 'Role = »Presentation» Style = »Position: relative;»> B)
    • Copper: -0.35
    • Aluminum: -0.95

What do these properties mean? For all subsequent comparisons, we consider two materials of the same geometry.

Higher thermal conductivity of copper means that the temperature on the radiator will be more uniform. This can be beneficial because the ends of the radiator will be warmer (and, therefore, more efficiently emitting), and the hot spot attached to the heat load will be colder.

Higher volumetric heat capacity means that there will be more energy to increase the temperature of the radiator. This means that copper is able to "smooth out" the heat load more efficiently. This may mean that short periods of thermal load lead to a decrease in peak temperature.

Obviously, a higher copper density makes it harder.

Different anode material index can make one material more favorable if galvanic corrosion causes anxiety. What will be more favorable, will depend on which other metals are in contact with the radiator.

Based on these physical properties, copper, it would seem, has excellent thermal characteristics in each case. But how to translate it to real performance? We must take into account not only the material of the radiator, but also how this material interacts with the environment. The interface between the radiator and its surroundings (usually air) is very important. In addition, the special geometry of the radiator is also important. We must consider all these things.

The study of Michael Haskell "Comparison of the influence of various heat sink materials on the efficiency of cooling" heat sinks has been carried out by some empirical and computing tests on radiators from aluminum, copper and graphite from the foam of the same geometry. I can significantly simplify the results: (and I will ignore a graphite foam radiator)

For a specific tested aluminum geometry and copper, had very similar characteristics, while copper was a little better. To give you a presentation, with a stream of air of 1.5 m / s thermal resistance of copper from the heater to the air was 1.637 K / W, and aluminum - 1,677. These numbers are so close that it would be difficult to justify additional costs and the weight of copper.

As the heat sink becomes greater compared to the cooled part, copper acquires an advantage over aluminum due to higher thermal conductivity. This is due to the fact that copper is capable of maintaining a more uniform heat distribution, more efficiently removing heat to the limbs and more efficiently using the entire radiating area. In the same study, a computational study was carried out for a cooler with a large processor and a thermal resistance of 0.57 k / W for copper and 0.69 k / W for aluminum was calculated.

What radiator is better aluminum or copper?

The heating radiator is one of the most important elements of the heating system, which gives the energy of the coolant into the environment - air, producing the heating of the room. There are various types of instrument data depending on the material from which they are made.

One of the most sought-after markets are copper and aluminum radiators. Consider their advantages, disadvantages, methods of connecting to heating systems, we define which one is better.

Device of aluminum radiators

The design of the instruments of this type is the monolithic or sectional.

Sectional radiator usually consists of 3-4 sections. The composition of the aluminum alloy contains such components as zinc, titanium and silicon. They attach strength and resistance to corrosion processes by the main material.

The connection of the sections among themselves is made by special fasteners, most often - a threaded connection. Tightness in the connecting places of the channels is achieved by using silicone gaskets. The inner coating of the channels is performed using polymers.

Whole batteries are made of profiles obtained by extrusion. Profiles are combined with welding. This type of compound is the most reliable and durable. The inner surface of the channels is also covered with a polymer layer to prevent corrosion.

Since aluminum is quickly heated, quickly cools (low inertness), the thermal performance of radiators from this material is easily adjusted. Therefore, both sectional, so solid designs can be equipped with thermostat.

Device of copper radiators

The most simple copper batteries consist of pipelines by which circulates the working substance, and the heat exchange part - plates or tubes necessary to increase the area of ​​contact with the environment.

The main channel in which the coolant moves is made from a solid pipe without welding, since copper pipes are easily flexible.

The input and yield of the radiator is set by a shut-off valve, which allows you to adjust the volumetric flow of the coolant in order to increase or decrease the amount of thermal energy released.

Modern models are equipped with aesthetically attractive lattices, which improve convective heat exchange, and automatic temperature controls for the economy of the coolant and maintain a comfortable room temperature.

Advantages and cons of aluminum radiators

Aluminum devices possess the following advantages:

  • Small overall dimensions and weight of both separate sections and the finished device in comparison with the radiators of other species.
  • High heat transfer coefficient, fast heating and cooling, causing the ability to adjust the heat.
  • Efficiency and long service life subject to all requirements.
  • Easy installation and aesthetically attractive appearance.
  • Relatively low cost.
  • Improvement of corrosion in damage to the layer of polymer coating.
  • In places of fastening sections, the leaks may occur.
  • The need to install the air vent.
  • Relatively low pressure of the work environment.

Advantages and cons of copper radiators

Copper radiators are one of the best heating devices at the expense of the following advantages:

  • High heat transfer and efficiency coefficient. According to the last indicator, these devices exceed the cast iron analogs almost 5 times.
  • Good mechanical properties of material cause copper radiators strength.
  • High heat resistance. The possibility of using in systems with high temperature of the working medium (up to 150 degrees Celsius).
  • Infertility of the effects of microorganisms due to the antiseptic properties of copper.
  • Lack of chemical interaction with practically any types of coolants (for example, it is permissible to use antifreeze).
  • Long service life.

Disadvantages of copper devices:

  • High cost regarding prices for radiators of other species.
  • There is an unacceptable combination with pipes made from other metals.
  • Reducing the life of abrasive impurities in the working substance.

How the aluminum models are connected

For connecting heating batteries from aluminum, the following components are required:

  • Maevsky crane with the required connecting size;
  • Gaskets for sealing sections of sections;
  • Brackets for radiator mounting;
  • Right and left passage nuts with a diameter corresponding to the diameter of the pipe nozzles;
  • The plug with a diameter that corresponds to the diameter of the internal passage nut.

Before installation, an assembly of the instrument sections is made, if it is sectional, choose a place to install, apply markup. Most often in the premises they are attached under the window or on the wall. The number of fasteners is chosen depending on the number of sections and the mass of the radiator.

Connection schemes

More often use one of the three options for connecting radiators: the bottom, diagonal or side.

The lower connection type implies the flow and removal of the coolant from the bottom of the radiator. The loss of thermal energy is 15%. Thanks to the possibility of hiding the system pipes, this connection method is beneficial in terms of design.

The diagonal type is most common, since heat loss is only 2%. The method is applicable to two-pipe systems and instruments with a large number of sections. The pipe supplying the coolant is connected to the underwater nozzle of the radiator, located on top, the removal of the coolant is made from the opposite side.

The side type differ from the diagonal placement of the discharge and supplying nozzles on one side of the radiator. Not suitable for devices containing a large number of sections.

How copper models are installed

Installing copper devices is allowed using one of the above connection schemes. Unacceptable connection to steel galvanized pipes. Ideally, the pipes along the movement of the coolant should also be copper. If there is no such possibility, brass fittings are used as connecting elements of pipelines.

To create a heat curtain, install the battery is recommended under the window opening. The gap between the instrument and the windowsill should be from 15 cm, the distance to the wall is at least 3-5 cm. For installation, retaining racks or anchor mounts are used.

In contact places with fasteners, set gaskets from rubber or polymer to avoid damage to the structure, since copper is soft material.

Final comparison - What type of radiator is better?

One of the main criteria for selecting the device is the system to which it will be connected. It is characterized by the following parameters:

  • Pressure of the working substance;
  • Chemical composition of the coolant;
  • The temperature of the work environment.

If in the autonomous heating system, which is installed in private homes listed above, parameters can be monitored, then in the apartments of multi-storey houses, the heating devices of which are connected to the centralized system, it is impossible to perform.

Also in the latter there is a high probability of the occurrence of a hydrowarder (a sharp increase in the pressure of the working medium), due to which the integrity of the structure can be disturbed.

What to choose for an apartment

Copper models are much more expensive than aluminum, but are capable of withstanding high pressure, less susceptible to hydroudar, corrosion, insensitive to the composition of the coolant.

This makes them the ideal option for use in the apartment connected to the centralized heat supply system. The only, but rather significant drawback is a high cost. But it pays off during operation.

What to choose for a private house

Aluminum devices are not strongly inferior on heat output copper, but have a number of disadvantages, due to which their connection to the centralized heat supply system is not recommended.

For the autonomous system installed in a private house, conventional water can be used, which does not adversely affect the aluminum device. It also allows the pressure to adjust the pressure, avoiding a sharp increase (hydroedar). Therefore, to install the radiator in a private house it is advisable to choose an aluminum model.

What are the radiators?

Cooling and heating radiators can be divided into two groups, the first is a copper-brass group, and the second is aluminum-plastic. The separation of course is very conditional, since there are quite a few variations, such as plastic + copper or copper + aluminum + plastic. For example, exceptionally copper radiators do not happen, brass is always present, copper and sometimes steel. Not every motorist knows that the radiators on the VAZ "Classic" have the core of the cell consisting of brass tubes and steel heat sinks, and only the export variants of the "classic" radiators had copper heat sinks for the use of machines in hot countries.

In turn, aluminum radiators are still divided into two additional groups. These are whole-repeating, in which the entire design (tanks + cell core) or only the core (honeycomb) are fused each other, then when the set radiators are made without welding, exclusively mechanically using the roller method.

Since copper and brass, the heat transfer is much more efficient than aluminum, such radiators are preferable, especially since there is always the possibility of repairs in distant areas from large cities (for example, a collective farm or PGT). The price of a high efficiency of almost precious metal becomes the price of a final product, which is more than twice the aluminum analogue. Recently, many manufacturers switch to the use of aluminum radiators in their cars (it is cheaper), but some, such as Japanese manufacturers, remain true to the traditions of quality and to this day produce copper stove radiators and copper cooling radiators. Where a high radiator efficiency is required, which by the way is expressed in kilowatts, manufacturers are trying to use only copper radiators, take for example trucks MAN, SCANIA, DAFF or our cities, kamaz, etc.

Recently, they also gain momentum and combinations of steel irradiated copper radiators, which do not go anywhere in durability with brass, and who would you think it is "sinful"? That's right, the domestic manufacturer. But if on the manufacturer's sites it is honestly stated, then in the bazaar, when buying a new radiator, you will not figure it out what.

Aluminum radiators are used in passenger and trucks, but in view of the fact that they are made of poor materials from poor and professional maintenance. Over rare exceptions, there are specialists who have developed their technology to repair the aluminum part of cells and plastic barrels, but again the same, the repair technologies differ from the master to the master as a technique as well as quality. The argon's welding of the cellular part is ineffective, since the cell thickness rarely exceeds a quarter of a millimeter, so the main type of such repair becomes a burner and work with special adhesives.

It is difficult to say which radiator is better because both of those and others have their advantages and disadvantages. For example, copper radiators and stoves are more efficient, then when aluminum products are cheaper and lung (if the weight of the car is critical). In addition, it is not necessary that all aluminum radiators are low efficiency, on the contrary, Japanese samples (it is difficult to say how they achieve this) are twice thin and less on the area of ​​the CIS's copper analogue, but two times more efficient. If we talk about Chinese and domestic producers, then Chinese aluminum radiators do not withstand any criticism at all, and the domestic samples do not shine the quality of materials and the efficiency.

The period of operation of radiators strongly depends on such factors as the environment of the car's use (by the ocean and the sea, aluminum radiators do not live long, as well as salt from the road do not benefit them), the quality of the coolant used, the overall escape of the machine and many others . But in general, both in general, copper radiators serve a little longer than their aluminum-plastic brothers, since they do not have plastic and rubber parts, which over time heated and crack.

Automotive air conditioners: argon welding, repair of radiators, crimping hoses, replacement of bearings, seals, couplings of air conditioners compressors, refueling, etc.

Copper radiators:

Service:

Repairs:

Typical breakdowns:

What radiator is better to buy - copper or aluminum?

Probably, no one will argue that copper-brass radiators somewhat benefit from aluminum according to technical characteristics and durability. Nevertheless, the copper radiator should be placed not always. To decide which radiator it is better for you - you can read the article below.

What radiator is better, copper or aluminum.

Immediately it should be noted that there is no unambiguous answer to this question. But still, let's try to figure it out. But so that you do not lose time on a complete study of the article, we immediately give its overall conclusion:

It seems to us that the main criterion in choosing a copper or aluminum radiator may be the following: if the aluminum radiator serves for more than 2 years, then it is better to purchase it. If less than 2 years, it is worth thinking about installing a copper-brass radiator.

It is known that in recent years the share of aluminum radiators has increased significantly. And the reason is clear - the aluminum radiator is much cheaper, and in the conditions of increased competition, to establish an expensive copper-brass heat exchanger is a non-dissimilar luxury. In addition, the aluminum radiator is easier, which is also its advantage. It would seem that all the advantages of the aluminum radiator are obvious. But let's see what arguments this advantage can oppose the copper-brass radiator.

So, the aluminum heat exchanger is easier and cheaper. And what does it mean? And this means that it is definitely beneficial to manufacturers. But here is the consumer, then the situation is not so unequivocal. After all, consumers are primarily interested in the costs associated with the operation of the car, which primarily depend on the reliability and durability of the radiator. Let's take turns look at the main characteristics of copper and aluminum heat exchangers and try to compare them.

Reliability

This is the most important question that worries motorists - how long will it work out by the manufacturer or purchased to replace the radiator? It is known that copper-brass radiators serve twice the three longer aluminum analogues. True, it should be honest here that only under the condition of its proper manufacturing. For example, modern copper-brass radiators of MAZ cars strongly lose even many similar Chinese aluminum heat exchangers, since recently they began to produce from welded, and not solid tubes. As a result, such radiators can flow after several months of operation and are affordable to repair. In addition, they often do not disappear and then copper-brass radiators are really extremely unreliable. But it is rather an exception and is a typical example of unreasonable savings. In the case of applying solid tubes (without seams) and compliance with soldering technology - a copper-brass radiator is much more reliable and, based on the physical properties of the metal, much better thanks to the alkali - the main problem of our roads.

Maintainability

Aluminum radiator is much less maintainable. In particular, it is very difficult, and sometimes it is almost impossible to solder the tube to the base of the radiator. You can glue - but it is unreliable. In the copper radiators, this is easier than simple. Mechanical damage to brass tubes is also reliably restored without much difficulty. It is almost impossible to high quality aluminum radiator without special equipment and skills. Often, the large complexity of the repair of an aluminum radiator is the reason for its complete replacement.

Weight

The aluminum radiator of comparable size is lighter than copper-brass and do not argue here, because aluminum is more than three times easier copper. And despite the fact that, due to greater strength in the manufacture of copper radiators, more subtle materials can be used, the mass of the aluminum radiator is still 2-3 times less than copper. And it is an unequivocal plus.

Thermal conductivity.

The thermal conductivity of brass L96 (zinc content is 4%) and aluminum are approximately comparable. But it is necessary to recognize that in the heat exchangers, brass with a large zinc content is mainly used, therefore the thermal conductivity of most types of brass used in heat exchangers is even lower than that of aluminum. But the peculiarity here is that in order to increase the anti-corrosion properties from brass, only tubes are manufactured, and since they are very thin and coolant circulates along them, then their thermal conductivity is not so important. But the heat sinking fins are made exclusively from the copper - and it is also determining with heat exchange. The thermal conductivity of pure copper is approximately 1.6-1.7 times higher than that of aluminum, so the copper heat exchanger in comparable conditions has time to restore approximately one and a half times the thermal energy per unit of time.

How important the thermal conductivity knows the owners of cars, replaced stoves with copper on aluminum. On small turns, aluminum stoves work relatively well. But it is worth the turnover of blowing the stove to increase how aluminum begins not to take advantage of heat from antimony and, accordingly, to give it to the salon - the effectiveness of heat exchange is significantly reduced. The driver and passengers are murdered. Therefore, copper-brass radiators still establish copper-brass radiators to the technique with tough operating conditions.

Heat capacity

It is also a very important indicator. Perhaps you need to figure out. In general, the heat capacity of aluminum per unit mass is higher than that of copper (brass) - 897 J / (kg * k) against 385. But we remember that the mass of the copper-brass radiator with its same size is 3.3 times, so heat capacity The copper radiator of comparable size is as a result of approximately 1.4 times. What does it mean? And this means that the copper radiator is able to select and keep in itself a greater amount of heat and taking into account the higher thermal conductivity to more effectively select heat from the coolant during peak loads. Code Peak loads pass, for example, the engine has dropped momentum, this accumulated heat is evenly given to the outside, without overheating to the toosol and not overloading the engine cooling system.

What conclusions can be made of the foregoing? On the one hand, the copper radiator is more expensive and you will not argue with it. But on the other hand, it can last a few times longer and for this period you can quite possibly change several aluminum heat exchangers. In this case, the cost of one copper radiator may be much less than 2 or more aluminum, especially considering additional replacement costs.

Therefore, before buying a radiator, we always recommend finding out on the forums, how many on average the Chinese aluminum radiator is on your car.

And if it turns out that the heat exchangers on your car are on average for more than 2 years, it will probably make sense to stop on it. If less, then depending on the estimated service life of the car, it is quite possible, a copper-brass radiator may be more reasonable acquisition. Therefore, on economic characteristics there is no unequivocal response. But as for the technical characteristics, the efficiency of the engine cooling system and durability, here the palm of the championship, and with a large margin, belongs to copper-brass heat exchangers.

Making copper radiators:

Www.autoholod.by.

T. (017) 241-18-97, (029) 657-42-87 (Viber), (029) 777-54-24 (without days off)

What radiator is better - copper or aluminum

Even after the surface dating, the metal and copper beauty shop owners of the cast iron can lose their own sleep and appetite. Before them is a difficult task - to decide which radiator is better: copper or metallic. And below we will consider all the pros and cons of each of the species.

Publication material:

  • Aluminum radiators: pros and cons.
  • Copper radiators: pros and cons.
  • What is the heating radiator will be optimal: metallic or copper?
  • Conclusions of professionals.
  • Reviews.
  • The desired video.

Pros and cons of aluminum radiator

Immediately it should be noted that aluminum batteries are two options:

  • Alloyed: Aluminum If compared with other metals is perfectly connected to the casting technology under great pressure, which manufacturers are successfully used in our time. The cast radiator is holistic, and this means, and quite durable.
  • Collected-welded radiators: they are made from the profile resulting from pressing aluminum billets. Each section includes two parts cooked with each other. Such a radiator has several sections recorded with a thread. Such instruments have a smaller reliability if compared with cast.

The demand of aluminum radiators is caused by the following good qualities:

  • beautiful view;
  • Good heat conductivity - section As a rule, it has a heat return on 212 W;
  • Little weight: at 80x80x380 mm sizes One section can weigh less than 1 kg;
  • The product is given a long warranty (from 10 to 20 years).

Modern aluminum radiators due to the addition of silicon have quite appropriate reliability. Nowadays, in places of sale, it is not difficult to find a model that is planned to pressure up to 16 atmospheres. Moreover, some manufacturers produce radiators that are capable of keeping the pressure of 24 atm.

Unfortunately, metal batteries have disadvantages:

  • corrosion propensity;
  • They do not tolerate large temperatures - water should not heal more than 110 degrees.

Prefabricated models are unrealistic to apply in systems, the environment for the operation of which is considered antifreeze.

Copper Radiators: Pros and Cons

Today, only clean copper is used to produce a copper radiator: according to the requirements of new technologies, the number of impurities only should not be more than 0.1%. This approach guarantees the following advantages:

  • high strength, it allows the device to work even with a large pressure in systems (up to 16 atm);
  • Great heat conductivity, which causes similar high heat returns;
  • good resistance to corrosion;
  • Ability to store performance even at water temperature up to 250 degrees.

Our detailed video tutorials about repairs can be found on the Umk4school website.

As for the connection of the copper battery to the pipeline, it may be using a soldering or by the fastening compound as a thread. Thanks to the multifunctionality, the price for assembly works is sufficient to reduce.

Another no less important advantage of copper is high flexibility even at low temperatures. If neither of this, the heating system will freeze, then the copper parts do not burst, but only change.

Attention! Copper radiators If compared with steel devices are not afraid of the negative effects of chlorine salts, which are very often found in our heating systems, and in abundant quantities.

All listed pluses are explained by the durability of such a variety of devices for heating the room. It is also worth saying that the buyer needs to take into account certain disadvantages:

  • big value - the copper battery costs about 4 times more steel;
  • This is prohibited simultaneous connection of such batteries with galvanized pipes with profiles along the movement of the work environment - an electrochemical reaction appears in this case provokes the destruction of the material;
  • It is undesirable to use copper batteries in systems where water has high acidity or includes a lot of hardness salts.

You will be able to avoid problems if the connection of copper batteries to the profile pipes will pass through brass adapters.

What radiator is better - copper or metal? We draw conclusions

Having become acquainted with the information issued, you guessed that metal and copper radiators in most cases are very similar to each other. These are devices with excellent design, small weight and very high heat efficiency. Moreover, the latter quality allows you to make less the amount of the heating contour and adjust the temperature mode of 80/60 to interleve 90/70 (feed / reverse) without increasing the area of ​​the radiators themselves.

Two types of radiators due to the cause of low heat capacity are allocated by small thermal inertia, because of which the boiler remains in good mode when warming on the street.

At the same time, aluminum, and copper are soft metals, and this means that the presence of solid mehpromes in thermal carrier is bad, as they provide abrasive effect.

In addition, it is worth noting that aluminum radiators in most cases are inferior to copper counterparts. It has already been said that large temperatures were contraindicated. Here you can add the ability to self-speaking: chemical processes cause the appearance of air traffic jams that sometimes have to burst.

Prefabricated aluminum radiators carry poorly hydraulic shocks that appear in heating systems in case of a sharp change of weather.

In addition, with frequent changes in temperature, the contact with steel aluminum is likely to suffer due to the principal difference in the thermal expansion coefficients of such materials. Thanks to this, they are better to apply in the regions with a cold winter.

The last thing you need to say is rust. In ordinary heating conditions, such material, as aluminum, is considered short-term, since it needs a thermal carrier with an indicator of pH = 7 or 8.

Similarly, copper radiators can be considered not very capricious.

What radiator is better - copper or metal: reviews of real people

When preparing a material for the site "Our Help" we could not find on the stylistic forums of disputes about complaints towards metal or copper radiators.

But despite anything, to afford the purchase of copper radiators can absolutely not all - the cost of the device on the equipment of heat supply in 20-25 m2 of the area can reach 25,000 rubles.

As a result of such a big price, the copper batteries did not receive so much distribution, thanks to this there are many irregular rumors about them. For example, some are expressed about the concerns that copper will green, as it often happens with monuments or copper roofs. For their part, professionals make them calmer: Patina (greenish oxide) is produced only with prolonged influence of increased humidity.

Most people consider aluminum batteries very unreliable and easy, but they are very often used. We hope our publication was able to help you make the right conclusions, and finally recommend watching videos on this topic:

What radiators are better: copper or aluminum?

Choosing, a copper or aluminum radiator to establish at home, you choose between one of the cheapest and most expensive views of the heater. The choice in favor of each of them is justified in certain cases.

Copper radiators - justified luxury

Consumers who are particularly interested in savings, often seek to buy products from copper. This is explained by the following advantages:

  • high resistance to aggressive media;
  • Copper does not react with the coolant - water and antifreeze can be circulated in them;
  • Prevents the growth of bacteria, after some time of operation, from the inside is covered with the finest film, which protects the product;
  • suitable for coolant temperature up to 150c at operating pressure up to 16 atmospheres;
  • Very high thermal return - approximately 5 times more than other batteries.

Additional advantages are resistance to hydrowards, as well as an attractive appearance. The noble shade of copper is good in itself and does not require painting, which allows you to save on periodic staining. The disadvantage of copper radiators is only one, but seriously affecting their popularity among consumers is a high price.

Aluminum Radiators: Economic Solution

Truly popular popularity uses aluminum radiators. It is easily explained by their high thermal conductivity and at the same time a fairly democratic price. Their main characteristics are as follows:

  • operating pressure up to 12 atmospheres;
  • Section weight up to 1.5kg;
  • Heat power up to 212 watts.

There are models in which metal profiles made by extrusion are welded. The second form is created by casting at elevated pressure and is less prone to leaks than the first. Manufacturers of aluminum radiators guarantee service life from 10 to 20 years. However, it is worth considering that this is true only when the liquid of good quality circulates on such batteries.

Conducting a comparison, which radiator is better than aluminum or copper, it can be concluded that products from aluminum are fully suitable for installation in a private house. The installation of such products will cost you much cheaper. In the autonomous heating network of such a dwelling, water circulates, which will not be destructive effect on such a device. You can spend money on a copper radiator and for many years to forget about it. It will also be an ideal choice for installation in the conditions of an aggressive environment in the Central Committee.

Online store Teplosone has a significant selection of sizes of radiators of different types. We are able to offer products for a repudent taste or economy version of decent quality.

Copper radiator against aluminum: What is more reliable?

01/09/2017

Copper radiator against aluminum: What is more reliable?

Aluminum radiator seems to be a suitable solution for car owners. Sooner or later, most of us are faced with the need to replace the radiator. The type of device you install in the car plays an important role in the engine. Among the many options present in today's market, it is not quite easy to choose the most suitable. Not only aluminum radiators, but also copper, brass, plastic, their analogues are available now. Of all the diversity, the most popular options are copper and aluminum. Below is a comparative analysis for these two types of radiators.

The weight

Copper is heavier than aluminum, so tubes in copper radiators are thin and small. In most copper radiators, tubes are used in 10 mm, while in aluminum radiators, the diameter of the tubes, as a rule, is two times more. Aluminum is easier copper, which allows the use of wider tubes. It should be borne in mind that narrow tubes are easier to be clogged, and this reduces the life of copper radiators.

Maintainability

Welding is considered the usual procedure when repairing radiators. Aluminum is easier copper, and it provides better maintainability of aluminum radiators, without exposing them to excessive wear. It also helps aluminum radiators easier to transfer stress from repair and increases the service life of the aluminum radiator. In addition, the aluminum radiator serves as long as its copper "colleague" even after several repairs. However, copper is softer by nature, and this property is very useful when the need for repair arises.

External resistance

Internal heating easily damages copper tubes, according to which the coolant circulates. Aluminum tubes are more stable. When heated to high temperatures, aluminum will not crumble, not bend and does not crack. Most manufacturers produce aluminum radiators with tubes, sealed soft solder. Such a connection is more durable than the solid solder obtained in the brake used in copper radiators. Durable jokes add wear resistance radiator. The compound is firmly used faster due to possible defects when applying the solder itself. This is expressed as a white plaque in the inside, which over time provokes metal corrosion in places of docking pipes with top or lower radiator tank. Car vibration also harms radiators, and especially copper. At the same time, the low weight of aluminum radiators makes them less susceptible to this type of wear.

Leaky

Aluminum radiators seemingly more slopes to the emergence of leaks than their copper fellow. Sooner or later you will find one of these leaks near the laying or tank of the radiator. This causes the need for more frequent welding, which leads to more rapid wear. Copper radiators leaks occur not so easy. In the same way, the copper pipes have greatly proven themselves protected from leaks in Plumbing, in automotive radiators they also perfectly fulfill this role.

Resistance to corrosion

Copper is subject to corrosion more than aluminum. Especially in winter, copper radiators cannot adequately withstand corrosion, which destroys thin partitions between the tubes. Therefore, copper radiators are usually painted in black. If this is not done, then damage from corrosion will be faster, especially in wet conditions. Thin cooling ribs on aluminum radiators usually serve longer than their analogues on copper. Aluminum radiators are less suffering from corrosion, including electrolytic. At the same time, they will serve longer if they have a coating that protects them from oxidation.

The height of the shelf under the radiator is equal to 1mm, after cleaning received 1.2mm just frankly enough!

(Click on the picture to enlarge)

The radiator on the condenser cleaned 1mm. But this is not all, among the first three capacitors - the second is slightly higher, about 0.01mm

. Recommended 2-3mm!

It is still necessary to clean so that the socket and condensers do not interfere.

Technique and Hardware Experiment

To compare coolers with aluminum and copper basic, the stand of the next configuration was used:

* Master board: ASUS A7N8X-E DELUXE 1009 (NVIDIA NFORCE2 Ultra 400), Socket 462;

* Processor: AMD ATHLONXP 2500 + / 1833MHz, 512kb, 333MHz;

* Memory: 2 * 256MB DDR HYNIX HY5DU56822BT-D43 PC3200 400MHz (3-3-3-

;

* Hard disk: 160GB SATA-II Samsung HD160JJ, 7200RPM, 8MB;

* Video card: 64MB Sapphire Radeon 9500, 277/270 MHz, ETRONTECH 3.3NS;

* Drive: Matshita CD-RW CW-7586, 8X / 4X / 32X;

* Case: Chieftec DG-01W 310W (ATX-310-202) + Two 80 mm Maxxtron Coolers (~ 2650RPM, 12V).

For testing, Windows 2000 Pro SP4 operating system was used. To determine the processor temperature, the sensor built into the motherboard was used, and a PC Probe v2.21.08 utility was used to output its results in a readable form from the motherboard supplied kit. The resulting temperatures are shown in the figure, see below.

Testing was carried out in the following order:

1) Immediately after loading the system, the PC Probe v2.21.08 utility was removed on the processor temperature - this is the temperature of the processor at idle.

2) The CPU burn-in v1.01 utility was launched in Enable Error Checking mode and after one hour of operation of this test again measured the temperature of the processor Utility PC Probe v2.21.08 is the temperature of the heated processor.

Note: D9TB testing - room temprerate was 22c. After refinement S754-07B832A was 18.5c.

Reset the temperature by 5 degrees in a simple after the warm-up S754-07B832A carried out in 4 minutes, D9TB is almost 6.2 min.

Conclusion

The answer to the question in the recording header, I think received

. In the computer industry, miracles does not happen: what is better cool, it is cheaper. I do not want to "bury" aluminum coolers in any way, they so much served faithfully and to serve us and serve, but for high-frequency Athlon64 / Sempron processors the best choice will be "copper". For extreme situations, when all possible gigarets from the processor are squeezed, do not do without S754-07B832A (or RF).

Evaluation: Pros:

* Affordable price;

* High stock of overclocking;

* No noise, just rustle.

Minuses:

* Interfere with sockets and condensers on A7N8X-E Deluxe;

* None clamp to Socket 462.

Discuss in the conference:

All in one...

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