Pure aluminum, aluminum alloy copper, who of the three dissipates heat faster!?

That's right. In addition, I think that if there is a fan, cooling water, etc., to speed up the heat dissipation, copper is the best; And if not, plus the ventilation is not very good, it is better to use aluminum. View the original post

Copper has a large heat capacity, fast heat absorption, and low thermal resistance, but the heat dissipation performance is not the best. Aluminum is the opposite of copper, but the density is one-fourth of copper, generally speaking, copper in contact with the heat source, aluminum for heat dissipation, heating pipes if necessary is the most reasonable solution, in addition, 6063 in aluminum alloy has the best thermal performance, pure aluminum material is too soft, not as good as alloy. There are too many grades of aluminum alloy, some are stronger than pure aluminum, and some are worse than pure aluminum, but in terms of mechanical properties and thermal properties, aluminum alloys are slightly better.

I am a professional in thermal design, and I do OEM for Huawei every day, and I am tired to death. View the original post

This comparison is not good. Because there are many types of copper. Specifically, the thermal conductivity of copper should be the best, with a thermal conductivity of about 380 and a general brass thermal conductivity of only a little more than 100, which is not as good as duralumin.

At the same time, it is one thing to export the heat, but also to dissipate the heat, which has many means, air cooling, water cooling, and so on. Of course, first of all, the thermal conductivity of heat dissipation is required to be large, and the heat must be able to be quickly exported. View the original post

Of course, the heat dissipation effect of copper is better, and it is even better if it is sunflower! Contemptible people have done computer cooling systems before View the original post".

Generally speaking, materials with good electrical properties have good heat dissipation performance. Materials with high electrical resistance also have high thermal resistance. View the original post

Copper dissipates heat faster than aluminum. In terms of thermal conductivity, copper is aluminum, and thermal conductivity is copper 386w mk aluminum 198w mk; Obviously, copper is much better than aluminum. However, copper ** itself is relatively high and soft, and cannot be manufactured by casting process, but only by "drawing" or machining.

Due to manufacturing difficulties, most copper heat sinks on the market are not pure copper, but bottom copper or copper plating, but the mixing of the two metals will reduce the thermal conductivity and cause uneven thermal conductivity. The heat sink of pure copper is also defective, easy to oxidize and blacken, and the surface is not smooth.

Copper dissipates heat well.

Because of the heat of Baidu copper.

The conductivity of Zhi is 401 (W mK) and the thermal conductivity of aluminum is 237 (W mk). Copper is a purple-red lustrous version of the metal, which has good ductility and good thermal and electrical conductivity. Aluminum also has good electrical and thermal conductivity, but also has high reflectivity and oxidation resistance, light from the heat dissipation effect, copper is slightly better.

Pure copper is air-cooled and suitable.

The higher temperature of the device heat dissipation, uniform heat conduction, and the larger the temperature difference with the room temperature, the more obvious the effect is reflected, the disadvantage is that the quality of pure copper is higher.

A: Soft is easy to deform and oxidize, and the cost is expensive. Aluminum is used for heat dissipation in a large area and is inexpensive. If you save space and dissipate heat, use copper, if you don't consider the size of the space, you only need to use aluminum if the heat dissipation is up to standard, this is your own decision.

Generally speaking, materials with good electrical properties have good heat dissipation performance. Materials with high electrical resistance also have high thermal resistance.

Some people think that aluminum heat dissipation is faster than copper, because aluminum has a low density and less energy storage, so in the same case, special aluminum is a little cooler, but !! The density of copper is more than 3 times higher than that of aluminum, and the real number is normal when it is cool, and the heat energy of copper is several times that of aluminum! In the case of the same volume, thickness and shape, cooling fan, everything is a floating cloud, and the level can only be determined by the thermal conductivity, which is recognized by all mankind and the world!

I'd also like to ask those who say that aluminum dissipates heat quickly, what is the basis for their words? Which internationally recognized authorities have reached such conclusions? What experiments have been done to support this conclusion!

Copper dissipates heat faster. Because the thermal conductivity of copper is 401 (W mk) and the thermal conductivity of aluminum is 237 (W mk).

Copper is a purplish-red luster metal with a density of cubic centimeters. Melting point, boiling point 2567. It has good ductility. Good thermal and electrical conductivity.

Aluminum is widely used for its lightness, good electrical and thermal conductivity, high reflectivity, and resistance to oxidation. The aluminum used for daily utensils is usually called "steel fine" or "steel grade". al coefficient of thermal expansion at (room temperature)25 or.

The thermal conductivity of alloys is worse than that of pure metals.

Pure metals have good thermal conductivity, of which silver (about the best), copper (about, aluminum (about second.

The thermal conductivity coefficient in parentheses is the fastest among copper, iron, aluminum and steel.

1. Choose copper rods, aluminum rods and copper rods of equal diameter and length.

2. The surface is wrapped with thermal insulation material, so that the side is almost insulated.

3. Thermocouples are used at one end of the three copper rods to measure the temperature.

4. The other end can be heated by an alcohol lamp at the same time.

5. Record the change of thermocouple temperature with time.

One end can also be placed in boiling water to ensure that the temperature of the heat source is constant.

In addition to the thermal conductivity, the heat transfer rate is also related to the density and specific heat of the material.

Pure aluminum, aluminum alloy copper, who of the three dissipates heat faster!?

Copper dissipates heat well. Because the thermal conductivity of copper is 401 (w mk) and the thermal conductivity of aluminum is 237 (w mk). Copper is a purple-red light wheel group of metals, it has good ductility, thermal and electrical conductivity.

Aluminum also has good conductive spike and thermal conductivity, but also has high reflectivity and oxidation resistance, and copper is slightly better than the heat dissipation effect.

The thermal conductivity of the alloy is worse than that of pure metal, and the thermal conductivity of pure metal is good, of which silver (about the best, copper (about, aluminum (about second, the number of thermal conductivity in parentheses, so copper has the fastest thermal conductivity in copper, iron, aluminum steel.

1. Choose imitation fiber copper rods, aluminum rods and copper rods of equal diameter and length.

2. The surface is wrapped with thermal insulation material, so that the side is almost insulated.

3. Thermocouples are used at one end of the three copper rods to measure the temperature.

4. The other end can be heated by an alcohol lamp at the same time.

5. Record the change of thermocouple temperature with time.

One end can also be placed in boiling water to ensure that the temperature of the heat source is constant.

In addition to the thermal conductivity, the heat transfer rate is also related to the imitation density and specific heat of the material.