Why did semiconductor refrigeration not replace compressor refrigeration?

1、 Cooling speed

For the cooling speed of the compressor, take the on-board refrigerator as an example. The German refrigeration technology adopted by Intel on-board refrigerator T20 has the best performance from 22 ℃ to 0 ℃ (empty box) in 13 minutes, with an average of about 15 minutes. (our laboratory has also done experiments. Under the condition of empty box, the fastest refrigeration time is 13 minutes, up to 0 ℃)

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Refrigeration performance is the core value of these components. In terms of refrigeration speed, it is obvious that semiconductors can not replace compressors.

2、 Cooling / heating effect

Semiconductor: heating up to 55 ℃, refrigeration up to 5 ℃; It is an indisputable fact that it has a wide range of application.

Compressor: the lowest refrigeration temperature can reach - 18 ℃. Like household refrigerator, it has the function of freezing fresh food.

3、 Quality

Semiconductor itself is a relatively simple structure with poor stability; In practical applications, it is generally used for refrigeration, including Xiaomi's latest mobile phone cooling fan, which also realizes cold heat conversion through semiconductors.

Thanks to its small size, there are many application scenarios.

However, it is also because of its small size and limited function; It's more than enough to dissipate heat for mobile phones, but it's too weak to be used as a refrigerator. At the same time, there will be some quality problems due to high load use.

4、 Other factors

In terms of refrigerator refrigeration, the performance of semiconductors is really unsatisfactory: slow refrigeration, low temperature, unstable performance, condensate in refrigeration space, etc. These problems do not need to be considered by the compressor. Naturally, consumers vote with their feet, which makes semiconductors fade out of people's sight.

Of course, this is only considered in the field of refrigerators. There are still many other application scenarios for semiconductors. For example, the volume of the compressor itself limits its ability to work in small and micro spaces, and the compressor also needs certain heat dissipation, which will also be limited.

It can only be said that although they have the same refrigeration function, the point where they can play the greatest value is not in the same place. If the best product of compressor is refrigerator, then semiconductor may be in the field of digital products.

As the saying goes, the ruler is good, and the inch is short; Making these hardware components play a greater role is the direction we should study deeply.