Cooling capacity, generally speaking, the power of semiconductor refrigeration chips refers to power consumption, not cooling capacity. The cooling efficiency of current refrigeration chips is generally around 60%, which is about 0.6, which is very low (the heat pump of the compressor is at least 2.0). Take 100 watts as an example: a 100-watt refrigeration chip can generally generate about 60 watts of cooling capacity (about 60 joules of heat can be absorbed from the cold surface per second), while the heat generated by the hot surface is very large. In addition to the heat generated by the 100-watt power consumption, there is also about 60 watts of heat absorbed from the cold surface, a total of about 160 watts. The temperature difference between the cold and hot surfaces is quite large.
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