半导体制冷效率及空间冷量传递特性试验研究

Experimental Research on the efficiency of Semiconductor Refrigeration and Cold Transfer Characteristics of the Space

半导体制冷效率的大小取决于热电堆冷热端的温差 ,而强化热端的散热与强化冷端的冷量散发有利于降低热电堆冷热端的温差 ,从而提高半导体的制冷效率 .本文探讨了由半导体冷端提供冷量进行制冷的空间温度在自然对流和强制对流状态下随时间变化的规律 .结果表明强制对流有助于冷量的传递和制冷效率的提高 .

The efficiency of semiconductor refrigeration depends on the temperature difference between the cold and hot sides of a thermopile. This temperature difference can be remarkably reduced both by the heat loss of the enhanced hot side and by the cold dissipation of the enhanced cold side,thus leading to the rise of semiconductor refrigeration efficiency.The law of change in temperature with the passing of time of a space, which is cooled by the refrigeration provided by the cold side of a semiconductor, is tested under the conditions of the natural and forced convection. The experimental results show that forced convction is of benefit to the cold transfer and to the rise of refrigeration rate.