半导体致冷器可以用电能直接实现能量转移.它体积小,无需冷剂也无机械转动部分,在产冷量20W以下的场合尤较其它致冷手段有明显的优越性.半导体冷阱配用市售的温控仪,一般温控精度在±0.5℃左右.我们在研制“空气中氚监测仪刻度器”中,采用由测温元件反馈讯号连续控制直流电源的方式,使内装鼓泡器的半导体冷阱被恒温 The semiconductor cooler can realize the energy transfer directly by the electric energy.It has the advantages of small size, no need of refrigerant and no mechanical rotating part, and has obvious superiority to other refrigerating devices under the capacity of 20W, With a commercially available temperature controller, the general temperature control accuracy of ± 0.5 ℃. We are in the development of “air tritium monitor meter”, the temperature feedback signal by the continuous control of the DC power supply, so that the interior The bubbler’s semiconductor cold trap is thermostatted