半导体致冷也称电子冷冻,是六十年代发展起来的一种新型冷源。目前,国内运营的客车,一般均无空调。在炎夏,车箱内(尤其是包房内)温度高达四十度左右,仅用电风扇吹,事实上达不到防暑降温目的。在毛主席三项重要指示推动下,北京铁路局北京车辆段和铁道部建厂局科研所合作,大胆地把半导体致冷这一新技术应用在客车上,进行防暑降温。通过模拟试验和正式装车运行试验证明,在客车上采用半导体致冷进行防暑降温是可行的,效果是良好的。在客车上采用 Semiconductor cooling, also known as electronic freezing, is a new type of cold source developed in the 1960s. At present, domestic buses are generally air-conditioned. In the summer, the car (especially private room) temperature up to about forty degrees, only the fan blowing, in fact, reach the purpose of sunstroke cooling. Driven by the three important instructions of Chairman Mao, the Beijing Railway Depot, Beijing Depot and the Scientific Research Institute of the Ministry of Railways Construction Factory boldly applied the new technology of semiconductor refrigeration to the passenger cars for sunstroke prevention. Through the simulation test and the formal loading operation test, it is proved that it is feasible to use the semiconductor cooling on the passenger car to prevent summer cooling and the effect is good. Used in the bus