制冷器件制冷特点:
   1．可使用常规直流电源；
   2．不使用制冷剂，不污染环境；
   3．体积小、重量轻，可大大节约建筑面积；
   4．可通过改变电流方向达到冷却和加热两种不同的目的；
   5．冷却速度快，其冷却速度可通过调节工作电源来控制，便于控制；
   6．具有发电能力：若在致冷组件两面建立温差，则可产生直流电；
   7．无噪音、无磨损、运行可靠、维护方便。

Refrigeration characteristics:
   1. May use conventional DC power;
   2. Not to use refrigerants that do not pollute the environment;
   3. Both small and light and can significantly save construction area;
   4. To change the direction of electric current through both cooling and heating Different purposes;
   5. Cooling fast, its speed through conditioning cooling work Power to control and facilitate control;
   6. A generating capacity: If the two components in a temperature refrigeration Worse, they may produce direct current;
   7. No noise, no wear and tear and operational reliability, ease of maintenance.