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1·Discusses the concrete performance, causing mechanism and solving method of the performance descent of centrifugal refrigerating unit.

探讨了离心式制冷机组性能下降的具体表现、产生机理和处理方法。

2·The operational characteristics of ice-storage series system are analysed based on the refrigerating unit and discharge priority control strategies.

对冰蓄冷串联系统在制冷机优先和释冷优先控制策略下的运行特性进行了分析。

3·For the indirect cooling method, glycol liquid as the secondary coolant is cooled in the refrigerating unit, pumped to the cooler in the house to cool the air.

乙二醇间接制冷方式是通过低温盐水机组将乙二醇降到一定温度，通过循环泵将乙二醇溶液供到需要制冷的气调库内换热器中，再由换热器对库内环境进行制冷。

4·The experimental result can to some extent be a guidance for further study of semiconductor refrigeration, and its application in the thermoelectric-refrigerating unit.

该研究结果对半导体制冷技术在小型制冷保温容器中的进一步研究和应用具有一定的指导意义。

5·If the air outlet is blocked by the goods or too close to the goods, it will not only affect the storage temperature of the goods, but also affect the normal operation of the refrigerating unit.

如果出风口前面被货物堵住或者离货物太近，不仅会影响货物的储运温度，还会影响制冷机组的正常工作。

6·The control execution unit set comprises a controllable heating valve set and a controllable refrigerating valve set and can realize controllable operation of heating and refrigerating;

所述控制执行单元组包括可控加热阀门组和可控制冷阀门组，可实现制冷和加热的可控运行；