Thermosiphon chiller refrigerator for cold regions

摘要

In order to provide a thermo-siphon chiller refrigerator for use in cold districts which performs natural refrigerant-circulation refrigerating cycle and also can perform a forced refrigerant-circulation refrigerating cycle when outside air temperature is high by using an indoor heat exchanger, an outdoor heat exchanger, and a compressor, and combining them with refrigerant piping, the thermo-siphon chiller refrigerator for use in cold districts of the invention has a compressor(10) additionally installed to a natural refrigerant-circulation refrigerating system comprising an outdoor heat exchanger (12), an indoor heat exchanger(11) located at a position lower than that of the outer heat exchanger(12), and an expansion valve(18). When the refrigerating capacity of the natural refrigerant -circulation refrigerating system is not sufficient, the additional compressor(10) is operated to perform a forced refrigerant-circulation cycle i.e. a vapor compression refrigerating cycle. IMAGE