REFRIGERATION SYSTEM FOR HEAT EXCHANGERS SUCH AS USED IN ICE RINKS AND THE LIKE

摘要

REFRIGERATION SYSTEM FOR HEAT EXCHANGERS SUCH AS USED IN ICE RINKS AND THE LIKE Liquid refrigerant is pumped through the heat exchanger in the rink field or the like, on demand, and back to the evaporator. Any vapor is pumped through the compressor to an externally situated air cooled condenser and back to the evaporator thus maintaining the liquid phase. When the external condenser is in an ambient temperature, a predetermined amount below the temperature of the heat exchanger, the compressor shuts off and the liquid refrigerant is circulated by a liquid pump directly through the condenser and back to the evaporator to cool down the liquid refrigerant thus saving considerably on running costs inasmuch as the compressor is not used.