Economizer refrigeration cycle space heating and cooling system and process

An economizer refrigeration cycle space heating/cooling system and process heating system which comprises:

• a compressor means,
• a load side heat exchanger and a heat source/sink heat exchanger connected thereto,
• an economizer circulator, an economizer control valve, an excess heat rejection economizer and a temperature stabilizing thermal mass storage filled with a coolant all connected in series with the heat source/sink heat exchanger which is disposed above the thermal mass storage to permit the coolant to be diverted by the economizer valve to flow from the heat source/sink heat exchanger through the excess heat rejection heat exchanger to the temperature stabilizing thermal mass storage and back to the suction side of the economizer circulator or selectively with the coolant bypassing the heat source/sink heat exchanger to the temperature stabilizing thermal mass storage, said temperature stabilizing thermal mass storage having a thermal capacitance greater than the sensible heat of the contained coolant at operating temperatures below ambient atmosphere temperature with the economizer circulator being operated to maintain the refrigeration cycle condensing temperature above the evaporating temperature, said heat source/sink heat exchanger economizer valve being adapted to maintain a substantially constant condensing temperature as the evaporating temperature or load changes and adapted to bypass the heat source/sink heat exchanger to permit reduction of the amount of heat in the thermal mass storage during times of refrigeration cycle in operation;
• and,
• an economizer temperature regulator valve adapted to control the amount of heat rejected from the excess heat rejection economizer by regulating the amount of coolant directed to the economizer.