Apparatus for use as a heat pump

摘要

Apparatus (10') for use as a heat pump comprising: compression chamber means (40'); inlet means (30') for allowing gas to enter the compression chamber means; compression means (60') for compressing gas contained in the compression chamber means; heat exchanger means for receiving thermal energy from gas compressed by the compression means; expansion chamber means (124') for receiving gas after exposure to the heat exchange means; expansion means (120') for expanding gas received in the expansion chamber means; and exhaust means (100') for venting gas from the expansion chamber means after expansion thereof.