Heating and/or refrigeration apparatus of heat engine, has displaceable piston unit which is operatively connected between two working chambers, in order to change temperature effective displacement volumes in one of working chambers

摘要

The apparatus comprises a main working chamber (10) having heat exchangers (11,12), and an auxiliary working chamber (13) having heat exchangers (14,15). A displaceable piston unit (16) is operatively connected between the two working chambers, in order to change the temperature effective displacement volumes (17-20) in one of the working chambers. An independent claim is included for method for operating heating and/or refrigeration apparatus.