An arrangement is disclosed for energy transformation under the utilization of an oscillating gas volume sustained by an energy supplying device. A gas compression creates an elevated temperature and a gas decompression creates a reduced temperature within the gas volume. One or more first valves are connected to the space, wherein the first valve is controllably actuatable to supply or extract thermal energy to or from the space during a compression stage. One or more second valve are further connected to the space, wherein the second valve is controllably actuatable to supply or extract thermal energy to or from the space during a decompression stage. A control unit is adapted to briefly permit actuation of the first valve and the second valve within mutually discrete time intervals.