A compact active vapor compression cycle heat transfer device. The device of the invention includes a flexible diaphragm serving as the compressive member in a layered compressor. The compressor is stimulated by capacitive electrical action and drives the relatively small refrigerant charge for the device through a closed loop defined by the compressor, an evaporator and a condenser. The evaporator and condenser include microchannel heat exchange elements to respectively draw heat from an atmosphere on a cool side of the device and expel heat into an atmosphere on a hot side of the device. The overall structure and size of the device is similar to microelectronic packages, and it may be combined to operate with similar devices in useful arrays.
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