FIELD: heating equipment.
SUBSTANCE: invention relates to heating and hot water supply systems based on heat pumps using heat of low-temperature sources of natural or artificial origin. Compressor drive motor is located in heat-insulating casing containing additional sealed cavity connected by pipelines with heat exchanger of external ground circuit of HPU and evaporator of HPU so that closed loop is formed for circulation of antifreeze.
EFFECT: higher efficiency of HPU operation and higher reliability of HPU compressor operation.
1 cl, 1 dwg
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