GEOTHERMAL HEAT PUMP Russian patent published in 2024 - IPC F24T10/13 F25B30/02 

FIELD: heat power engineering.

SUBSTANCE: invention relates to heating and cooling plants using low-potential heat sources. Geothermal heat pump comprises a heat pump plant and geothermal probes. Heat pump plant comprises compressor, oil separator, heat exchanger-condenser, liquid separator. Compressor outlet is communicated with oil separator inlet, the first output of which is connected to the input of the heat exchanger-condenser, and the second output is connected to the input of the compressor. Compressor inlet is also communicated with liquid separator outlet. First output of heat exchanger-condenser is connected to input of circulation pump of heating system, and the second output of the heat exchanger-condenser is connected through the electromagnetic valve to the inputs of the uncontrolled expansion valves, which in turn are interconnected with the geothermal probes. Each uncontrolled expansion valve is interconnected with a geothermal probe. Outlets of geothermal probes are combined in a manifold, the outlet of which is connected to the inlet of the liquid separator through a check valve. Geothermal probes are made vertical from polymer pipes, difference between the temperature at the inlet of the heat exchanger-condenser and the temperature of freon condensation is not less than 20 °C, while the temperature at the inlet of the heat exchanger-condenser is not more than 95 °C. Heat pump plant is equipped with controller, which is made with possibility of electromagnetic valve disconnection when compressor is switched off, as well as with the possibility of providing temperature control at the inlet to the heat exchanger-condenser and providing control of the temperature difference at the inlet to the heat exchanger-condenser and the freon condensation temperature.

EFFECT: providing operability of the system with deep probes (up to 150 m), reducing the area required for using the device, reducing the amount of freon.

3 cl, 1 dwg