Efficiency of using heat pumps in a geothermal heat supply system

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Possible technical solutions in the systems of self-contained heat supply are considered. Thret technological directions are analyzed: traditional one with hot water boilers, a combined block installation containing a steam boiler and an absorption lithium-bromide heat pump, and vapor- compression heat pump equipment with electrical drive. Energy and cost efficiency of use of low- temperature energy-saving heat pump technologies in the systems of geothermal heat supply в shown. Scheme solutions on vapor-compression heat pumps allow to increase their competitiventA at the market for heat energy.

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L. A. Ogurechnikov

Institute of Thermal Physics. S.S. Kutateladze SB RAS

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Email: info@eco-vector.com

Doctor of Engineering, Sciences

Russian Federation

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2. Rice. Fig. 1. Principal technological schemes of heat generation for geothermal heat supply systems: a - hot water boiler plant; b - combined block; c - vapor compression heat pump; 1 - geothermal well; 2 - submersible well pump; 3, 7, 14, 15, 23, 25, 28 - circulation, pumps; 4 - hot water boiler; 5, 17, 2 4 - consumers of heating systems; 6 - steam boiler; 8 - boiler; 9 - generator; 10 - capacitor; 11 - solution heat exchanger; 12 - absorber; 13 - ABTN evaporator; 16, 31 - control valves; 18. 32 - input, respectively, to the water supply system and the reinjection well; 19 - electric motor; 20 - compressor; 21 - capacitor; 22 - storage tank in the HPP heating system; 26 - liquid cooler; 27 - storage tank in a separate hot water supply system; 29 - consumers of hot water supply; 30 — HPU evaporator

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3. Rice. 2. Thermodynamic cycle of a vapor-compression heat pump in the T, s-diagram: Q.., the amount of heat, respectively, of a low-potential geothermal source; compression in the compressor, sent to the heating and hot water supply system

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Copyright (c) 2022 Ogurechnikov L.A.

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