CO2 heat pump system with heating/cooling balance and realization method thereof

Abstract

The invention relates to a CO2 heat pump system with heating / cooling balance and a realization method thereof, belonging to the filed of heat conversion and utilization. The system comprises a CO2 compressor with a heating / cooling energy balancing loop formed by connecting pipelines, a hot water heat exchanger, an expansion device, a cryogen distributor, an air heat exchanger, a cold water heat exchanger, a control system and a temperature sensor, wherein the cold water heat exchanger is connected in parallel with the air heat exchanger in the loop; and the control system is respectively connected with the temperature sensor and the cryogen distributor. The method comprises the following steps of: setting a permissible temperature range of the outlet temperature of water side of the cold water heat exchanger in advance; during the heat pump system working, detecting the outlet temperature of the water side of the cold water heat exchanger by the control system in real time; and controlling the flow direction and the flow rate of the cryogen according to the detected temperature and the preset permissible temperature range. The heat pump system can effectively balance the heating / cooing amount.

Description

technical field [0001] The invention belongs to the technical field of thermal energy conversion and utilization, and relates to a natural working fluid CO2 heat pump system. Background technique [0002] Today's world economy is developing rapidly, and the emissions of exhaust gases and greenhouse gases in countries around the world are increasing rapidly, which poses a serious threat to the living environment of people all over the world. Therefore, the vigorous development of renewable energy and clean energy has been highly valued by the governments of various countries. Governments have successively issued support and support policies for renewable energy and clean energy, which has greatly promoted the rapid development of the new energy industry. CO2 heat pumps are highly valued by governments and cooling and heating industries in developed countries due to their environmental friendliness, high efficiency, wide range of energy sources, and small size. Numerous resea...

AI Technical Summary

Problems solved by technology

Here, whether using an air heat exchanger or a cold water heat exchanger, the heating capacity obtained in the condenser through the operation of the heat pump depends on the energy of the air source or water source. When there is a problem with the energy source, there is no Conditioning capacity, that is, when the air (or cold water) flow and stability of the heat pump system loses its efficiency and heating and cooling capacity

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