Solar phase-change heat-storage heat source tower heat pump system

Abstract

The invention discloses a solar phase-change heat-storage heat source tower heat pump system (see attached drawing for schematic diagram). The system mainly comprises an improved closed heat source tower (1), a solution expansion tank (2), a phase-change heat storage tank (3), a constant pressure device (4), an ethylene glycol circulating pump (5), a solar heat-collecting panel (6), a load pump (7), a heat source tower water pump (8), a heat source tower heat pump set (9) and an air conditioner end (10), which are communicated through water pipes, and valves are installed for regulation; and the phase-change heat storage tank (3) is in series connected with the improved closed heat source tower (1). When the system is started, the solar heat collector absorbs solar energy, and the energy is stored in the phase-change heat storage tank; the antifreezing solution first enters the heat source tower to be in indirect heat exchange with air (the spray-antifrosting system is stared when necessary), then enters the solar phase-change heat storage tank to be continued to conduct heat exchange, and finally enters the heat pump set for heating after the temperature further increases; and the system can solve the problem of low COP value of the heat pump set in winter in the improved closed heat source tower heat pump system, reduce the operating energy consumption and the operating cost of the heat pump set, and is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a winter heating technology for a solar energy phase change heat storage auxiliary heat source tower heat pump system. Background technique [0002] Energy conservation and comprehensive utilization of resources is a long-term strategic policy for my country's economic and social development. For air-conditioning systems, seeking cheap renewable heat and cold sources is a key measure to save energy and reduce consumption. The heat source tower is a new type of heat and mass exchange equipment. It uses cheap air energy. In the heat pump system, one tower is used for two purposes. It provides cold source in summer and heat source in winter. There are three typical structures (open type, ordinary closed type and Improved closed). The open structure has high heat exchange efficiency, simple structure, and low cost, but the working medium (cooling water in summer and antifreeze solution in winter) drifts a lot, and the antifreeze ...

AI Technical Summary

Problems solved by technology

This technology is suitable for use in southern my country and can replace air-source heat pumps, thus effectively solving the problem of frosting in southern regions when using air-source heat pumps in winter

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