Phase-change energy storage type solar composite energy source cold water, warm water and hot water combined supply system

Abstract

The invention relates to a phase-change energy storage type solar composite energy source cold water, warm water and hot water combined supply system, which comprises a phase change heat accumulator, a pump station, a solar heat concentrator, an auxiliary heater, a hot water terminal, an intermediate heat exchanger and a heat pump refrigerating subsystem, wherein the solar heat concentrator is connected with the phase change heat accumulator; the phase change heat accumulator is respectively connected with the solar heat concentrator, the auxiliary heater, the hot water terminal and the intermediate heat exchanger through the pump station; the hot water terminal is connected with the auxiliary heater; and the intermediate heat exchanger is connected with the heat pump refrigerating subsystem. The phase-change energy storage type solar composite energy source cold water, warm water and hot water combined supply system disclosed by the invention takes a phase change energy accumulator as an energy source composition and supply center, solar energy, the heat pump refrigerating system and auxiliary energy sources, such as electric heat or fuel gas and the like are independent relatively, and comfortableness of human settlement environment is achieved by using fewer system equipment investment, concise operation control and minimum energy source consumption.

Description

technical field [0001] The invention relates to a triple supply system of cold, warm and heat, in particular to a triple supply system of solar energy, phase change energy storage, heat pump refrigeration system and auxiliary compound energy to realize the triple supply of cold, warm and hot water. Background technique [0002] Traditionally, a set of air-conditioning systems, a set of boiler heating systems, and independent water heaters are separately set up in the commercial and civil areas for refrigeration, heating, and hot water to meet user needs. Due to the large initial investment, large equipment footprint, and system maintenance Problems such as complexity, high energy consumption, large resource consumption, and unfavorable environmental protection have fallen behind the needs of the development of the times. [0003] At present, solar energy is mostly used for hot water supply due to its low heat density, and due to the instability of solar energy, it still need...

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Problems solved by technology

[0002] Traditionally, a set of air-conditioning systems, a set of boiler heating systems, and independent water heaters are separately set up in the commercial and civil areas for refrigeration, heating, and hot water to meet user needs. Due to the large initial investment, large equipment footprint, and system maintenance Issues such as complexity, high energy consumption, large resource consumption, and unfavorable environmental protection have fallen behind the needs of the development of the times

[0003] At present, solar energy is mostly used for hot water supply due to its low heat density, and due to the instability of solar energy, it still needs to be supplemented by other energy sources; due to the limitation of working conditions, the heating of refrigeration and air-conditioning systems in winter is insufficient, so it is difficult to solve the problem in the northern region. Heating problem; a set of independent heating system has a lot of idle waste due to its short service life, and the maintenance cost is high

[0004] The combination of solar energy and heat pump refrigeration system is of great significance in the composite energy system. Solar energy is clean energy and can be supplied free of charge for a long time. The heat pump refrigeration system is an energy-efficient utilization system. Unit energy consumption can obtain multiple energy sources. Heat pumps can solve the problem of insufficient solar energy heating. Solar energy can improve the operating efficiency of heat pumps, but both solar energy and heat pumps have the problem of lower operating efficiency as the outdoor temperature drops, that is, the combination of solar energy and heat pumps can meet the cooling, heating and hot water needs of the family in most of the time , but in colder areas in winter, it is still unable to meet the needs of family heating

[0005] Auxiliary composite energy such as solar energy and electric heating or gas can solve the problem of hot water and heating, but it cannot solve the problem of cooling. The energy is used once, and the utilization efficiency is low. The unit energy consumption can only obtain double the energy at most.

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