Household small solar air source composite heat pump system

Abstract

The invention relates to a household small solar air source composite heat pump system which is characterized in that an indoor heat exchanger and an outdoor heat exchanger in the system are parallel flow micro-channel heat exchangers, and each parallel flow micro-channel heat exchanger comprises a shell and a plurality of heat exchange modules which are located in the shell and arranged in parallel; the heat exchange module comprises a heat exchange shell, a plurality of rows of parallel flow micro-channels arranged in the heat exchange shell, fins arranged among the parallel flow micro-channels, and a heat / cold storage medium filled between the heat exchange shell and the parallel flow micro-channels; an air outlet module and an air inlet module are respectively arranged at the upper and lower ends of the shell; in the indoor heat exchanger, an air inlet module communicates with outdoor fresh air, and an air outlet module communicates with the indoor space; in the outdoor heat exchanger, the air inlet module and the air outlet module both communicate with outdoor air, and the surface of a shell of the outdoor heat exchanger is smooth and provided with a heat absorption coating. According to the system, the cold-heat conversion efficiency of the system is improved, the refrigerant charging amount in the system is reduced, the energy consumption of the system is reduced, and meanwhile the use cost of a user is reduced.

Description

technical field [0001] The invention relates to the technical field of solar air energy utilization, in particular to a household small solar air source compound heat pump system. Background technique [0002] In order to reduce carbon emissions from buildings and achieve the dual-carbon goal, the state encourages the use of renewable energy such as solar energy, wind energy, and zero-carbon energy nuclear energy to gradually replace fossil energy such as coal, oil, and natural gas for building cooling / heating. For the utilization of renewable energy, photovoltaic power generation, wind and solar power generation and other methods are usually used to convert it into electric energy for use. As a high-efficiency electricity-using technology, the air-source composite heat pump takes heat from the air and converts low-grade heat energy into high-grade heat energy, which can reduce the waste of electricity caused by direct use of electricity for cooling / heating. [0003] For ai...

AI Technical Summary

Problems solved by technology

The finned tube heat exchanger is easy to deposit dust and dirt, and it is inconvenient to clean, which can easily cause health problems such as respiratory diseases for indoor residents.

In addition, the traditional indoor unit is installed in a hanging way, which leads to high indoor temperature when heating in winter, while the temperature in the working and activity area is low, and the energy is not effectively and rationally used; and when defrosting in winter, the air The source heat pump system will absorb heat from the indoor air, causing the indoor temperature to drop, or the system needs to add an electric heating device, which will further reduce the energy efficiency of the system, affect the user experience and cause waste of power resources and increase the user's use cost , which is not conducive to the promotion and application of the above heat exchangers in the market

[0004] In order to solve the above technical problems and improve the comfort of heating, the air source heat pump hot water system came into being. It provides indoor cooling / heating in the form of heat radiation through floors, wall panels, etc., but this system needs to mix refrigerant and water. Secondary heat exchange reduces energy efficiency, complex equipment structure, high initial investment and operating costs, so it is not suitable for general residential buildings, and in summer cooling, condensation problems will affect the cooling of floors, wall panels, etc. In addition, it is easy to cause problems such as wall panels falling off and floor warping, which further increases the maintenance cost of users, which is not conducive to the promotion and application of the above-mentioned air source heat pump hot water system in the market.

[0005] Although in the existing household air-conditioning technology, some indoor units have used micro-channel heat exchangers, but they only replaced finned tube heat exchangers with micro-channel heat exchangers, which are similar in structure to traditional indoor units and have no difference from outdoor fresh air. Direct heat exchange only adjusts the indoor air through the ventilation mode, so that the indoor air quality is average and the energy consumption increases; at the same time, the existing floor-standing air conditioner indoor units are mostly used in large spaces, such as the living room, and the air outlet of the air conditioner is high, resulting in The temperature near the tuyere is the most suitable, and the temperature in other areas is average, the heat loss is large, and the user experience is poor

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