Building hot water and air conditioning system and working method thereof

Abstract

The invention discloses a building water heating and air conditioning system and a working method thereof, the system comprises a two-stage compression refrigeration / heat pump circulating system and a solar water heating system, a refrigerant heat exchange coil pipe is arranged in a water collecting tank, one path of a water outlet is communicated with a solar water heater, and the other path of the water outlet is connected with an indoor shower system and a winter indoor heating tail end. According to the method, water in the water collecting tank is mainly heated by the solar water heater to generate hot water, heating of the water is achieved through a high-pressure-stage refrigerant of a two-stage compression refrigeration / heat pump cycle in cloudy and rainy days and at night, the tail ends of an indoor air conditioner are separated in winter and summer, a single-stage refrigerant is used for evaporation, heat absorption and refrigeration in summer, and hot water serves as a heat source for heating in winter. By means of the advantages of the solar water heating system and the two-stage compression type refrigeration / heat pump circulating system, the indoor air conditioner and hot water supply requirements can be met in an all-weather mode, the purpose of saving energy can be achieved through solar energy, and the thermal comfort of the indoor air conditioner can be improved.

Description

technical field [0001] The invention belongs to the technical field of building hot water and air conditioning, and in particular relates to a building hot water and air conditioning system and its working method using solar energy and a combination of two-stage compression refrigeration / heat pump. Background technique [0002] At present, the most commonly used cooling equipment for residential buildings in my country is split air conditioning in summer, and in winter, the urban heating network is used in the north, while the south and most remote rural areas cannot be heated. The effect is still poor. At the same time, people's requirements for the comfort of the living environment are also constantly improving. The cooling end in summer and the heating end in winter should be distinguished. Hot water floor heating has become the mainstream choice for more and more buildings because of its comfort. Therefore, there is an urgent need for an air-conditioning system that can ...

AI Technical Summary

Problems solved by technology

[0002] At present, the most commonly used cooling equipment in residential buildings in my country in summer is split-type air-conditioning refrigeration. In winter, the north is heated by urban heating networks, while the south and most remote rural areas cannot provide heating. The use of split-type air-conditioning systems for heating consumes a lot of energy. The effect is not good

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