Combined air conditioning system with solar driven refrigerator and carbon dioxide heat pump

Abstract

The invention discloses a combined air conditioning system with a solar driven refrigerator and a carbon dioxide heat pump in the technical field of solar utilization and air conditioning, which comprises a heat collection system, a heat accumulation system, a domestic hot water supply system, a heat pump air conditioning system and an air conditioning indoor end system, wherein the heat collection system is sequentially connected with the heat accumulation system and the domestic hot water supply system in series; and the heat accumulation system is sequentially connected with the heat pump air conditioning system and the air conditioning indoor end system in series. The combined air conditioning system can realize the comprehensive needs of a building in year-round refrigeration, heating and domestic hot water and balance overall refrigeration and heating capability, has relatively more perfect entire performance and higher performance indexes, adopts environmentally-friendly working mediums, utilizes renewable energy sources and realizes reduction in dependence on primary energy.

Description

technical field [0001] The invention relates to a system in the technical field of solar energy utilization and air conditioning, in particular to a combined air conditioning system of a solar-driven refrigerator and a carbon dioxide heat pump. Background technique [0002] The global shortage of fossil energy and the intensification of the greenhouse effect have brought many negative effects to the environment and social development. The urgent need for high-efficiency energy-saving technologies has promoted the rapid development of solar air-conditioning and air-source heat pump application technologies. Among them, due to the use of natural working fluid, carbon dioxide heat pump has great advantages in environmental protection compared with conventional freon working fluid, and has received more and more attention. In addition, entering the 21st century, building energy consumption accounts for an increasing proportion of national energy consumption, and most of the ener...

AI Technical Summary

Problems solved by technology

However, this patent does not carry out a more targeted design for carbon dioxide working fluid

[0005] The Chinese patent authorization announcement number is: CN2529115Y, and the utility model name is "solar heat pump cooling and heating air conditioner". The air source heat pump is used as the main means of refrigeration, and the heat of the sun is not converted into cold energy, and the air source heat pump is assisted in refrigeration.

This kind of cycle puts forward new requirements both for the design of the compressor and the circulating working fluid. It is usually a compound binary or ternary working fluid. The natural working fluid of carbon dioxide is not within the range of suitable working fluids for this cycle, and there is no related patent or Reported VCCSC cycle uses solar energy as heat source for auxiliary refrigeration

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