Solar assisted carbon dioxide heat pump united air-conditioning system

Abstract

The invention relates to a solar assisted carbon dioxide heat pump united air-conditioning system in the field of solar utilization and air-conditioning technologies. The solar assisted carbon dioxide heat pump united air-conditioning system comprises a heat collecting system, a heat storage system, a daily hot water supply system, a heat pump air-conditioning system and an air-conditioning indoor end system, wherein the heat collecting system is sequentially connected in series with the heat storage system and the daily hot water supply system; and the heat storage system is sequentially connected in series with the heat pump air-conditioning system and the air-conditioning indoor end system. By the solar assisted carbon dioxide heat pump united air-conditioning system provided by the invention, the annual refrigeration, heating and daily hot water comprehensive requirements of buildings can be realized; the integral refrigeration and heating capabilities of the system can be equalized; the performance of the complete machine is perfect; the air-conditioning system has high performance index; a working medium is green and environment friendly; and renewable energy is utilized, thereby reducing the dependence of the integral system 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 solar energy assisted carbon dioxide heat pump combined air conditioning system. 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 energy consumption ...

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 patent uses air source heat pump as the main means of cooling, and does not convert the heat of solar energy into cold energy, and assists air source heat pump refrigeration.

However, this patented invention still has several shortcomings compared to the expected product mentioned above - the combined air-conditioning system using solar energy-assisted carbon dioxide heat pumps: First, it has a single purpose, which is only a cooling system, and does not consider the impact on buildings throughout the year. Satisfaction of comprehensive needs; second, the compression refrigeration part does not consider many modifications related to the characteristics of carbon dioxide, for example: the condenser part does not indicate that it is transformed into a gas cooler; third, the absorption refrigeration device and the compression refrigeration device They are two separate devices. Although they are connected by pipelines, the invention patent description or illustrations do not consider the combination of them in the actual product.

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