Compound evaporator coupled with multiple heat sources, and heat pump system thereof

By setting up a composite evaporator in the flue to recover flue gas waste heat and combine it with renewable energy, the problems of low heating efficiency and frost on the evaporator side of a single renewable energy source are solved, coupled heating with multiple heat sources is achieved, and the efficiency of the heat pump system is improved. Efficiency and stability, reduce flue gas temperature, solve environmental and development problems.

CN111237840AInactive Publication Date: 2020-06-05XI AN JIAOTONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2020-01-14
Publication Date
2020-06-05
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In the building field, single renewable energy heating has poor heating effect due to uneven spatial and temporal distribution and the system is easily affected by objective factors. Especially when the air source heat pump is running, frost on the evaporator side affects the heat transfer capacity and reduces the heat pump system. performance.

Method used

A composite evaporator and heat pump system coupled with multiple heat sources is used. A composite evaporator is set up in the flue to recover the waste heat of the flue gas. It is combined with renewable energy sources such as solar energy and geothermal energy to achieve complementary coupling of multiple heat sources for heating, and a flue gas is set on the outer shell. Air cooling fins prevent frost on the evaporator side.

Benefits of technology

It improves the energy utilization and usage efficiency of the heat pump system, effectively prevents frost on the evaporator side, achieves stable and efficient heating and cooling, reduces flue gas temperature, improves the heating efficiency of the boiler, and solves environmental and development problems.

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Abstract

The invention provides a compound evaporator coupled with multiple heat sources, and a heat pump system thereof. The use efficiency of a heat pump and the energy utilization rate are improved while the coupled use of the multiple heat sources is achieved; meanwhile, flue gas waste heat can be recycled, and purification is achieved; and the side of the evaporator is prevented from being frosted effectively. The compound evaporator comprises a shell, and flanges arranged at the two ends of the shell; the shell comprises an outer shell and an inner shell; a spiral refrigerant flow channel is arranged in a clearance between the outer shell and the inner shell; an inside cavity of the inner shell forms a coupled working medium flow channel, and the two ends of the inner shell are provided witha coupled working medium inlet and a coupled working medium outlet separately; the outer side of the outer shell is provided with a plurality of flue gas cooling fins, and a flue gas channel used forheat exchange is formed between the adjacent flue gas cooling fins; and the two ends of the outer shell are separately provided with a refrigerant inlet and a refrigerant outlet which communicate withthe refrigerant flow channel.
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