Combined-driven metal hydride heat pump system and method

Abstract

The invention discloses a combined-driven metal hydride heat pump system. The heat pump system comprises a low-temperature reactor, a four-way control valve, a compressor, a high-temperature reactor and a valve, wherein a low-temperature reactor hydrogen interface III of the low-temperature reactor is connected with a four-way control valve hydrogen interface I of the four-way control valve, a four-way control valve hydrogen interface II of the four-way control valve is connected with a compressor hydrogen inlet of the compressor, a compressor hydrogen outlet of the compressor is connected with a four-way control valve hydrogen interface III of the four-way control valve, a four-way control valve hydrogen interface IV of the four-way control valve is connected with a high-temperature reactor hydrogen interface III of the high-temperature reactor, a high-temperature reactor hydrogen interface IV of the high-temperature reactor is connected with a low-temperature reactor hydrogen interface IV of the low-temperature reactor through the valve, and the low-temperature reactor and the high-temperature reactor contain different metal hydride respectively.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air-conditioning equipment, in particular to a combined-driven metal hydride heat pump system. Background technique [0002] Metal hydride is a new type of functional metal material, which can reversibly release and absorb a large amount of hydrogen at a certain temperature and pressure, accompanied by a huge enthalpy change, so it can be used to construct a metal hydride heat pump system to achieve low-temperature refrigeration and high-temperature heating and other functions, and has the characteristics of environmental friendliness and low-grade energy utilization. It is a hot spot for research and development in the world. [0003] In the prior art, metal hydride heat pumps can be divided into two types according to the driving mode: heat-driven metal hydride heat pump systems (MHHP) and compressor-driven metal hydride heat pump systems (CDMHHP). [0004] The heat-driven metal hydri...

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Problems solved by technology

[0007] On the contrary, the compressor-driven metal hydride heat pump system has a simpler structure and less irreversible loss, but its high-temperature end can only release heat, and the low-temperature end can only absorb heat, that is, it cannot realize the first type of heat pump cycle. The matching flexibility of the source is reduced. In addition, when the compression ratio increases, the hydrogen in the compressor driving system has a greater degree of superheat, which increases the irreversible loss in the heat transfer process.

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