A heat-driven elastothermal heat pump cycle method and system

Abstract

A heat-driven elastothermal heat pump circulation method and system, the system includes a memory alloy of a medium-temperature driving group, a memory alloy of a high-temperature heat pump group, and three heat sources of a medium-temperature heat source, a high-temperature heat sink, and a normal-temperature heat sink; Tensile finish temperature T af2 lower than the temperature T of the medium temperature heat source g , but T af2 Higher than the austenite termination temperature T of memory alloys in the medium temperature drive group af1 , the martensite termination temperature T of the memory alloy in the medium temperature drive group mf1 The temperature T above the normal temperature heat sink c ; The memory alloy of the medium-temperature driving group and the memory alloy of the high-temperature heat pump group are connected through mechanical coupling components. Moderate temperature driving group shape memory alloy from a temperature T g The low-grade medium-temperature heat source absorbs heat to the temperature T c The normal temperature heat sink provides the driving force for the shape memory alloy of the heat pump group, so that it can change the temperature to T g The heat released from the medium temperature heat source to a temperature T h The high-temperature heat sink realizes the improvement of low-grade heat energy.

Description

technical field [0001] The invention belongs to the field of thermal energy treatment, and in particular relates to a heat-driven elastothermal heat pump cycle method and system. Background technique [0002] Energy shortage and environmental pollution have become a problem that cannot be ignored in the development process of our country. The energy consumption in my country's industrial field accounts for about 70% of the total energy consumption in the country. In addition to factors such as immature production technology, unreasonable production capacity structure, and extensive development, the utilization rate of industrial waste heat is low, and energy has not been fully and reasonably utilized. Utilization is an important reason for high energy consumption. According to the survey, the total waste heat resources of various industries in my country account for about 17% to 67% of the total fuel consumption, of which the recyclable waste heat accounts for about 60% of t...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a heat-driven elastothermal heat pump cycle method and system to solve the problem of low efficiency of industrial waste heat in the prior art through increasing the temperature through efficiency enhancement, which can make better use of low-grade heat energy

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