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A heat-driven double-effect elastothermal refrigeration cycle method and system

A technology of refrigeration cycle and refrigeration system, which is applied in the field of double-effect elastothermal refrigeration cycle, and can solve problems such as insufficient refrigeration efficiency

Active Publication Date: 2021-07-13
XI AN JIAOTONG UNIV
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  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a heat-driven double-effect elastothermal refrigeration cycle method and system to solve the problem of insufficient cooling efficiency of the heat-driven elastothermal refrigeration system in the prior art, which can achieve a more compact refrigeration effect

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  • A heat-driven double-effect elastothermal refrigeration cycle method and system
  • A heat-driven double-effect elastothermal refrigeration cycle method and system
  • A heat-driven double-effect elastothermal refrigeration cycle method and system

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] The shape memory alloy involved in the present invention (referred to as memory alloy) provides stress-strain characteristics when it changes from martensite to austenite under thermal drive, and the memory alloy changes from austenite to martensite phase under stress drive Variable exothermic properties. In the memory alloy, there are at least two crystal structures (phases), that is, a high temperature phase (austenite) and a low temperature phase (martensite) at zero stress.

[0034] see Figure 2-5 , the refrigeration system of the present invention includes four groups of memory alloys, which are respectively: high-temperature drive group memory alloys, medium-temperature drive group memory alloys, and high-temperature drive group memory alloy austenite termination temperature T af1 Lower than the high temperature heat source temperature, marten...

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Abstract

A heat-driven double-effect elastothermal refrigeration cycle method and system, two high-temperature drive group shape memory alloys with different phase transition temperatures absorb heat from high-temperature and medium-temperature heat sources respectively, and drive two low-temperature refrigeration group shape memory alloys Absorbs heat from the low-temperature refrigerated space to cool. Among them, the medium-temperature heat source is obtained by collecting the waste heat of the high-temperature heat source, so as to realize the cascade energy utilization of the heat source and continuous refrigeration. The refrigeration system includes four groups of memory alloys, which are: high-temperature drive group memory alloys, medium-temperature drive group memory alloys, and two low-temperature refrigeration group memory alloys. Shape memory alloys are used as heat-driven working fluids instead of motor-driven methods. Make better use of renewable energy and achieve more compact cooling than existing electric-driven elastothermal cooling solutions.

Description

technical field [0001] The invention relates to refrigeration cycle technology, in particular to a heat-driven double-effect elastothermal refrigeration cycle method and system. Background technique [0002] Vapor compression cycle is currently the most widely used refrigeration technology in the world, and is widely used in air conditioners, refrigerators, and freezers. Since the beginning of the 20th century, the core components such as compressors and heat exchangers in the vapor compression cycle have undergone several generations of development. At present, the cooling efficiency of the latest vapor compression refrigeration system is close to 40-45% of the theoretical efficiency of the Carnot cycle. Vapor compression refrigeration systems use a large number of refrigerants such as chlorofluorocarbons and hydrofluorocarbons, which are not conducive to environmental climate change. The greenhouse gas effect of these refrigerants is more than 1,000 times that of carbon di...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B23/00F25B27/00F25B27/02F25B41/20F25B49/00
CPCF25B23/00F25B27/00F25B27/002F25B27/02F25B49/00F25B41/20Y02A30/274
Inventor 钱苏昕许世杰
Owner XI AN JIAOTONG UNIV