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Active-regeneration type thermoelastic refrigeration system

A technology of active regenerative and cooling systems, applied in heating and cooling combinations, refrigerators, refrigeration components, etc., can solve the problem of single-stage elastic-thermal refrigeration cycles and systems that are difficult to meet large system temperature differences, cannot be guaranteed, large system temperature differences, etc. question

Active Publication Date: 2016-10-26
XI AN JIAOTONG UNIV
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Problems solved by technology

Another system design scheme based on a single-stage refrigeration cycle disclosed in US Patent No. 20120273158A1 and Chinese Patent CN102778075A, although a regenerator is mentioned, is only based on a single-stage cycle design in the system flow design and implementation cases. There is no guarantee that greater system temperature differences can be achieved
All in all, it is still difficult for single-stage elastothermal refrigeration cycle and system to meet the large system temperature difference required by this technology in practical air conditioners, refrigerators, etc. circular design

Method used

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Embodiment Construction

[0050] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0051] The invention is aimed at the solid-state refrigeration technology using shape memory alloy (short for memory alloy) martensitic phase transformation refrigeration and heating. In shape memory alloys, there are at least two crystal structures (phases), most typically a high temperature phase (austenite) and a low temperature phase (martensite). Such as Figure 1A As shown, when the high temperature phase is stress-free, when the material temperature is higher than A f When the stable component, the content of martensitic phase is the lowest at this time; the temperature of the material is lowered to M s , the austenite in the high-temperature phase begins to transform into martensite in the low-temperature phase, and releases latent heat at the same time; when the material temperature is lower than M f , martensite becomes a stable comp...

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Abstract

The invention discloses an active-regeneration type thermoelastic refrigeration system. The active-regeneration type thermoelastic refrigeration system comprises a high-temperature side heat exchanger, a low-temperature side heat exchanger, at least two regenerators made of thermoelastic refrigeration materials, and a heat exchange fluid network used for discharging heat from the low-temperature side to the high-temperature side.

Description

field of invention [0001] The invention relates to the application field of refrigeration and air conditioning, in particular to a solid-state refrigeration cycle system using the elastothermal effect of memory alloys. 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 refrigeration efficiency of the best vapor compression refrigeration system has been close to 40-45% of the theoretical efficiency of the Carnot cycle. Vapor compression refrigeration systems use a large number of refrigerants such as HCFCs and HFCs, which are harmful to the environment and climate change. The greenhouse gas effects of these refrigerants are mostly CO 2 M...

Claims

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Application Information

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IPC IPC(8): F25B29/00F25B41/04F25B41/06F25B40/06F25B41/20F25B41/30
CPCF25B29/00F25B40/06F25B2600/25F25B41/30F25B41/20
Inventor 钱苏昕鱼剑琳晏刚
Owner XI AN JIAOTONG UNIV
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