Cryogenic alternating flow heat transfer property testing platform and method

A technology of alternating flow and heat transfer performance, applied in the field of cryogenic engineering, which can solve the problems of limited refrigeration capacity and few research systems.

Pending Publication Date: 2019-03-19
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nsofor et al. conducted experimental research on the heat transfer characteristics of the alternating flow in the heat exchanger of the thermoacoustic refrigerator in the literature [2]. However, due to the limitation of refrigeration capacity, the device is only suitable for ...

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  • Cryogenic alternating flow heat transfer property testing platform and method

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The specific embodiments in this specification are only for explaining the present invention, but not for limiting the present invention.

[0033] refer to figure 1 As shown, the embodiment of the present invention provides a deep-low temperature alternating flow heat transfer flow performance test platform for measuring the heat transfer characteristics of the device 10 to be tested. The test platform includes: drive unit, temperature control unit, test unit and phase modulation unit.

[0034] The driving unit includes a pressure wave generator 1 , a water-cooled heat exchanger 2 , a tee 3 and a regulating valve 4 connected in sequence. The main body of the pressure wave generator 1 is a linear compressor with a frequency converter, whic...

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Abstract

The invention discloses a cryogenic alternating flow heat transfer property testing platform and a method and relates to the field of cryogenic engineering. The testing platform comprises a driving unit, a temperature control unit, a testing unit and a phase modulating unit. By providing a temperature sensor, a pressure sensor and a dynamic pressure sensor to separately measure the temperature andpressure signals in a to-be-tested apparatus in real time under a condition close to the actual operating working condition, basic heat exchange data of the to-be-tested apparatus under different parameters can be acquired, so that design and optimization of the to-be-tested apparatus can be guided effectively.

Description

technical field [0001] The invention relates to the field of low temperature engineering, in particular to a test platform and method for deep low temperature alternating flow heat transfer performance. Background technique [0002] The rapid development of space technology and superconducting devices has greatly increased the demand for cryogenic refrigerators. Traditional Stirling refrigerators and G-M refrigerators have been widely used in space infrared imaging and ground cryogenic vacuum pump systems respectively. Thermoacoustic refrigerators have become a research direction for scholars because of their environmental friendliness. In recent years, in order to improve the operating life and reliability of the refrigerator, pulse tube refrigerators with no moving parts at the cold end have attracted more and more attention. The above refrigerators are collectively referred to as regenerative refrigerators. [0003] In regenerative refrigerators, the working medium is ...

Claims

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Application Information

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IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 黄迦乐金滔魏健健
Owner ZHEJIANG UNIV
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