Cascade pulse tube method approaching Carnot refrigeration efficiency and its two stage verification

WANG Longyi; GAN Zhihua; WU Mei; SUN Xiao; SONG Yanru

doi:10.11949/j.issn.0438-1157.20161428

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Cascade pulse tube method approaching Carnot refrigeration efficiency and its two stage verification

更新时间：2025-11-26

- Cascade pulse tube method approaching Carnot refrigeration efficiency and its two stage verification
- CIESC Journal Issue S2, Pages: 269-274(2016)
- 作者机构：
  
  1. 浙江大学制冷与低温研究所,浙江,杭州,310027
  2. 浙江省制冷与低温技术重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161428
  CLC： B61+8
- Online First：30 December 2016，
  
  Published：30 December 2016
- 稿件说明：
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WANG Longyi, GAN Zhihua, WU Mei, et al. Cascade pulse tube method approaching Carnot refrigeration efficiency and its two stage verification[J]. CIESC Journal, 2016, (S2): 269-274.
DOI：

WANG Longyi, GAN Zhihua, WU Mei, et al. Cascade pulse tube method approaching Carnot refrigeration efficiency and its two stage verification[J]. CIESC Journal, 2016, (S2): 269-274. DOI： 10.11949/j.issn.0438-1157.20161428.

摘要

理论分析表明，通过多级级联脉管组成的新结构，其理论制冷效率有望达到卡诺效率。给出了这样一种具有传输管声功回收装置的级联型脉管制冷机，传输管能将主级制冷机脉管热端压力波领先质量流的相位扭转为质量流领先压力波，同时实现能量最大化的传输，用以驱动次级制冷机。实验结果表明，两级级联型脉管制冷机在233 K工作时，制冷效率比单级结构提高了33%。

Abstract

Theoretical analysis shows that

for the cascade pulse tube configuration

its ideal cooling efficiency could possibly approach Carnot efficiency.A cascade pulse tube cooler with a built-in transmission tube between stages for energy recovery is suggested in this paper

the transmission tube is able to reverse the phase relation between mass flow and pressure wave and to transfer the acoustic power as much as possible to drive a secondary cooler.Theoretical analysis of an ideal transmission tube is carried out

which shows that it is possible to recover the acoustic power from the former stage to drive a secondary stage by choosing proper size of the tube.To verify this idea

a two stage cascade pulse tube cooler was designed

fabricated and tested.Experimental results show that the efficiency can be improved by 33% when the machine works at 233 K.

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