CO2双缸滚动活塞膨胀机的实验研究

Zhang Meilan; Ma Yitai; Li Minxia

doi:10.3969/j.issn.0253-4339.2012.03.005

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CO2双缸滚动活塞膨胀机的实验研究

更新时间：2024-07-18

- CO2双缸滚动活塞膨胀机的实验研究
- Journal of Refrigeration Vol. 33, Issue 3, (2012)
- 作者机构：
  
  中低温热能高效利用教育部重点实验室天津大学热能工程系
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2012.03.005
  CLC：
- Published：2012
- 稿件说明：
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Zhang Meilan, Ma Yitai, Li Minxia. [J]. Journal of Refrigeration, 2012, 33(3).
DOI：

Zhang Meilan, Ma Yitai, Li Minxia. [J]. Journal of Refrigeration, 2012, 33(3). DOI： 10.3969/j.issn.0253-4339.2012.03.005.

摘要

通过实验研究分析了CO2双缸滚动活塞膨胀机的中间通道对其效率及膨胀比的影响。对CO2双缸滚动活塞膨胀机的中间通道进行了改进，同时减小了中间通道的长度和直径，并进行了相关实验，结果表明：膨胀机的入口最优工况为26℃，6.5MPa，回收功率最高达到200W，效率最高达到42.3%。在各种实验工况下，测得的膨胀比已经达到了2.2左右，已经比较接近CO2双缸滚动活塞膨胀机的设计膨胀比2.5，但仍有改进的空间。

Abstract

The influence of the intermediate channel of CO2 two-cylinder rolling piston expander on efficiency and expansion ratio is investigated in this paper. The channel is improved by decreasing its diameter and length at the same time. The experiment of the improved expander is carried out in this paper. 26℃

6.5MPa is the optimum work condition of the test. The recovered power of the expander is up to 200W and the efficiency is 42.3%. The expander ratio has already gone to 2.2

which is very close to the theoretical ratio 2.5. However

there is still the room for improvement of the expander.

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