Development of Microchannel Gas Cooler for Trans-critical CO2 Automotive Air Conditioning

doi:10.3969/j.issn.0253-4339.2005.04.012

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Development of Microchannel Gas Cooler for Trans-critical CO2 Automotive Air Conditioning

更新时间：2025-08-05

- Development of Microchannel Gas Cooler for Trans-critical CO2 Automotive Air Conditioning
- Journal of Refrigeration Issue 4, (2005)
- 作者机构：
  
  [1]清华大学热能动力工程与热科学重点实验室,北京100084 [2]苏州三川换热器有限公司,苏州,215101
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2005.04.012
  CLC：
- Published：2005
- 稿件说明：
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Development of Microchannel Gas Cooler for Trans-critical CO2 Automotive Air Conditioning[J]. Journal of refrigeration, 2005, (4).
DOI：

Development of Microchannel Gas Cooler for Trans-critical CO2 Automotive Air Conditioning[J]. Journal of refrigeration, 2005, (4). DOI： 10.3969/j.issn.0253-4339.2005.04.012.

摘要

基于平均温差法

调用REFPROP7.0确定超临界CO2剧烈变化的热物性

采用迭代方法对紧凑式微通道气体冷却器进行设计.选用近期发表的两个超临界CO2管内换热计算关联式进行设计计算

结果表明二者对气体冷却器的设计影响不大;CO2侧压降计算表明压降很小.文章阐述了有关试制工艺.

Abstract

A modified design calculation program was developed for gas coolers using the mean temperature difference method.Since the variable thermophysical properties of supercritical CO_2 significantly influence the convection heat transfer in tubes

the thermodynamic and transport properties of supercritical CO_2 used in the calculations were determined with REFPROP7.0.The two most recent published correlations for in-tube cooling were also used in the program.The results show no notable difference between the two correlations.The in-tube pressure drop predicted is also quite small.

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