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板式气冷器中超临界CO2侧表面换热系数研究

卢国强顾众谢晶陈旭升

压力容器2024，Vol.41Issue(6)：43-51,9.

压力容器2024，Vol.41Issue(6)：43-51,9.DOI:10.3969/j.issn.1001-4837.2024.06.007

板式气冷器中超临界CO2侧表面换热系数研究

Study on heat transfer coefficient of supercritical CO2 side surface of plate gas cooler

卢国强 ¹顾众 ²谢晶 ³陈旭升⁴

作者信息

1. 上海海洋大学食品学院,上海 201306||上海冷链装备性能与节能评价专业技术服务平台,上海 201306
2. 上海海洋大学食品学院,上海 201306||上海冷链装备性能与节能评价专业技术服务平台,上海 201306||浙江英诺绿能科技有限公司,杭州 310051
3. 上海海洋大学食品学院,上海 201306||上海冷链装备性能与节能评价专业技术服务平台,上海 201306||上海水产品加工及贮藏工程技术研究中心,上海 201306||食品科学与工程国家级实验教学示范中心(上海海洋大学),上海 201306
4. 浙江英诺绿能科技有限公司,杭州 310051
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摘要

Abstract

In order to study the effect of the factors leading to the occurrence of the maximum surface heat transfer coefficient h on the supercritical CO2 side in plate gas coolers and the effect of shifting this maximum point on the average heat transfer coefficient,a MATLAB-based distributed parameter analysis method for heat exchangers was employed to investigate the distribution pattern of the surface heat transfer coefficient h along the plates of the gas cooler,and examine the dominant factors contributing to the appearance of h's maximum values,as well as the effects of changing plate dimensions and flow rates on moving the maximum point and its effect on the average heat transfer coefficient.The simulation results indicate that the pseudocritical temperature plays a decisive role in the occurrence of h's maximum values in the plate gas coolers;the maximum Cp at a given pressure increases with pressure,but the pseudocritical temperature gradually decreases;Reducing the size of the plates or increasing the mass flow rate can increase the average heat transfer coefficient,and correspondingly,the heat transfer rate will also increase.Moreover,the increases in heat transfer rate brought by the increased mass flow rate are respectively 12.72%,12.79%,11.75%across three different conditions,although the pressure drop will also increase.However,when the maximum value of h is maintained around 6 170 W/(m2·K)or 5 120 W/(m2·K),shifting the maximum value point does not significantly increase the average heat transfer coefficient,and the corresponding heat transfer rate will also decrease.

关键词

板式气冷器/超临界CO2/表面换热系数/最值与最值点

Key words

plate gas cooler/supercritical CO2/surface heat transfer coefficient/maximum value and maximum point

分类

机械工程

引用本文复制引用

卢国强,顾众,谢晶,陈旭升..板式气冷器中超临界CO2侧表面换热系数研究[J].压力容器,2024,41(6):43-51,9.

基金项目

国家现代农业产业技术体系资助项目(CARS-47) （CARS-47）

压力容器

OA北大核心CSTPCD

ISSN：1001-4837

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