强化热端换热对涡流管性能影响

TK221; 涡流管内部能量分离导致的外层高温流体与内层低温流体的热量交换,影响了制冷效果.为此,基于对流传热原理,设计了一种强制冷却的涡流管结构,在涡流管的热端外加冷却水腔,通入循环水对涡流管外壁进行冷却.通过实验和数值模拟的方式,研究不同结构参数和操作参数下,冷却热端外壁面对涡流管制冷性能的影响.结果表明:与传统涡流管相比,强制冷却能够削弱外层热气对回流冷气的影响,提高涡流管的制冷性能.阿基米德螺线型喷嘴较直线型喷嘴的提升更明显,最大单位制冷量达到12.53 kJ/kg.在压比为2、3和4的条件下,强制冷却涡流管的制冷性能均有提升.强制冷却涡流管的单位制冷量随热端管长径比的增加而升高,等熵...

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Published in大连理工大学学报 Vol. 61; no. 6; pp. 601 - 607
Main Authors 李昊睿, 艾国生, 张恒瑞, 王坤, 赵一鸣, 胡大鹏
Format Journal Article
LanguageChinese
Published 大连理工大学化工学院,辽宁大连 116024%塔里木油田公司,新疆库尔勒 841000 01.11.2021
Subjects
涡流管;强制冷却;数值模拟;实验验证
Online AccessGet full text
ISSN1000-8608
DOI10.7511/dllgxb202106007

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Abstract TK221; 涡流管内部能量分离导致的外层高温流体与内层低温流体的热量交换,影响了制冷效果.为此,基于对流传热原理,设计了一种强制冷却的涡流管结构,在涡流管的热端外加冷却水腔,通入循环水对涡流管外壁进行冷却.通过实验和数值模拟的方式,研究不同结构参数和操作参数下,冷却热端外壁面对涡流管制冷性能的影响.结果表明:与传统涡流管相比,强制冷却能够削弱外层热气对回流冷气的影响,提高涡流管的制冷性能.阿基米德螺线型喷嘴较直线型喷嘴的提升更明显,最大单位制冷量达到12.53 kJ/kg.在压比为2、3和4的条件下,强制冷却涡流管的制冷性能均有提升.强制冷却涡流管的单位制冷量随热端管长径比的增加而升高,等熵效率最高可以达到34.1％.
AbstractList TK221; 涡流管内部能量分离导致的外层高温流体与内层低温流体的热量交换,影响了制冷效果.为此,基于对流传热原理,设计了一种强制冷却的涡流管结构,在涡流管的热端外加冷却水腔,通入循环水对涡流管外壁进行冷却.通过实验和数值模拟的方式,研究不同结构参数和操作参数下,冷却热端外壁面对涡流管制冷性能的影响.结果表明:与传统涡流管相比,强制冷却能够削弱外层热气对回流冷气的影响,提高涡流管的制冷性能.阿基米德螺线型喷嘴较直线型喷嘴的提升更明显,最大单位制冷量达到12.53 kJ/kg.在压比为2、3和4的条件下,强制冷却涡流管的制冷性能均有提升.强制冷却涡流管的单位制冷量随热端管长径比的增加而升高,等熵效率最高可以达到34.1％.
Author 李昊睿
艾国生
赵一鸣
张恒瑞
胡大鹏
王坤
AuthorAffiliation 大连理工大学化工学院,辽宁大连 116024%塔里木油田公司,新疆库尔勒 841000
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WANG Kun
ZHAO Yiming
AI Guosheng
LI Haorui
ZHANG Hengrui
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