| 冷冻消融预冷系统热力学分析 |
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| 引用本文： | 夏元通,徐彬凯,叶萍,刘宝林.冷冻消融预冷系统热力学分析[J].上海理工大学学报,2017,39(5):438-443,466. |
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| 作者姓名： | 夏元通 徐彬凯 叶萍 刘宝林 |
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| 作者单位： | 上海理工大学 能源与动力工程学院, 上海 200093,上海理工大学 医疗器械与食品学院, 上海 200093,上海理工大学 医疗器械与食品学院, 上海 200093,上海理工大学 医疗器械与食品学院, 上海 200093 |
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| 基金项目： | 浦东新区科技发展基金资助项目（PKJ2014-S16） |
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| 摘 要： | 将单级蒸气压缩式制冷系统作为冷冻消融设备的预冷系统,利用热力学第一定律、第二定律对其建立数学模型,进行能量分析和?分析.研究了R134a,R22,R404a这3种制冷剂在不同蒸发温度和冷凝温度下循环性能系数、总损失、总效率的变化,以及系统中各部件的?损失、?损失占比和?效率.结果表明,在所选工况范围内,R22的性能系数、总?损失、总?效率均优于R134a和R404a,但与R134a相比无显著差异.计算结果表明,系统中压缩机、冷凝器、毛细管是循环总?损失的主要来源,而回热器及蒸发器的损失较少,分析了其原因,并提出了改进建议.
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| 关 键 词： | 冷冻消融 分析 热力学 预冷系统 |
| 收稿时间： | 2017/3/2 0:00:00 |
Thermodynamic Analysis of Subcooler in a Cryoablation System |
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| XIA Yuantong,XU Binkai,YE Ping and LIU Baolin.Thermodynamic Analysis of Subcooler in a Cryoablation System[J].Journal of University of Shanghai For Science and Technology,2017,39(5):438-443,466. |
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| Authors: | XIA Yuantong XU Binkai YE Ping and LIU Baolin |
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| Institution: | School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China and School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | The VCRS (vapor compression refrigeration system) was applied as a subcooler to obtain the needed temperature of a cryoablation system by J-T effect,and a mathematic model based on the first and second laws of thermodynamics was established for the energy and exergy analysis using R134a,R22 and R404a in the subcooling system of the cryoablation system.The effects of the evaporator and condenser temperatures on the COP,total exergy destruction and total exergy efficiency of the system were investigated.The exergy destruction and exergy efficiency in different system components were also displayed.The R134a and R404a systems have lower COP and exergy efficiency but higher exergy destruction compared to the R22 system.However,the performance of R134a system is closer to the R22 system.So,the best refrigerant is R22 and R134a is a good alternative to R22.The major exergy destruction occurs in the compressor,condenser and capillary tube among all system components.The reasons and improvement suggestions were presented. |
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| Keywords: | cryoablation exergy analysis thermodynamics subcooling system |
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