颠簸状态下制冷系统气液分离器性能的影响研究  

An Investigation on the Liquid-vapor Separator Performance for Refrigeration System under Tossing Conditions

作　　者：陈光明[1,2] 张荣涛 杨申音 郝新月 周秋丽 高能 CHEN Guang-ming;ZHANG Rong-tao;YANG Shen-yin;HAO Xin-yue;ZHOU Qiu-li;GAO Neng(Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province,Institute of Refrigeration and Cryogenics,Zhejiang University,Hangzhou 310027,China;Ningbo Institute of Technology,Zhejiang University,Ningbo 315100,China;Beijing Institute of Aerospace Testing Technology,Beijing 100074,China)

机构地区：[1]浙江省制冷与低温技术重点实验室,浙江大学制冷与低温研究所,浙江杭州310027 [2]浙江大学宁波理工学院,浙江宁波315100 [3]北京航天试验技术研究所,北京100074

出　　处：《流体机械》2018年第2期54-59,共6页Fluid Machinery

基　　金：国家自然科学基金资助项目(51276171)；宁波市科技专项(2016B10003)。

摘　　要：主要针对混合工质两级喷射制冷系统在船舶出海条件下的运行稳定性进行了分析研究。气液分离器是喷射式制冷系统中一个较为重要的设备部件。内部液体的波动与飞溅,容易使得气液分离器出现出气带液的现象,而高压级喷射器引射的出气带液量对整个系统的工作性能会有一定的影响。本文通过数值模拟与试验研究的方法对系统中的气液分离器进行了研究,结果表明,25cm为内部最大安全液位。当分离器内部液位高于25 cm时,气液分离器的出气带液量会随着内部液面高度的上升而增加。另外,在分离器中增设挡板对内部液体的波动与飞溅有明显的抑制作用。This paper is to look at the stability of the binary fluid two stage ejector refrigeration system for marine operation conditions.The liquid-vapor separator is the key factor for this.Due to inner liquid fluctuating and splashing,the liquid amount outflowing through the gas outlet of the separator which is entrained to the high pressure ejector plays a significant role for the whole system performance.The relevant numerical simulation and the experimental evaluation are carried out respectively.The experimental results indicate that 25 cm height is the inner safe liquid level in terms of the separator applied in this research.Liquid amount flowing through the gas outlet is increasing as the level goes up beyond this height.This situation is improved by a large margin through being set with baffles inside the separator.

关 键 词：渔船废热 喷射制冷系统 颠簸状态 稳定性 气液分离器 出气带液量 

分 类 号：TH6[机械工程—机械制造及自动化] U664[交通运输工程—船舶及航道工程]