摘要
针对低温闪蒸气(BOG)压缩机工作时吸气温度低、变工况时气缸温度变化剧烈的问题,建立了压缩机导热有限元计算模型,得到了稳态、周期性非稳态气缸温度场及常温启动、预冷启动时气缸瞬时温度变化。研究结果表明:BOG压缩机稳定运行时气缸吸排气腔平均温度分别达-97℃和-21℃,周期性非稳态温度波动小于0.1℃。常温(30℃)启动后气缸内外壁最大温差为87.1℃,当预冷至-30℃启动时气缸内外壁最大温差仅为53.5℃,比常温启动时下降了38.6%。
Boil-off gas （BOG） compressors operate at low suction temperature and suffer from great temperature change when the working condition changes. In this study, the FEM simulation of heat transfer in a BOG compressor was performed, and the static and periodic transient temperature fields and their changes were obtained during the compressor starting both under ambient condition and precooling conditions. The results show that, when the BOG compressor operates steadily, the average temperatures in the suction chamber and the discharge chamber of the cylinder are -97 ℃ and -21 ℃, respectively, and the amplitude of temperature fluctuation is less than 0.1 ℃ in the periodic transient temperature field. In addition, the maximum temperature difference in the cylinder is 53.5 ℃ when the compressor starts at -30 ℃while it is 87.1 ℃ when the compressor starts under the ambient condition （at 30 ℃）.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2013年第1期48-51,67,共5页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(51105120)
国家科技支撑计划资助项目(2012BAA08B03)
关键词
闪蒸气压缩机
气缸
温度场
有限元分析
boil-off gas compressor cylinder temperature field finite analysis
