节流过程热力学特性及工程计算  

Throttling Process Thermodynamic Properties and Engineering Calculation

作　　者：宫克勤[1,2] 施微[1] 卢丽冰[1] 李晓庆[1] 

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318 [2]黑龙江省防灾减灾及防护工程重点实验室,黑龙江大庆163318

出　　处：《应用能源技术》2014年第7期35-39,共5页Applied Energy Technology

基　　金：黑龙江省教育厅科技项目资助(项目号12521048)

摘　　要：分析节流过程中系统储存能与流动功之间的转换关系以及内位能变化对节流温度效应的影响,从能量转换与温度效应方面说明绝热节流与绝热膨胀过程之间的区别,给出实际流体节流的热力学性质计算方法,对过热水蒸气和未饱和水的绝热节流过程进行计算。计算结果表明:未饱和水节流气化相变导致过程的冷效应更加显著。The throttling process transformation between storage energy and flow work as well as the impact of internal potential upon temperature effect is analyzed in this paper,the difference between adiabatic expansion process and adiabatic throttle process is stated in the view of energy conversation and temperature effect,the calculating method of actual fluid throttling thermodynamic properties is provided. The adiabatic throttling process of superheated steam and unsaturated water are calculated.The result shows that the throttling temperature effects of unsaturated water is more pronounced due to the gasifying phase transitioning.

关 键 词：节流过程 热力学特性 储存能 温度效应 水蒸气 

分 类 号：TK0[动力工程及工程热物理]