ExperimentonPerformanceofLow-TemperatureExhaustSteamReclamation  

作　　者：严俊杰[1] 武心壮[1] 种道彤[1] 周晓丽[1] 

机构地区：[1]西安交通大学能源与动力工程学院,710049,西安

出　　处：《西安交通大学学报》2009年第5期8-12,共5页Journal of Xi'an Jiaotong University

基　　金：国家“863计划”资助项目（2006AA052230）;国家自然科学基金资助项目（50676078）.

摘　　要：针对不同的喉嘴距、面积比，实验研究了不同的进水压力、进水温度和出水压力对低温乏汽回收利用装置性能的影响规律．发现在进水压力为0．14～O．50MPa、进水温度为23～60℃、出水压力为0．096-0．110MPa，以及4种喉嘴距、3种面积比的实验条件范围内，随着喉嘴距和面积比的增加，加热温升和流量比先增大后减小，得到最佳归一化喉嘴距L=4．50，以及最佳面积比m=6．25，使得加热温升和流量比最大．同时，加热温升和流量比均随着进水压力和进水温度的增加而减小，当出水压力升高时，装置性能变差，加热温升和流量比均减小．An experiment on the performance of water-driven jet steam ejectors with three area ratios and four distances between the throat and the spout was conducted at the inlet water pressure of 0. 14-0. 50 MPa, the temperature of 23-60 ℃, and the outlet water pressure of 0. 096-O. 110 MPa. The results show that the temperature rise and the flux ratio increased first and then decreased with the increase of the area ratio and the distance between the throat and the spout. The values of the temperature rise and the flux ratio would be maximum when the area ratio equaled 6.25 and the dimensionless distance between the throat and the spout was 4. 50. In addition, the temperature rise and the flux ratio decreased with the increase of the inlet water pressure, the inlet water temperature, and the outlet pressure, respectively.

关 键 词：乏汽回收 喉嘴距 面积比 加热温升 流量比 

分 类 号：TK11[动力工程及工程热物理—热能工程]