直燃高压发生器的传热模型研究  

The Research of a Heat Transfer Model of Direct-fired High Pressure Generator

作　　者：张全[1] 张璐[1] 徐刚[1] 刘渺[1] 黄晓峰[1] 

机构地区：[1]中南大学能源与动力工程学院

出　　处：《建筑热能通风空调》2005年第5期37-40,共4页Building Energy & Environment

摘　　要：本文以直燃溴化锂机组火管式高压发生器为研究对象,分析炉膛辐射段和管束段的传热情况,建立火管式高压发生器的传热计算模型,编制计算程序进行数值求解,并进行实验验证。结果表明,高压发生器总的换热量首先随空气过量系数α的增大而增大,达到一个峰值后又随着α的增大而减少。研究结果为火管式高压发生器的设计计算提供了依据,也为机组的自动控制提供参考。Based on analysis of the chamber radiation section and tube bank section, the computational model of heat transfer of the high pressure generator with fire tubes is established and attested, as well as numerical solutiofi gotten by programming. The results show that： with air excess coefficient o increasing the total heat transfer capability increases to a maximum then reduces. This paper can offer theory gist for the design of fire tube generator and provide important reference for automatic control of a direct-fired LiBr/H2O absorption chiller.

关 键 词：溴化锂机组 火管式高压发生器 传热模型 换热量 高压发生器 直燃 空气过量系数 火管式 计算模型 数值求解 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]