一种板壳式换热器传热准则关系式的实验分析  

Experimental Analysis on Heat Transfer Correlation of Plate-Shell Heat Exchangers

作　　者：刘家瑞[1] 赵巍[1] 黄晓东 张华[1] 余晓明[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]东莞埃欧热能技术有限公司,广东东莞523053

出　　处：《动力工程学报》2015年第11期893-900,共8页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(51176124)

摘　　要：基于板式换热器的研究成果,对板壳式换热器进行实验研究,利用等流速法求解传热准则关系式.通过控制冷流体、热流体流速相同,对1/1流程组合的板壳式换热器进行实验,并对比和分析实验数据.结果表明:利用板式换热器的经验值拟合得到的传热准则关系式在不同定性温度下并不相同;1/1流程组合板壳式换热器冷流体、热流体的传热准则关系式的参数均为定值,即系数为0.182 5,雷诺数指数为0.75,普朗特数指数为0.34;板壳式换热器的传热准则关系式与板程流程数无关,且与壳程1流程和2流程也无关,但与3流程和4流程则呈现出系数相关的结论,3流程和4流程的系数分别为1流程的0.82倍和0.68倍.To solve the heat transfer correlation of a plate-shell heat exchanger （PSHE）, experimental study was made on the basis of relevant research results of plate heater exchanger （PHE） using equal velocity method. Keeping the flow rate of both cold and hot fluid to be constant, experimental tests were conducted to a 1/1 process PSHE, of which the results were compared and analyzed. Results show that the heat transfer correlation obtained by fitting the empirical value of PHE varies at different qualitative temperatures; the unknown parameters in heat transfer correlation of PSHE are all definite values, i.e. coeffi- cient 0. 182 5, Reynolds number index 0.75 and Prandtl number index 0.34; the heat transfer correlation of PSHE is unrelated to the flow processes at plate side, unrelated to the flow processes 1 and 2 at shell side, but is coefficient-related to the flow processes 3 and 4 at shell side, and the coefficients of processes 3 and 4 are 0.82 and 0.68 times of the process 1.

关 键 词：板壳式换热器 传热准则关系式 等流速法 流程数 定性温度 

分 类 号：TK172[动力工程及工程热物理—热能工程]