| Experimental Study on Heat Transfer and Pressure Drop of Micro-Sized Tube Heat Exchanger简 |
| |
| 引用本文： | 王秋香,戴传山.Experimental Study on Heat Transfer and Pressure Drop of Micro-Sized Tube Heat Exchanger简[J].天津大学学报(英文版),2014,20(1):21-26. |
| |
| 作者姓名： | 王秋香 戴传山 |
| |
| 基金项目： | Supported by National Basic Research Program of China （＂973＂ Program, No. 2011 CB707203）. |
| |
| 摘 要： | A micro-sized tube heat exchanger(MTHE) was fabricated, and its performance in heat transfer and pressure drop was experimentally studied. The single-phase forced convection heat transfer correlation on the sides of the MTHE tubes was proposed and compared with previous experimental data in the Reynolds number range of 500—1 800. The average deviation of the correlation in calculating the Nusselt number was about 6.59%. The entrance effect in the thermal entrance region was discussed. In the same range of Reynolds number, the pressure drop and friction coefficient were found to be considerably higher than those predicted by the conventional correlations. The product of friction factor and Reynolds number was also a constant, but much higher than the conventional.
|
| 关 键 词： | 管式换热器 实验数据 压降 传热 微米级 摩擦系数 雷诺数 传递关系 |
Experimental study on heat transfer and pressure drop of micro-sized tube heat exchanger |
| |
| Qiuxiang Wang,Chuanshan Dai.Experimental study on heat transfer and pressure drop of micro-sized tube heat exchanger[J].Transactions of Tianjin University,2014,20(1):21-26. |
| |
| Authors: | Qiuxiang Wang Chuanshan Dai |
| |
| Institution: | 1. Key Laboratory of Efficient Utilization of Low and Medium Grade Energy of Ministry of Education, Tianjin University, Tianjin, 300072, China
|
| |
| Abstract: | A micro-sized tube heat exchanger (MTHE) was fabricated, and its performance in heat transfer and pressure drop was experimentally studied. The single-phase forced convection heat transfer correlation on the sides of the MTHE tubes was proposed and compared with previous experimental data in the Reynolds number range of 500–1 800. The average deviation of the correlation in calculating the Nusselt number was about 6.59%. The entrance effect in the thermal entrance region was discussed. In the same range of Reynolds number, the pressure drop and friction coefficient were found to be considerably higher than those predicted by the conventional correlations. The product of friction factor and Reynolds number was also a constant, but much higher than the conventional. |
| |
| Keywords: | micro-sized tube heat exchanger heat transfer pressure drop entrance effect |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ |
