Strong self-flushing technique for heat exchanger of sewage source heat pump system |
| |
Authors: | XIAO Hong-xi SUN De-xing and LI Xin |
| |
Affiliation: | 1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China 2. Architectural and Civil Engineering College, Shenyang University,Shenyang 110010, China |
| |
Abstract: | To better remove the contamination on the surface of a heat-exchanger in urban sewage source heat pump system (USSHPS), this paper analyzes the feasibility of strong self-flushing on the basis of experiments and presents a new on-line self-flushing technique, which ahemately flushes part of heat transfer tubes, In addition, operation principles and the structure of the new heat-exchanger are introduced and the feasible economical and technological cleaning plans are given by design calculation and scheme comparison. The result showsthat keeping each tube washed for one minute with 5 m/s, the operating cost is lower than (¥)5 and when oneflushing pump alternately flushes 10-20 heat exchangers, the saved costs of flushing 10 tubes alternately are over 4 times of the increased costs. |
| |
Keywords: | sewage heat pump heat exchanger alternation self-flushing |
本文献已被 CNKI 维普 万方数据 等数据库收录! |
| 点击此处可从《哈尔滨工业大学学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《哈尔滨工业大学学报(英文版)》下载全文 |