个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:Vice Dean of Graduate School
其他任职:建筑能源研究所所长
性别:男
毕业院校:哈尔滨建筑大学
学位:博士
所在单位:土木工程系
学科:供热、供燃气、通风及空调工程. 控制理论与控制工程. 建筑学
办公地点:大连市凌工路2号大连理工大学建设工程学院3号楼601室
联系方式:0411-84706260
电子邮箱:zjldlut@dlut.edu.cn
The Performance Simulation Analysis of the Sewage-source Heat Pump Heater Unit Dealing with Large Temperature Difference
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论文类型:会议论文
发表时间:2017-01-01
收录刊物:EI、CPCI-S
卷号:205
页面范围:1769-1776
关键字:Large temperature difference; heat pump hot water unit; two stage series
摘要:Generally, the temperature of domestic waste water is high above 30 degrees C. However, when dealt with by common sewage-source heat pump system, temperature difference between inlet side and outlet side is small as 5 degrees C. It leads to manifold cycles and energy waste. To acquire a unit of heat pump water heater of sewage dealing with large temperature difference with high energy utilization rate, through which the cold water (about 5 degrees C) can be heated once to hot water (about 45 degrees C) to reach the temperature for daily use and waste water (about 30 degrees C) can be rapidly dropped to cold water (about 6 degrees C) to satisfy the standard of waste water emissions. In this paper, two staged series of heat pump water heater dealing with large temperature difference is proposed. And performance factor of system is analyzed through simulation by MATLAB so as to find the optimum middle operating point. This method ensures pattern operating in large temperature difference but in small flow at both the hot and cold sides. At the same time, it avoids the lasting elevation of condensing temperature and the constant reduction of temperature in evaporation, which helps to facilitate the stability and optimal performance of the operating unit. (c) 2017 The Authors. Published by Elsevier Ltd.