A method for the choice of the optimal balance-point temperature of air-to-water heat pumps for heating

被引：12
|
作者：
Naldi, Claudia [1 ,2 ]
Morini, Gian Luca [1 ]
Zanchini, Enzo [1 ]
机构：
[1] Univ Bologna, Sch Engn & Architecture, DIN Dept Ind Engn, I-40136 Bologna, Italy
[2] Univ Bologna, CIRI Interdept Ctr Ind Res Bldg & Construct, I-40131 Bologna, Italy
来源：
SUSTAINABLE CITIES AND SOCIETY | 2014年 / 12卷
关键词：
Air-to-water heat pumps; Hourly simulation; Bivalent temperature;
D O I：
10.1016/j.scs.2014.02.005
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A method for the hourly simulation of air-to-water heat pump systems working in heating mode is developed and implemented through MATLAB. The tool allows to consider both heat pumps with inverter and on-off ones, and takes into account the heat losses from the storage tank. The tool is applied to analyze the seasonal COP of a heat pump system located in Bologna (North-Center Italy), as a function of the bivalent temperature and of the storage volume. The results show that, in the case considered, the optimal value of the bivalent temperature is independent of the storage volume and is lower for heat pumps with inverter. With the optimal bivalent temperature, the highest seasonal COP is obtained without thermal storage. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：85 / 91
页数：7
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