Optimizing energy consumption of a water-loop variable-speed heat pump system

被引:30
作者
Yuan, Shui [1 ]
Grabon, Michel [2 ]
机构
[1] United Technol Res Ctr, E Hartford, CT 06108 USA
[2] Carrier Corp, F-01122 Montluel, France
关键词
Water-loop heat pump; Optimization; Energy efficiency; RECOVERY;
D O I
10.1016/j.applthermaleng.2010.11.012
中图分类号
O414.1 [热力学];
学科分类号
摘要
Water-loop heat pump (WLHP) systems have been widely used for decades. The most appealing feature of WLHP is its capability of handling simultaneous heating and cooling demands in a building and recovering heat generated from zones in cooling. The typical heat sink and source are cooling tower and boiler. WHLPs discussed in this paper are equipped with a variable-speed compressor; the cooling tower comes with one variable-speed fan; and the boiler has a continuously-adjustable capacity. This paper analyzes how the energy efficiency of individual component responds to variations in loop water temperature; demonstrates that there exists a unique loop-water temperature that minimizes overall energy consumption given a certain building load; proposes a practical strategy to find the optimal temperature in a real-time manner. (C) 2011 United Technologies Corporation. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:894 / 901
页数:8
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