Performance of a gas engine driven heat pump for hot water supply systems

被引：50

作者：

Elgendy, E. ^{[1
]}

Schmidt, J. ^{[1
]}

Khalil, A. ^{[2
]}

Fatouh, M. ^{[3
]}

机构：

[1] Otto Von Guericke Univ, Fac Proc & Syst Engn, Inst Fluid Dynam & Thermodynam, D-39106 Magdeburg, Germany

[2] Cairo Univ, Fac Engn, Mech Power Engn Dept, Giza 12316, Egypt

[3] Helwan Univ, Fac Engn El Mattaria, Mech Power Engn Dept, Cairo 11718, Egypt

来源：

ENERGY | 2011年 / 36卷 / 05期

关键词：

Gas engine heat pump; Heating mode; R410A; Water heating; Primary energy ratio; Heat recovery; SOUTH-AFRICA;

D O I：

10.1016/j.energy.2011.02.030

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present work aimed at evaluating the experimental performance of a gas engine heat pump for hot water supply. In order to achieve this objective, a test facility was developed and experiments were performed over a wide range of ambient air temperature (10.9-25.3 degrees C), condenser water inlet temperature (33-49 degrees C) and at two engine speeds (1300 and 1750 rpm). Performance characteristics of the gas engine heat pump were characterized by water outlet temperatures, total heating capacity and primary energy ratio. The reported results revealed that hot water outlet temperature between 35 and 70 degrees C can be obtained over the considered range of the operating parameters. Also, total heating capacity and gas engine heat recovery decrease by 9.3 and 27.7%, respectively, while gas engine energy consumption increases by 17.5% when the condenser water inlet temperature changes from 33 to 49 degrees C. Total heating capacity, gas engine heat recovery and gas engine energy consumption at ambient air temperature of 25.3 degrees C are higher than those at ambient air temperature of 10.9 degrees C by about 10.9, 6.3 and 1.5% respectively. Moreover, system primary energy ratio decreases by 15.3% when the engine speed changes from 1300 to 1750 rpm. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2883 / 2889

页数：7

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