In this study, both energy and exergy analyses and sustainability assessment of a thermal energy storage system with a solar-ground coupled heat pump installed in a house are performed. The actual operating data taken from the literature are utilized for model validation. The system considered here mainly consists of a solar collection system, an underground thermal storage system, an indoor air conditioning system, and a data collection system. First, energy analysis is employed to the system and its components, and the rates of energy input (solar radiation), energy storage, collector heat loss, and other heat loss are found to be 4.083 kW, 1.753 kW, 1.29 kW, and 1.04 kW for a 5 h working time, respectively, while the energy efficiency of the system is calculated to be 42.94%. Exergy analysis of the entire system is then conducted for various reference temperatures varying from to with a temperature interval of . As a result of this analysis, the rates of the maximum exergy input, exergy storage, and exergy losses are determined for a reference temperature of to be 0.585 kW, 0.24 kW, and 0.345 kW, respectively. Finally, the maximum exergy efficiency of the system is obtained to be 40.99% and the maximum sustainable development using sustainability index, which is a function of exergy efficiency, is calculated to be 1.6946 for a reference temperature of . Furthermore, the energy and exergy results are illustrated through Sankey (energy flow) and Grassmann (exergy loss and flow) diagrams.
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e-mail: hakan.caliskan@ege.edu.tr; Hakan.Caliskan@uoit.ca
e-mail: ahepbasli.c@ksu.edu.sa
e-mail: Ibrahim.Dincer@uoit.ca
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February 2011
Research Papers
Exergy Analysis and Sustainability Assessment of a Solar-Ground Based Heat Pump With Thermal Energy Storage
Hakan Caliskan,
Hakan Caliskan
Department of Mechanical Engineering, Faculty of Engineering,
e-mail: hakan.caliskan@ege.edu.tr; Hakan.Caliskan@uoit.ca
Ege University
, TR-35100, Izmir, Turkey
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Arif Hepbasli,
Arif Hepbasli
Department of Mechanical Engineering, College of Engineering,
e-mail: ahepbasli.c@ksu.edu.sa
King Saud University
, P.O. Box 800, Riyadh 11421, Saudi Arabia
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Ibrahim Dincer
Ibrahim Dincer
Faculty of Engineering and Applied Science,
e-mail: Ibrahim.Dincer@uoit.ca
University of Ontario Institute of Technology
, 2000 Simcoe Street North, Oshawa, ON, L1H 7K4, Canada
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Hakan Caliskan
Department of Mechanical Engineering, Faculty of Engineering,
Ege University
, TR-35100, Izmir, Turkeye-mail: hakan.caliskan@ege.edu.tr; Hakan.Caliskan@uoit.ca
Arif Hepbasli
Department of Mechanical Engineering, College of Engineering,
King Saud University
, P.O. Box 800, Riyadh 11421, Saudi Arabiae-mail: ahepbasli.c@ksu.edu.sa
Ibrahim Dincer
Faculty of Engineering and Applied Science,
University of Ontario Institute of Technology
, 2000 Simcoe Street North, Oshawa, ON, L1H 7K4, Canadae-mail: Ibrahim.Dincer@uoit.ca
J. Sol. Energy Eng. Feb 2011, 133(1): 011005 (8 pages)
Published Online: January 28, 2011
Article history
Received:
April 23, 2010
Revised:
September 13, 2010
Online:
January 28, 2011
Published:
January 28, 2011
Citation
Caliskan, H., Hepbasli, A., and Dincer, I. (January 28, 2011). "Exergy Analysis and Sustainability Assessment of a Solar-Ground Based Heat Pump With Thermal Energy Storage." ASME. J. Sol. Energy Eng. February 2011; 133(1): 011005. https://doi.org/10.1115/1.4003040
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