Performance assessment of a geothermally heated building

Yildiz Kalinci, M. Tolga Balta and Arif Hepbasli

Energy Policy, 2009, vol. 37, issue 4, 1502-1508

Abstract: This study deals with an exergetic performance evaluation of a geothermally heated building. This building used in the analysis has a volume of 1147.03m3 and a net floor area of 95.59m2, while indoor and exterior air temperatures are 20 and 0C, respectively. The geothermal heating system used for the heat production was constructed in the Ozkilcik heating center, Izmir, Turkey. Thermal water has a pressure of 6.8bar, a temperature of 122C and a mass flow rate of 54.73kg/s, while it is reinjected at 3.2 bar and 72C. The system investigated feeds three regions. Among these, the Ozkanlar region has supply/return pressure and temperature values of 4.6/3bar and 80/60C, respectively. Energy and exergy flows are studied to quantify and illustrate exergy destructions in the overall system. Total exergy input rate to the system is found to be 9.92kW and the largest exergy destruction rate occurs in the primary energy transformation at 3.85kW.

Keywords: Exergy; analysis; Low; exergy; Geothermal; energy (search for similar items in EconPapers)
Date: 2009
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Citations: View citations in EconPapers (7)

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