<tideeAbstracts><tideeAbs><RefNo>4153</RefNo><Contributors>Hepbasli A and Tolga Balta M T</Contributors>. <PublishYear>2006</PublishYear><Source><italic>Building and Environment</italic> 2(2): 1-10</Source><Affiliation>Department of Mechanical Engineering, Faculty of Engineering, Ege University, 35 100 Bornova, Izmir, Turkey</Affiliation><Title>A study on modelling and performance assessment of a heat pump system for utilizing low temperature geothermal resources in buildings

TERI

TERI Information Digest on Energy and Environment

0972-6721

The Energy and Resources Institute

tidee-5-4-011

ABSTRACTS OF DISSERTATIONS OR ARTICLES

Geothermal energy

122006

54477477

<tideeAbstracts><tideeAbs><RefNo>4153</RefNo><Contributors>Hepbasli A and Tolga Balta M T</Contributors>. <PublishYear>2006</PublishYear><Source><italic>Building and Environment</italic> 2(2): 1-10</Source><Affiliation>Department of Mechanical Engineering, Faculty of Engineering, Ege University, 35 100 Bornova, Izmir, Turkey</Affiliation><Title>A study on modelling and performance assessment of a heat pump system for utilizing low temperature geothermal resources in buildingsLow and moderate geothermal resources are found in most areas of the world. A very efficient way to heat and air-condition homes and buildings is the utilization of GSHPs (ground source heat pumps), also known as GHPs (geothermal heat pump). The present study deals with the modelling and performance evaluation of a heat pump system utilizing a low-temperature geothermal resource, which is approximated to a geothermal reservoir. The system was designed, constructed, and tested in Nigde University, Nigde, Turkey and has been successfully operated since 2005. Energy and exergy analysis methods were used to assess the system performance based on the experimental data. Exergy destructions (or irreversibilities) as well as energy and exergy efficiency relations were presented for each component of the heat pump unit and the whole system, while some thermodynamic parameters, such as fuel depletion ratio, relative irreversibility, productivity lack, exergetic factor and improvement potential, were investigated for the system. Energy and exergy efficiency values on a product/fuel basis were found to range from 73.9% to 73.3% and 63.3% to 51.7% at dead (reference) state temperatures varying from 0 to 25 ºC for the heat pump unit and entire system, respectively. It is expected that the model presented here would be beneficial to the researchers, government administration, and engineers working in the area of heat pump systems for residential applications. (3 figures, 1 table, 17 references)