The Derivation of System Parameters for a Ground Source Heat Pump (GSHP)

Unal Camdali, Murat Tunc, Mehmet Emre Erdem, Erhan Tuncel

Abstract


As well known the widespread use of nonrenewable energy sources such as fossil fuels cause environmental problems. Ground source heat pumps (GSHP) are highly efficient renewable energy system used for heating and cooling where cool deep ground as a source medium is at the constant temperature.

In this study, a new simulation model has been developed and used for heat pumps for low global warming potential (GWP) refrigerants such as R134a and validated by the experimental data. Also, the system parameters of a GSHP are obtained theoretically for heating and cooling modes of a building, located in Bolu City, Turkey. For this purpose, non-linear equations are determined by considering GSHP models in relevant literatures for heating and cooling capacity of 1.4 and 2.2 kW respectively for a building having dimensions as 4.4 m x 2.2 m x 3.6 m. In this respect, COPs for heating and cooling are determined and depicted.

The final design of the heat exchanger has also been optimized for R134a refrigerant in heating mode by using the developed algorithm to obtain the highest performance improvement, thus the numerical results can be found at the end of this study.


Keywords


Ground Source Heat Pump, GSHP, heat pump, heating, Bolu, Bolu City, Turkey

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v15i2.14948.g9060

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