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Experimental investigation on the effect of soil type to the ground source heat pump's performance and energy consumption

In the present study an experimental investigation is carried out to predict the performance of ground source heat pump systems with using different soil type under Karabük prevailing conditions. A series of experiments were conducted on designed and produced experimental test rig. This study examines the effect of five different soil types on the performance and energy consumption of a heat pump. The experimental analysis showed that the evaporator capacity provided by sand was 46% and 42% higher than the capacity provided by red soil at the air flow rates of 0.087 kg/s and 0.015 kg/s, respectively. In terms of the condenser capacity, sand provided 46% and 30% higher capacity than red soil at the air flow rates of 0.087 kg/s and 0.015 kg/s, respectively. On the other hand, red soil consumed 8% and 6% less energy than sand at the air flow rates of 0.087 kg/s and 0.015 kg/s. The capacities provided by other soil types and their energy consumption ranged between these values. In terms of the COP values, red soil provided 6% higher performance than sand and humus soil at the air flow rates of 0.087 kg/s and 0.015 kg/s. The performance values obtained with other soil types ranged between these values.
PAPER REVISED: 2019-01-28
PAPER ACCEPTED: 2019-01-30
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