Experimental Analysis of Flow Rates in Ground Source Heat Pumps for Heating: A Case Study Southeastern Anatolia, Turkey

Geothermal energy offers considerable potential for use in buildings and infrastructure. This research investigates the application of a Horizontal Type Ground Source Heat Pump system to reduce energy consumption in buildings. The study assesses the energy efficiency and operational characteristics of ground source heat pump systems under the specific climatic conditions of the Batman region. To conduct this analysis, a horizontal ground source heat pump and an underground circuit were installed in a container at Batman University’s West Raman Campus. Experimental data revealed that soil temperatures below two meters remained constant at 21°C. Tests were carried out in December 2020 at three flow rates: maximum (0.19 m³/h), medium (0.12 m³/h), and minimum (0.09 m³/h). During the experiments, measurements were taken for the internal and external temperatures of the heat pump, the inlet and outlet temperatures of the water-monoethylene glycol mixture, and the temperatures of the cooling liquid components. The highest coefficient of performance for the heat pump was recorded at 2.43, while the overall system coefficient of performance reached 2.23.