Experimental and Theoretical Investigations of a Ground Source Heat Pump System for Water and Space Heating Applications in Kazakhstan
Yerdesh Y. Amanzholov T. Aliuly A. Seitov A. Toleukhanov A. Murugesan M. Botella O. Feidt M. Wang H.S. Tsoy A. Belyayev Y.
November 2022MDPI
Energies
2022#15Issue 22
The ground source heat pump heating system is considered as one of the best solutions for the transition towards green heating under the continental climate conditions like Kazakhstan. In this paper, experimental and theoretical investigations were carried out to develop a ground source heat pump-based heating system under the weather conditions in Kazakhstan and to evaluate its thermodynamic performance. The water-to-water heat pump heating system, integrated with a ground source heat exchanger and used refrigerant R134a, was designed to provide hot water to meet the requirements for space heating. The predicted values of the coefficient of performance and the experimental results were found to be in good agreement within 6.2%. The thermodynamic performance of the system was also assessed using various environment-friendly refrigerants, such as R152a, R450A, R513A, R1234yf and R1234ze, as potential replacements for R134a. Although R152a is found to be a good alternative for R134a in terms of coefficient of performance and total equivalent warming impact, its flammability hinders its application. The heating system using refrigerants R450A, R513A, R1234yf and R1234ze shows 2–3% lower coefficient of performance than that of R134a. The highest exergy destruction is found to be attributed to the compressor, followed by the expansion valve, evaporator, and condenser. Considering their low flammability and low environmental impact, R450A, R513A, R1234yf and R1234ze are identified as valuable replacements for R134a.
coefficient of performance , energy efficiency , environmental-friendly refrigerants , exergy efficiency , experimental setup , ground source heat pump
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Department of Mechanics, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Department of Mechanical Engineering, Satbayev University, Almaty, 050013, Kazakhstan
Department of Mechanical Engineering, Hindusthan College of Engineering and Technology, Coimbatore, 641032, India
Université de Lorraine, CNRS, LEMTA, Nancy, F-54000, France
School of Engineering and Materials Sciences, Queen Mary University of London, London, E1 4NS, United Kingdom
Department of Machines and Devices of Manufacturing Processes, Almaty Technological University, Almaty, 050012, Kazakhstan
Department of Mechanics
Department of Mechanical Engineering
Department of Mechanical Engineering
Université de Lorraine
School of Engineering and Materials Sciences
Department of Machines and Devices of Manufacturing Processes
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