Energy analysis of a simple PV/T system for heating using a variable speed vapor compressor system
1 Department of Mechanical Engineering, Engineering Division, Campus Irapuato-Salamanca, University of Guanajuato. Salamanca-Valle de Santiago km 3.5+1.8, C.P. 36885, Mexico.
2 IRSE Research Group, Department of Mechanical Engineering, Engineering Division, Campus Irapuato-Salamanca, University of Guanajuato. Salamanca-Valle de Santiago km 3.5+1.8, C.P. 36885, Mexico.
Global Journal of Engineering and Technology Advances, 2024, 18(03), 090–101.
Article DOI: 10.30574/gjeta.2024.18.3.0044
Publication history:
Received on 02 February 2024; revised on 09 March 2024; accepted on 12 March 2024
Abstract:
The use of photovoltaic/thermal (PV/T) modules reduces the losses in the photovoltaic cells and, in addition, uses the waste heat in the panel. This paper presents the simulation results of a PV/T system for domestic hot water supply using a vapor compression system during the four seasons of the year in the conditions of Salamanca, Mexico. The results obtained from the simulation indicate that the cooling of the panel causes an increase of approximately 7% in PV efficiency. During the spring, when there is greater solar radiation and, therefore, greater electrical power generation, despite the average temperature of around 36 °C, the lowest efficiency is found. On the other hand, the highest efficiency is achieved in winter, reaching up to 22%. As for the performance coefficient, the highest value is observed during the spring, with a coefficient of performance (COP) of 6.63, while the lowest value is recorded in summer, with a COP of 5.11. It is concluded that this system can satisfy the domestic hot water demand for the conditions under study.
Keywords:
Domestic hot-water; Heat pump; Optimization; Photovoltaic energy; Simulation.
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