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Abstract

This study analyzes the enhancement of energy efficiency in photovoltaic-thermal (PV/T) systems, which enable the simultaneous generation of electrical and thermal energy from solar radiation. The research focus is an autonomous mobile unit based on multi-channel polycarbonate heat collectors with a hydraulic diameter of 8 mm, characterized by their lightweight nature and superior corrosion resistance compared to conventional metal absorbers. Experimental investigations were conducted at the solar testing field of the Physical-Technical Institute of the Academy of Sciences of Uzbekistan under extreme continental climatic conditions to determine the system's stable thermophysical indicators. The results demonstrated that active water cooling using polycarbonate collectors reduced the operating temperature of the photovoltaic panels by an average of 15-20 °C compared to standard panels, leading to an 8-12% increase in electrical efficiency. Furthermore, it was experimentally confirmed that the overall thermal and electrical energy utilization allows the system's total energy efficiency to reach 60-70%. These findings confirm the high energetic and economic viability of implementing autonomous mobile PV/T devices for consumers located in remote areas far from centralized power grids.

First Page

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Last Page

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