EXPERIMENTAL STUDY ON USING TWO TYPES OF SQUARE TUBE ABSORBERS AND DISTILLED WATER COOLANT IN A PHOTOVOLTAIC THERMAL COLLECTOR (PV/T).

Authors : Omran ALSHIKHI

Pages : 127-147

View : 16 | Download : 10

Publication Date : 2021-12-28

Article Type : Research Paper

Abstract :Several recently conducted studies have focused on different technologies that have been tested for improving photovoltaic insert ignore into journalissuearticles values(PV); modules’ performances and increasing the performances of solar systems. One of the most important of these techniques is the development of a heat exchanger design. According to extensive literature reviews, most photovoltaic panels use circular tubes, through which, water flows to carry out the cooling process. In the current experimental study, a different design has been applied, and square tubes have been used for increasing the panel-cooling tubes’ contact area. The hybrid photovoltaic thermal insert ignore into journalissuearticles values(PV/T); module’s performance has been evaluated and compared using a square-shaped copper tube in two types of heat exchangers, serpentine and head & riser insert ignore into journalissuearticles values(PV/Ts and PV/TH&R);. At flow rates 0.5 and 1 L/m, outdoor experiments were conducted during August 2019 in Karabük city, Turkey. Results show that in case of PV/T modules, the overall efficiency value was maximum 48.6% at 0.5 L/m while its average value was 59.4% at 1 L/m for serpentine heat exchanger. The mentioned values were 41.7% at 0.5 L/m and 54.7% at 1 L/m for head & riser heat exchanger, respectively. Furthermore, from the perspective of energy, the serpentine heat exchanger design with flow rate 1L/m showed better photovoltaic energy conversion in comparison with other designs and flow rates.
Keywords : photovoltaic thermal unit PV T, Serpentine, Head and Riser