Abstract
In this paper, a simple pass photovoltaic-thermal air heater system with slats has been considered to study its electrical and exergy performance by theoretical and numerical analysis. The collector has been modeled in such a way that the absorber plate is totally covered by photovoltaic modules. The climatic data (solar irradiation, ambient temperature) of the Far Nord region of Cameroon have been used. Thin metallic strips called slats have been attached longitudinally at the bottom side of the absorber plate of the system. The first and second laws of thermodynamics have been applied to write the equations describing the functioning of the system. These equations have been solved by numerical computation using the gradient conjugate method. The influences of some operating parameters on the electrical and overall exergy efficiencies were investigated. It was found that (i) it is of great importance to use slats as an integral part of the absorber surface in order to achieve better efficiencies of single pass photovoltaic-thermal systems and (ii) the instantaneous overall electrical and overall exergy efficiencies of a simple pass hybrid (PV/T) solar air heater varies between 9-12% and 11,5-18,5% respectively.
Highlights
Renewable energies are going to be a main substitute for fossil fuels in the coming years for their clean and renewable nature
Nayak and Tiwari [10] studied the yearly effectiveness of photovoltaic thermal (PV/T) collector and earth air heat exchanger (EAHE) integrated with a greenhouse in terms of the energy and exergy analysis
The simple pass hybrid photovoltaic thermal (PV/T) solar air heater consisted of aluminum absorber plate
Summary
Renewable energies are going to be a main substitute for fossil fuels in the coming years for their clean and renewable nature. Nayak and Tiwari [10] studied the yearly effectiveness of PV/T collector and earth air heat exchanger (EAHE) integrated with a greenhouse in terms of the energy and exergy analysis They [11] presented the performance of a PV/T integrated greenhouse system for New Delhi climatic conditions. Raman and Tiwari [14] made comparative study on energy and exergy performance of a hybrid photovoltaic double pass and single pass air collector by using opaque PV module. Othman et al [19] studied experimentally the electrical and thermal efficiencies of a conventional double pass photovoltaic/thermal PV/T solar collector integrated with both water and air heating system. In the present work the exergetic and electrical performance of a simple pass hybrid (PV/T) solar air heater with slats (SPHSAH) was studied for Far Nord region of Cameroon. 35 Paiguy Armand Ngouateu Wouagfack et al.: Electrical and Exergy Analysis of a Simple Pass Photovoltaic–Thermal (PV/T) Air Heater with Slats Under Weather Conditions of the Far Nord Region, Cameroon
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