Daily and annual performance analyses of the BIPV/T system in typical cities of Sudan

Abstract

• A mathematical model of the BIPV/T system is established. • The energy-saving potential of the system for different regions of Sudan is analyzed. • Wadi Halfa has the highest total annual electrical power output. • The BIPV/T HVAC system satisfies a high percentage of the heating needs of Sudan. In this paper, a numerical study is carried out to investigate the performance of a coupled BIPV/T-AHU system in Sudan. A mathematical model was utilized, Matlab Simulink was used to do simulation. Results showed good agreement with experimental data from the literature. The problem studied in this paper is reducing the energy required for heating in winter (preheating BIPV/T) and avoiding the high photovoltaic cell temperature in summer. We compare the energy consumption with and without BIPV/T-AHU in different cities in Sudan. The results showed that utilizing the exhaust air to cool the photovoltaic cell could reduce the PV/T cell temperature in the range ( 9 − 12 ) ∘ C , which can increase the electrical power output in a range of ( 12 − 21.44 ) W / m 2 . In winter, utilization of the preheating BIPV/T system can decrease the heating load in Wadi Halfa in the range of ( 6 − 107.1 % ) . Damazein does not need a high heating power in the daytime for the air conditioning system depending on the local climate, so the heat energy produced by the system can be used for drying, desiccant cooling, or heating water, with increasing the electric power produced by cooling PV/T cells. The results indicated a great possibility to use the BIPV / T system under the studied conditions, in addition, this study provides important information for the application of the BIPV / T system in these areas.