Design of thermoelectric radiant cooling-photovoltaic panels system in the building

In this study, a theoretical model is presented to investigate the performance of a thermoelectric (TE) radiant cooling system combined with photovoltaic (PV) modules as a power supply in a building with an am-bient temperature reaching more than 45 degrees C. The combined system TE/PV performance is studied under different solar radiation by using the hourly analysis program and photovoltaic system software. The thermal and elec-tric characteristics of TE are theoretically investigated under various sup-plied voltages using the multi-paradigm programming language and numer-ical computing environment. Also, a theoretical analysis of heat transfer between the TE radiant cooling system and an occupied zone from the side, and the other side between the TE radiant cooling system and duct zone is presented. The maximum power consumption by TE panels and building cooling load of 130 kW is predicted for May and June. The 145 units of PV panels could provide about 50% of the power required by TE panels. The thermal and electric characteristics of TE panels results show the min-imum cold surface temperature of 15 degrees C at a supplied voltage between 6 V and 7 V, and the maximum hot surface temperature of 62 degrees C at a supplied voltage of 16 V. The surface temperature difference between supplied cur-rent and supplied power increases as supplied voltage increases. At a higher supplied voltage of 16 V, the maximum surface temperature difference be-tween supplied current, and supplied power of 150 degrees C, 3.2 A, and 48 W, respectively. The cooling capacity increases as supplied voltage increases, at a surface temperature difference of -10 degrees C and supplied voltage of 16 V, the maximum cooling capacity is founded at about 60 W. As supplied voltage decreases the coefficient of performance increases. The maximum coefficient of performance is about 5 at the surface temperature difference of -10 degrees C and supplied voltage of 8 V.