Abstract
In the present study, the performance of a novel hybrid passive cooling system was studied analytically and numerically in terms of its ability to achieve thermal comfort conditions, produce electricity, and reduce energy consumption. The new hybrid system that has been proposed in this study consists of a photovoltaic solar chimney (SC-PV) system, which in turn consists of a solar chimney (SC) combined with photovoltaic panels (PV). An underground space (UGS) system connects to the photovoltaic solar chimney (SC-PV) system through a residential room. This novel hybrid system is a completely new passive cooling system that is called SC-PV-UGS in the present study. The present system's performance has been studied in hot and moderate climates. The results indicated that the SC-PV-UGS system can provide thermal comfort conditions for the room's residents. The total electricity produced during the hours of solar radiation for the three test days in the hot climate was 310 kWh, while it was 329 kWh in the moderate climate. The total annual electricity produced by the SC-PV-UGS system for the hot climate was 2024 kWh, and for the moderate climate, it was 2318 kWh. The total cooling demand in a hot climate was reduced to 339 kWh, which is 55.9 % of the total cooling demand of the conventional non-passive system.
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