Performance of BiSPVT Systems and Passive Cooling Techniques: A Climate-Sensitive Approach across Six Climatic Conditions of India

Focusing on the Indian subcontinent, a tropical region with ample sunshine, this paper examines the building integrated semitransparent photovoltaic thermal (BiSPVT) system’s viability. The study improves the system’s feasibility by incorporating a thermal mass and water circulation over the panels, which lower the solar cell temperature, reduce thermal gains and room air temperature, and increase solar cell efficiency. Previous studies often overlooked real-time conditions, assuming stable wind conditions. This paper addresses the impact of wind on evaporative cooling and the system’s thermal performance. Unlike earlier research that broadly categorized climates as hot or cold, this research explores six climatic conditions, including moderate and composite climates, and analyzes performance specifically for summer and winter months to provide a comprehensive understanding for effective implementation. The model has proven to be effective, achieving a temperature of 22.03°C under hot and dry conditions in January. For composite conditions during the same month, it reaches 20.68°C, and under cold and sunny climatic conditions in June, it maintains a temperature of 28°C. This effectiveness is a performance-based outcome that reflects the system’s ability to maintain comfortable indoor conditions relative to extreme external weather.