Understanding the Performance of Windcatchers in Hot and Dry Climate of India

Abstract

This working paper aims to understand the performance of windcatchers as passive cooling solutions in hot, dry, and arid climates. By examining the history, design, and effectiveness of windcatchers, the research seeks to explore their potential for creating sustainable and energy-efficient buildings. The paper focuses on the origin and spread of windcatchers to India, their application in hot, dry and arid climatic zones, technological enhancements, and case studies of modern windcatchers constructed in India. The methodology involves a literature review to understand the principles of windcatchers and their historical use. Additionally, secondary and primary case studies are conducted to investigate the strategies employed in different climates and analyze the performance of specific buildings. Data collection includes indoor temperature measurements, outdoor temperature for references, and simulations of yearly performance using a design builder. The case studies highlight the effectiveness of windcatchers in providing natural cooling and reducing energy consumption. For example, the CII-Sohrabji Godrej Green Business Center, a LEED Platinum-certified building, shows significant energy savings and temperature maintenance within comfortable ranges. The research emphasizes the importance of incorporating windcatchers into contemporary sustainable design practices to create resilient and energy-efficient built environments. By leveraging the knowledge and techniques from traditional architecture, windcatchers can contribute to reducing the environmental impact of cooling systems and address the rising demand for cooling in hot climates like India. The study concludes that windcatchers offer a promising approach to enhance sustainability, occupant comfort, and energy efficiency, outweighing the initial construction costs in the long run. Keywords: Windcatchers, Natural Ventilation, Passive Cooling