Abstract
This research project was focused on utilization of active and passive cool roof systems to enhance the comfortability of building occupants with attic temperature reduction. Therefore, an ideal cool roof system was developed with the implementation of thermal reflective coating (TRC), MAC-solar-powered fans, and a rainwater harvesting system. The solar-powered fans were incorporated into the moving air cavity (MAC), which accelerated the airflow rate within the cavity and ejected the hot air out before it was transferred to the attic region. Meanwhile, the rainwater harvesting system was implemented to cool down the rooftop temperature, reducing the rate of heat transfer from the rooftop to the attic region. An automated actuate system (thermostat) was installed with a water pump to cool down the rooftop temperature efficiently. In addition, a small-scale cooling tower, solar panel, solar-powered fan, and power filter were installed to enhance the cooling performance of the rainwater harvesting system. This eco-friendly cool roof system successfully reduced the attic temperature significantly (by up to 6.5°C) as compared to the cool roof model integrated with MAC and TRC. As a result, this integrated cool roof design demonstrated enhanced comfortability of building occupants with sustainable renewable energy.
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