Abstract
This cool roof system focuses on utilization of rainwater harvesting systems by integrating the smart sensor to cool the roof and attic temperatures for the improvement of comfort level of building occupants. An ideal cool roof technology system is basically made up of these three components: (1) moving-air-cavity (MAC) ventilation, (2) solar-powered fan and (3) rainwater harvesting system. These three main components integrate to perform and control the cool roof system. Four small-scale cool roof models were designed and constructed to inspect the performance of the rooftop and attic temperatures. The experimental work was carried out indoors by employing the halogen lamp as the replacement for solar irradiation, while the ambient temperature is monitored to be around 29.8 °C throughout the test. The temperatures of the rooftop surface, MAC aluminum tube, and attic region were measured by K-type thermocouples to evaluate the performance of the cool roof designs. The solar-powered fans were incorporated into the MAC, which accelerated the airflow rate within the cavity and rejected the hot air out before transferring it to the attic region. Meanwhile, an innovative rainwater harvesting system was executed to cool the rooftop temperature rapidly by reducing the rate of heat transfer to the attic region. The result of this inventive cool roof system (Design Z) has successfully reduced the attic temperature by 10.8 °C compared to the normal metal deck roof model (Design W). The findings of the project revealed that the integrated cool roofing technology system comprises the ability to enhance the comfortability of building occupants toward a long-term sustainable development for a better world.
Highlights
A cool roof system is considered as a roofing system that has the capability to reduce the rate of heat transfer through the roof and attic, resulting in the reduction of the room temperature to provide the comfort level of occupants inside the buildings (Gupta and Tiwari, 2016)
The rate of temperature increase in the attic region was reduced by the reduction of heat energy transferred from the rooftop to the attic region. This eco-friendly cool roof system is able to reduce the attic temperature that enhances the comfortability inside the building occupants toward clean and sustainable energy utilization
An active cool roof system that integrated with different roof configuration was investigated to enhance the attic temperature reduction
Summary
A cool roof system is considered as a roofing system that has the capability to reduce the rate of heat transfer through the roof and attic, resulting in the reduction of the room temperature to provide the comfort level of occupants inside the buildings (Gupta and Tiwari, 2016). By introducing this cool roofing technology system with the combination of Moving-Air-Cavity (MAC) ventilation, solar-powered fan and rainwater harvesting system in the tropical country, it will enhance the comfortability inside the buildings, which acted as a low-cost method to save energy. Tested and compared their performances in terms of roof and attic temperatures
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
