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Roof surface temperature of metal deck roof at an outdoor condition during the hottest condition of a sunny day in Malaysia
Source publication
The trend in building energy consumption has been steadily increasing and will continue to rise significantly in the future. The application of a reflective insulation system in roof assembly is proven to be effective in reducing heat gain across the roof and can enhance indoor thermal comfort. This paper presents the development of an Indoor Solar...
Citations
... Inspired by this 3D model of polar bear hair, integrating refractory materials into the walls of refrigerated containers could similarly enhance thermal insulation by assigning specific functions to each layer. An initial layer, such as a low-emissivity aluminum film, would reflect most of the incoming heat, especially in sunexposed conditions [33]. A secondary layer made of bio-sourced bamboo fiber panels with low thermal conductivity could add supplementary insulation that is both cost-effective and environmentally friendly [34]. ...
Biomimicry, emulating nature’s time-tested strategies, has emerged as a powerful tool for solving complex engineering challenges. Over millions of years of evolution, organisms have developed highly efficient systems for survival in extreme environments, offering solutions that often surpass human-made technologies. Scientists can create materials that mimic nature’s exceptional efficiency in regulating heat transfer by studying natural systems, such as polar bear’s fur or other organism’s structures adapted to harsh climates. With its specialised multi-layered structure and optical properties, the polar bear’s fur is an excellent model for managing heat retention. This study examines its insulating qualities using a comprehensive 3D simulation to understand how the structure regulates body heat. We use MATLAB to simulate radiative heat transfer between individual hair fibers while considering optical characteristics, such as transmittance, absorption, and reflectivity. The results reveal that even in freezing temperatures (−40 °C), the unique structure of polar bear hair considerably reduces radiative heat loss, keeping interior temperatures over 37 °C. Additionally, according to our simulations, multi-layer hair arrangements increase thermal efficiency by up to 16 °C, indicating conceivable uses for bio-inspired insulation materials. These results have consequences for ecological sustainability, the development of thermal insulation technology, and the design of energy-efficient materials and structures.
... By reflecting solar radiation and emitting absorbed heat, SHRCs can lower the surface temperatures of treated areas by as much as 30°C compared to untreated surfaces. This reduction in surface temperature translates to lower indoor temperatures, reducing the need for air conditioning during peak sunlight hours (Ashhar & Lim, 2023;Mahmoudi et al., 2022). ...
