Cool Roof Technology Journals

It is a relatively cheap option with substantial benefits.

Cool roof technology journals.

Whereas darker traditional roofing materials absorb sunlight the reflective surfaces of a cool roof reflect it away. Cool roof requirements vary by region but generally are based on solar reflectance and. Cool roofs is a green building technology that is especially suited to the climate of india. This cool roof technology was demonstrated under the cool roof and passive ventilation project implemented by taru leading edge pvt.

Cool roofs achieve this by reflecting some of the infrared ir light from the sun. Overall energy demand reduces between 1 and 8 5 relative to an albedo of 0 1. Yet you may not be familiar with what exactly the term means so let s give you a quick primer on cool roof technology with a special emphasis on its suitability in the indian context. Impact of cool roofs on cooling system efficiency.

Roof reflectivity of 0 6 0 7 is optimum for london climate. Thermal comfort improves by 2 5 c but heating demand increases by 10. Highlights we studied the energy impact of a cool roof in an office building in london. The study includes experiments and thermal modelling.

With all the focus on green building these days the market is heating up with interest in cool roof technology. In today s market a cool roof is defined by the reflectivity and emissivity requirements set by either title. In light of this cool roofing is one of the main strategies used to prevent future occurrences of heat island effects cool roofing is an emergent and powerful technology used for temperature control of buildings and areas. 7 mitigating urban heat island using cool roof technologies pp.

What constitutes a cool roof. A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. A cool roof prevents heat absorption by reflecting the sun s heat and then emitting its radiation back into the atmosphere. A cool roof is a roof that reflects more sunlight and absorbs less heat than a standard roof lowering roof temperature and releasing less heat into the environment.

Cool roofs is a green building technology that is especially suited to the climate of the india. Roof temperature is rated via solar reflectance and thermal emittance with ratings ranging between 0 and 1. Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. Active cool roof effect.

Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. This article throws light on cool roof technology with a special emphasis on its suitability in the indian context. Advances in building energy research. This results in lower absorption of solar heat and a cooler roof.