Cool Roof Technology Abstract

Historically cool roofs have been either white.

Cool roof technology abstract.

Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. Active cool roof effect. 7 mitigating urban heat island using cool roof technologies pp. Today tpo makes up over 50 of the single ply market.

It is a relatively cheap option with substantial benefits. A cool roof is a roofing system that delivers higher solar reflectance the ability to reflect the visible infrared and ultraviolet wavelengths of the sun reducing heat transfer to the building and higher thermal emittance the ability to radiate absorbed or non reflected solar energy than standard designed roofing products. Studies have isolated and evaluated the effects of climate surface reflectivity and roof insulation on energy savings thermal load mitigation and also ameliorating the urban heat. The study includes experiments and thermal modelling.

For example epdm was the most popular single ply membrane in the industry in 2003. Roof reflectivity of 0 6 0 7 is optimum for london climate. Highly reflective roofing systems have been analyzed over several decades to evaluate their ability to meet sustainability goals including reducing building energy consumption and mitigating the urban heat island. Commercial buildings are benefiting from cool roof savings throughout the usa even in northern climates and that is fundamentally shifting the roofing marketplace.

Impact of cool roofs on cooling system efficiency. As a general guideline if a low slope roofing system meets california title 24 requirements it will also meet the leed and energy. Advances in building energy research. Cool roofs are changing the roofing industry.

Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. Overall energy demand reduces between 1 and 8 5 relative to an albedo of 0 1. A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. 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.

When working to meet local environmental mandates the priority is to choose a cool roof that meets regional and or green rating council requirements. A cool roof prevents heat absorption by reflecting the sun s heat and then emitting its radiation back into the atmosphere. Highlights we studied the energy impact of a cool roof in an office building in london. The cool roof rating council was created in 1998 to develop accurate and credible methods for evaluating and labeling the solar reflectance and thermal emittance radiative properties of roofing products and to disseminate the information to all interested parties.

Cool roofs is a green building technology that is especially suited to the climate of the india.