TECHNOLOGY - IR REFLECTION TECHNOLOGY
Among all the components of Solar radiation transmitting to earth, almost 58 – 60% of the Solar radiations are of I R Radiations, which get absorbed by the structures, and radiation energy converts to Heat Energy heating up materials. The temperature of The Roofs, Walls, Roads, Buildings, industrial sheds, and tanks; all built structures (with less reflectivity & emissivity) exposed to the Sun gets elevated transmitting the heat indoors and emitting the heat of 60 to 75 °C in the atmosphere.
Any material with high IR Reflective properties will help to reflect the IR radiations coming from Sun and STOP heating of the substrate- Roofs/ Walls/ Roads/Non-Roof Areas and reflect the radiations away from a building, reducing the surface temperatures, leading to a reduction in heat ingress indoors and emission of heat in the atmosphere.
A high thermal emittance also plays a role, particularly in climates that are warm and sunny. Thermal emittance is the ability to radiate absorbed, or non-reflected solar or heat energy. Together, these properties help any substrate to generate less heat and roofs stay up to 20–28 °C cooler & walls stay up to 10 °C cooler than conventional materials during peak summer weather. The measure for a good Cool Surface material is the better value of SRI, more than 100.
Temprature Difference Chart
Application Areas
Roof
Pavement
Wall
Importance of SRI Coating
The intense urbanization is contributing to the development of infrastructure and concrete jungles with elevated surface temperatures up to 70 °C high. The urban regions thus experience warmer air temperatures & which contributes to the increased UHI-Urban Heat Island.
When the ambient temperature is 45 °C the surface temperature of the metal substrate is increased to 80 °C & the temperature of the cement surface is increased to 65-70 °C.
Increased solar gain, heat stress, and hot climatic conditions prevail through most of the year, expanding middle class, growing construction sector, and increasing per capita income provokes the desperate requirement for thermal comfort and that has obvious visibility in the increased demand of purchase of “thermal comfort” in form of Air Conditioners – the most prominent positive electricity consumer!
The use of a cool roof represents a promising, reliable, and environmentally friendly passive strategy, one which has the potential to contribute significantly to mitigating UHI. Adopting Cool Surfaces, by raising the albedo (solar reflectance) of a building’s roof reduces unwanted solar heat gain with very good benefits in solar-dominant countries. This saves electricity and lowers peak power demand by decreasing the need for air conditioning and also curbing pollution. It can also cool the outside air, which can mitigate the urban heat island effect and also improve air quality by slowing the reactions that produce smog.
Cool surfaces thus can reduce UHI intensity and building cooling loads, lowering demand for electricity and greenhouse gas emissions from power plants. Various criteria and indices are used to assess the effectiveness of cool surfaces, including solar reflectance index (SRI) and variation in air temperatures.
Our Solutions
Samkiti
Cooler roofs & walls mean a Longer Life of roofs, walls with crack prevention & contribution to indoor cooling!
Panache has been working since its inception on establishing the High SRI coatings & systems to meet the application challenges and provide sustainable performance maintaining the aged SRI values, taking into consideration of the Indian atmosphere & the construction practices.
Application of Cool Tops reduces the metal surface temperature by 25 °C & the cement surface temperature by 18-20 °C; increasing a lot of thermal comforts indoors & reducing in HVAC load! Cool Tops & Cool Wrap range of Panache has the potential to reduce the city temperature by 2 to 3 °C (as stated by GCCA; LBNL); Adopting Cool Tops is one of the most viable ways to combat Climate Change & Global Warming impact!
Panache High SRI Coatings can be applied on any type of substrate that is exposed to solar radiation & the coating reflects the IR Radiation as such & has high emissivity with high SRI or Albedo.