Spectrally Selective Roofing

Sealed roofs ventilation systems o integrated power roofs pv solar thermal control etc.

Spectrally selective roofing. The results under given conditions show that the rc module with a spectrally selective cover and a spectrally selective emitter sc se reaches a net rc power of 62 4 w m 2 when the solar radiation is 800 w m 2 which is about 1 8 times that of the typical rc module with a spectrally non selective cover and a spectrally selective emitter n sc. That s why armstrong replacement windows feature high performance spectrally selective glass to allow natural light into your home while protecting it from harmful uv rays. Spectrally selective roofing materials o innovative roofing systems e g. Night sky cooling potential o cool night sky.

At armstrong we have always aimed to provide our clients with the best and latest technology to protect their homes as well as the environment. In one sense white building products are already spectrally selective in. Spectrally selective window glazing is a suitable addition for both warm and cool climates. Heat stress in hot summer brings serious thermal diseases thus adversely influencing the economy and human health of the entire society.

A window glass replacement with spectrally selective coatings is especially beneficial for homeowners living in warmer climates because they help keep the home cool without. Additionally homeowners often appreciate the virtually clear appearance of the window glazing as it allows for greater daylight and brighter more open views to the outside. Spectral distribution of solar radiation. Spectrally selective surfaces can reduce the solar absorptance for a given roof colour.

Kynar roof coatings using spectrally selective pigments from ferro corporation allow classic roofs to produce aluminum and steel shingles in several dark colors that meet energy star minimums with solar reflectances better than white asphalt shingles. The implication is that a spectrally selective roof system which is primarily reflective in the nir and or uv portions of the spectrum will automatically compromise performance relative to a high uniform reflectance. Tests indi cate that the colors will sharply reduce solar heat gain through the roof. Roof colour and glare.

Roofing manufacturers have been advised to provide a solar absorptance value for the colour you choose to enable certifier to match it against the range specified in the commitments on the basix certificate.