Fine Tuning for Energy Efficiency

Low solar factor, effective thermal insulation and high selectivity are the characteristics of two new types of solar control glazing by the Interpane Group (“ipasol shine 40/21” and “ipasol sky 50/26”).

Most of the solar heat stays outside (g-value of down to 22% as per EN 410). Both glasses also provide excellent thermal protection (Ug = 1.1 W/m2K as per EN 673). The fine tuned light and radiation values of the two new products improve the work and living environment and optimize the energy balance – in accordance with the European “Energy Performance of Buildings Directive (EPBD)”. As of 2006 this directive also takes into account cooling and artificial light.

With 22 percent, “ipasol shine” achieves an extremely low solar factor (g-value as per EN 410). It is thus the top Interpane product for all applications that require a particularly high protection from the sun. The coating also offers effective thermal insulation (Ug-value = 1.1 W/m2K as per EN 673). This reduces the year-round expenditure of energy for air conditioning systems. Another distinctive feature of the glass is its high selectivity: Considering the low g-value it provides sufficient light transmittance (tL = 40%). This reduces the necessity for artificial light and allows interaction with the environment. “ipasol shine” has a pleasant, slightly bluish outside reflection of 16 %.

“ipasol sky”: Plenty of light, excellent solar protection

“ipasol sky” combines its energy efficiency with relatively high light transmittance. Solar heat is, however, blocked (g-value = 27% as per EN 410). Optimum thermal insulation (Ug = 1.1 W/m2K as per EN 673) reduces heating costs in the winter. With a light transmittance (tL) of 50 %, which is relatively high for a solar control glass, “ipasol sky” also reduces the need for artificial light and provides “clear views”. In combination with a low degree of outside reflection and a slightly bluish colour, the glass is particularly suited for modern façade applications.

600450 Fine Tuning for Energy Efficiency
Date: 22 August 2005

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