Switchable Thermal Insulation for Increasing Energy Efficiency of Building FaÇades

Römer, Constantin, Weinläder, H, Weismann, S, Vidi, S, Wachtel, J

EuroSun 2016 · Palma de Mallorca, Spain · 2016-10-11
Published by International Solar Energy Society (ISES)
DOI: 10.18086/eurosun.2016.01.04

Abstract

A Switchable Thermal Insulation (STI) for using solar energy in winter was developed and evaluated at a test façade. As opposite to STI developed in previous research which was sealed by expensive and thermally inefficient stainless steel sheets, the new device with a switching function based on hydrogen and getter materials was sealed by high barrier foils. The results show a high energy input of about 67 kWh m- by using solar energy at the façade during one heating period. With a combination of STI and a massive wall the captured solar heat is transported through the façade with a time offset. Thus, nightly inside wall heating is possible.

Keywords

Building façade, Switchable thermal insulation, Vacuum insulation panel, Hydrogen getters, High barrier foil, Wall heating

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