Effect from a Variable U-Value in Adaptive Building Components with Controlled Internal Air Pressure
Paper i proceeding, 2015

A variable U-value would be beneficial for a buildings thermal performance. One way to switch the U-value of a wall, insulated with nano-porous material, is to change the internal pressure of the insulation This paper present thermal conductivity measurements showing a possible variation around of 3 times for a fumed silica and less than 2 times for an aerogel blanket when the pressure was varied between 1 and 100 kPa. The variation factor of 3 was used in building energy simulation of a Swedish office showing that a U-value which can be varied within that range can give a significant reduction energy demand. Especially when energy used for cooling is weighted as worse than energy used for heating.

Switchable U-value

Energy balance

Adaptive façades

Adaptive U-value

Thermal Conductivity

Variable U-value

Författare

Axel Berge

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

Carl-Eric Hagentoft

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

Paula Wahlgren

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

Bijan Adl-Zarrabi

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

Energy Procedia

18766102 (ISSN)

Vol. 78 376-381

Styrkeområden

Building Futures

Ämneskategorier

Husbyggnad

DOI

10.1016/j.egypro.2015.11.677

Mer information

Skapat

2017-10-07