Determination of the Effective Thermal Conductivity of Aerogel-based Coating Mortars Using Numerical Simulations- Random Packing
Paper i proceeding, 2023

Aerogel-based coating mortars have declared thermal conductivities of 0.03-0.05 W/(m∙K), similar to those of conventional thermal insulation materials. Due to the high porosity and fragility of aerogel granules, the material obtains a reduced mechanical strength compared to conventional mortars. Recently, there has been a large research effort on developing new mixtures with improved thermal and mechanical properties. This paper presents and evaluates two-dimensional numerical simulations, based on the random packing technique, as an alternative method to laboratory measurements in predicting the effective thermal conductivity of these mortars. Experimental data from the literature, on thermal conductivity of aerogel-based coating mortars containing 50-90 vol- % aerogels were used to validate the simulation results. In this preliminary validation study, a relative error of 6-10 % was observed. Future work can focus on improving the accuracy and including the prediction of mechanical properties in the suggested model.

Aerogel

Random packing technique

Coating mortar

Effective thermal conductivity

Numerical simulations

Författare

Ali Naman Karim

Chalmers, Arkitektur och samhällsbyggnadsteknik, Byggnadsteknologi

Carl-Eric Hagentoft

Chalmers, Arkitektur och samhällsbyggnadsteknik, Byggnadsteknologi

Environmental Science and Engineering (Subseries: Environmental Science)

18635520 (ISSN)

757-765
9789811998218 (ISBN)

5th International Conference on Building Energy and Environment, COBEE 2022
Montreal, Canada,

Högisolerande puts för hållbar renovering

Energimyndigheten (P2022-00872), 2022-11-01 -- 2023-12-31.

Ämneskategorier

Samhällsbyggnadsteknik

Annan samhällsbyggnadsteknik

Husbyggnad

DOI

10.1007/978-981-19-9822-5_81

Mer information

Senast uppdaterat

2024-04-25