Experimental and numerical investigation of the thermal inertia of sugar-beet-pulp/starch based bricks enhanced with phase change materials

Construction and Building Materials, Год журнала: 2023, Номер 383, С. 131367 - 131367

Опубликована: Апрель 18, 2023

Due to environmental concerns, bio-based materials are being increasingly investigated and used in buildings. In general, the density of these materials, thus their thermal inertia, is low. Thermal inertia can be beneficial for reducing energy use buildings by damping indoor temperature fluctuations or delaying incoming (solar) heat through façade. This study explores regular-sized bricks made a sugar-beet-pulp/starch mixture (BP/S), with 17 circular holes inside. The were filled either BP/S mixture, air, stabilised phase change material (PCM) gel salt-hydrate based PCM. brick was insulated on all sides but one. Two series experimental measurements performed: 1.) heating film placed at back (insulated) side heated until steady-state conditions reached; 2.) then passively cooled down ambient cutting power film. Numerical simulations also modelled using COMSOL Multiphysics® software. addition, run full wall out 1 layer 4 layers without PCM, exposed combination sinusoidal outdoor air fluctuation an imposed radiation flux surface, representing summer conditions. results show that which had slower response higher than air. PCM latent fusion led slowest highest inertia. Furthermore, calculated could accurately reproduce measurements. Applying thick walls (40 cm) however hardly affects amplitude time delay complete wall. addition therefore only effective thinner (10 cm).

Язык: Английский

Energy storage and hydrophobicity characteristics of cement-based materials containing paraffin-pumice at low air pressure

Journal of Energy Storage, Год журнала: 2023, Номер 77, С. 109973 - 109973

Опубликована: Дек. 15, 2023

Язык: Английский