Impregnation of wood with a paraffinic phase change material for increasing heat capacity

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung


In this contribution, the impregnation of wood with a paraffinic phase change material (PCM) is investigated, specifically to increase the heat capacity of solid wood, which significantly influences the thermal inertia when used in buildings. Four wood species (beech, poplar, oak and spruce) were impregnated with different pressure processes in an autoclave. For poplar, up to 480 kg of PCM per m³ of wood was deposited. For beech and spruce, also more than 200 kg of PCM per m³ of wood was achieved. However, oak was hard to impregnate and only about 100 kg of PCM per m³ was deposited. Leakage, which is undesired, occurred for all the wood species, especially for beech, but could be significantly reduced to less than 10% by increasing the viscosity of the PCM. The heat capacity was increased by one order of magnitude compared to clear wood, as measurements with differential scanning calorimetry showed. Simulations with an analytical model demonstrate the potential for damping temperature amplitudes in buildings in the summer month when applying PCM.


FachzeitschriftWood material science & engineering
PublikationsstatusVeröffentlicht - 25 Okt. 2022

Externe IDs

Scopus 85141189514
Mendeley bdf6dda4-bb37-3b5b-8d68-ccaa84a6c602
ORCID /0000-0002-5948-2097/work/141543561


Forschungsprofillinien der TU Dresden

Ziele für nachhaltige Entwicklung

ASJC Scopus Sachgebiete


  • Autoclave, impregnation, latent heat, leakage, phase change material, temperature damping