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Solid wood impregnated with a bio-based phase change material for low temperature energy storage in building application

Nazari, Meysam and Jebrane, Mohamed and Terziev, Nasko (2022). Solid wood impregnated with a bio-based phase change material for low temperature energy storage in building application. Journal of Thermal Analysis and Calorimetry. 147 :19 , 10677-10692
[Research article]

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Abstract

Wood impregnated with a multicomponent mixture of fatty acids as a bio-based phase change material (BPCM) to improve its thermal characteristics was studied. The studied wood/BPCM composites can be used as internal elements in buildings for energy storage. Scots pine and beech sapwood were impregnated with a multicomponent mixture of linoleic acid and coconut oil fatty acids at a ratio of 20:80. Leakage test was conducted and revealed that the maximum leakage for pine and beech were 9 and 8%, respectively. Light microscopy was employed to demonstrate the distribution of the BPCM in the wood structure. Rays in both pine and beech wood served as pathways for impregnation of the BPCM to partly fill the tracheid lumens (pine) and vessels (beech). Thermal characterization of the studied samples employed T-history and DSC methods, concluding that the impregnated wood had significant thermal mass, ability to store excessive energy in terms of latent heat and keep the temperature constant for long time. The specific heat capacity of the impregnated samples was 4-5 J g(-1) K-1 i.e., higher than that of the untreated control samples of ca. 2 J g(-1) K-1. The thermal conductivity of the samples before and after the impregnation was measured using heat flow meter method and the results showed that the untreated beech wood had higher thermal conductivity compared to pine and the parameter improved when the cell lumens were filled with the BPCM. Scots pine wood with to 80% mass percentage gain (MPG) after impregnation demonstrated an increment in thermal conductivity of 33% while Scots pine and beech with 43 and 38% MPG demonstrated an increase of the conductivity with 8 and 11%, respectively.

Authors/Creators:Nazari, Meysam and Jebrane, Mohamed and Terziev, Nasko
Title:Solid wood impregnated with a bio-based phase change material for low temperature energy storage in building application
Series Name/Journal:Journal of Thermal Analysis and Calorimetry
Year of publishing :2022
Volume:147
Number:19
Page range:10677-10692
Number of Pages:16
Publisher:SPRINGER
ISSN:1388-6150
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Wood Science
Keywords:Beech, Bio-based PCMs, Building applications, Energy storage, Impregnation, Leaching, PCM distribution, Scots pine, Thermal characterization
URN:NBN:urn:nbn:se:slu:epsilon-p-116569
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116569
Additional ID:
Type of IDID
DOI10.1007/s10973-022-11285-9
Web of Science (WoS)000769848600003
Scopus2-s2.0-85126377247
ID Code:28776
Faculty:S - Faculty of Forest Sciences
Department:(S) > Department of Forest Biomaterials and Technology
Deposited By: SLUpub Connector
Deposited On:05 Sep 2022 11:27
Metadata Last Modified:12 Sep 2022 08:20

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