Development of waste based biochar/lauryl alcohol as new shape-stable composite phase change material and its solar thermo-regulative performance in a building material

Basit Öğe Kaydı
dc.authorid0000-0001-6978-2811
dc.contributor.authorTimurkaynak, Erdogan
dc.contributor.authorSari, Ahmet
dc.contributor.authorNas, Memduh
dc.contributor.authorGencel, Osman
dc.contributor.authorUstaoglu, Abid
dc.contributor.authorArslanoglu, Hasan
dc.contributor.authorTyagi, V. V.
dc.date.accessioned2026-02-03T12:02:42Z
dc.date.available2026-02-03T12:02:42Z
dc.date.issued2026
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe integration of phase change materials (PCMs) with biomass-derived biochar offers a sustainable and energy-efficient approach for developing composites with enhanced thermal functionality. In this study, a leakage-resistant composite was prepared by impregnating olive waste pulp (OWP)-based biochar (BC) with 45 wt% lauryl alcohol (LOH). The OWP-BC/LOH composite was incorporated into concrete by partially replacing sand at 10 %, 15 %, and 20 % to produce advanced materials for building energy conservation. Extensive tests covering morphological, physical, mechanical, thermal stability, thermal energy storage (TES), and solar thermoregulation were conducted. The compressive strengths of TES-integrated concretes were 45.31 MPa, 37.94 MPa, and 28.48 MPa for 10 %, 15 %, and 20 % replacements, respectively. While lower than the control, these values remain acceptable considering the improved thermal regulation. At 20 % replacement, apparent porosity, water absorption, and dry unit weight were measured as 23.3 %, 14.91 %, and 1869.11 kg/m3, respectively. FTIR analysis confirmed strong interactions between OWP-BC and LOH. DSC results revealed a melting point of 20.18 degrees C with a latent heat capacity of 111.9 J/g, maintaining stability after 600 heating-cooling cycles. TGA analysis indicated that the working temperature range was well below the onset of thermal degradation, ensuring long-term durability. Thermal conductivity decreased by 13 %, reaching 0.93 W/m & sdot;K. Furthermore, solar thermoregulation tests showed that 20 % OWP-BC/LOH concrete provided effective daytime cooling and nighttime heating. The use of OWP-BC/LOH composites could potentially reduce annual building energy consumption up to 27 kWh m-2 y-1 and lower CO2 emissions by
dc.description.sponsorshipScientific research commission of Karadeniz Technical University [FDK-2025-16269]
dc.description.sponsorshipDr. A. Sar & imath; also knowledge to the scientific research commission of Karadeniz Technical University due to funding of this work (Project number: FDK-2025-16269) .
dc.identifier.doi10.1016/j.jobe.2025.114890
dc.identifier.issn2352-7102
dc.identifier.scopus2-s2.0-105024755098
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jobe.2025.114890
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34832
dc.identifier.volume118
dc.identifier.wosWOS:001643170300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofJournal of Building Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectOlive waste pulp
dc.subjectBiochar
dc.subjectPhase change material
dc.subjectThermal regulation
dc.subjectEnergy-efficient buildings
dc.titleDevelopment of waste based biochar/lauryl alcohol as new shape-stable composite phase change material and its solar thermo-regulative performance in a building material
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu