Impact of nano‐enhanced phase change material on thermal performance of building envelope and energy consumption

International Journal of Energy ResearchEarly View SPECIAL ISSUE RESEARCH ARTICLE Impact of nano-enhanced phase change material on thermal performance of building envelope and energy consumption Ekrem Tunçbilek, Ekrem Tunçbilek Engineering Faculty, Mechanical Engineering Department, Kocaeli University, Umuttepe Campus, Kocaeli, TurkeySearch for more papers by this authorMüslüm Arıcı, Corresponding Author Müslüm Arıcı muslumarici@gmail.com Engineering Faculty, Mechanical Engineering Department, Kocaeli University, Umuttepe Campus, Kocaeli, Turkey Correspondence Müslüm Arıcı, Engineering Faculty, Mechanical Engineering Department, Kocaeli University, Kocaeli, Turkey. Email: muslumarici@gmail.comSearch for more papers by this authorMichal Krajčík, Michal Krajčík Faculty of Civil Engineering, Slovak University of Technology, Bratislava, SlovakiaSearch for more papers by this authorYanru Li, Yanru Li College of Architecture and Urban-Rural Planning, Sichuan Agricultural University, Chengdu, ChinaSearch for more papers by this authorMišo Jurčević, Mišo Jurčević University of Split, FESB, Split, CroatiaSearch for more papers by this authorSandro Nižetić, Sandro Nižetić orcid.org/0000-0001-6896-4605 University of Split, FESB, Split, CroatiaSearch for more papers by this author Ekrem Tunçbilek, Ekrem Tunçbilek Engineering Faculty, Mechanical Engineering Department, Kocaeli University, Umuttepe Campus, Kocaeli, TurkeySearch for more papers by this authorMüslüm Arıcı, Corresponding Author Müslüm Arıcı muslumarici@gmail.com Engineering Faculty, Mechanical Engineering Department, Kocaeli University, Umuttepe Campus, Kocaeli, Turkey Correspondence Müslüm Arıcı, Engineering Faculty, Mechanical Engineering Department, Kocaeli University, Kocaeli, Turkey. Email: muslumarici@gmail.comSearch for more papers by this authorMichal Krajčík, Michal Krajčík Faculty of Civil Engineering, Slovak University of Technology, Bratislava, SlovakiaSearch for more papers by this authorYanru Li, Yanru Li College of Architecture and Urban-Rural Planning, Sichuan Agricultural University, Chengdu, ChinaSearch for more papers by this authorMišo Jurčević, Mišo Jurčević University of Split, FESB, Split, CroatiaSearch for more papers by this authorSandro Nižetić, Sandro Nižetić orcid.org/0000-0001-6896-4605 University of Split, FESB, Split, CroatiaSearch for more papers by this author First published: 09 June 2022 https://doi.org/10.1002/er.8200Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Summary Using phase change material (PCM) in the building envelope can provide energy saving advantages by shaving peak heating and cooling loads. However, the poor thermal conductivity of PCMs limits their application and potential benefits because of inadequate heat storage/release rates. Increasing effective thermal conductivity by adding metal nanoparticles with high thermal conductivity to PCM (NPCM) could be a promising method to accelerate the phase change process, thereby exploiting latent heat more effectively. The potential impact of the utilization of NPCM technology has not yet been adequately explored for building external walls. This study aimed to reveal whether the dispersal of highly conductive nanoparticles in PCM in external building walls helps conserve energy or not. PCM enriched with aluminium oxide nanoparticles (Al2O3) with a content of 1, 2, and 3 vol% was used. The outputs showed that the nanoparticle addition decreased the energy-saving performance of PCM since the reduction in the thermal resistance and latent heat capacity caused by the nanoparticles loading was more profound than the enhancement provided by the improvement of latent heat exploitation caused by the increased thermal conductivity. For example, heating energy saving was reduced by 0.6% when a 3-cm PCM with 1 vol% Al2O3 was used instead of a pure PCM. The negative impact increased to 1.7% by increasing the nanoparticle concentration to 3 vol%. Thus, augmenting the thermal conductivity for higher latent heat activation by adding nanoparticles was not beneficial for building wall applications in a hot-summer Mediterranean climate. Highlights Effect of nanoparticle-enhanced PCM on building energy saving. PCM with Al2O3 content of 0, 1, 2, and 3 vol% embedded in external wall. Yearly energy saving of 20.7% was achieved with pure PCM in the wall. Adding 3 vol% Al2O3 to PCM reduced heating energy saving by 1.7%. Negative effect on energy saving increased with increasing nanoparticle concentration. Open Research DATA AVAILABILITY STATEMENT Data sharing is not applicable to this article as no new data were created or analyzed in this study. Early ViewOnline Version of Record before inclusion in an issue RelatedInformation