Assessment of the Thermal Performance of Non-residential Building Envelope Prototype Specimens Insulated with Porous Cementitious Nanocomposites Containing Phase Change Materials, Using a Hot Box Apparatus

IF 2.5 4区 工程技术 Q3 CHEMISTRY, PHYSICAL
Benjamin A. Tourn, Christina Strunz, Juan C. Álvarez Hostos, Cornelia Stark, Barbara Klemczak
{"title":"Assessment of the Thermal Performance of Non-residential Building Envelope Prototype Specimens Insulated with Porous Cementitious Nanocomposites Containing Phase Change Materials, Using a Hot Box Apparatus","authors":"Benjamin A. Tourn,&nbsp;Christina Strunz,&nbsp;Juan C. Álvarez Hostos,&nbsp;Cornelia Stark,&nbsp;Barbara Klemczak","doi":"10.1007/s10765-025-03537-1","DOIUrl":null,"url":null,"abstract":"<div><p>The NRG-STORAGE project aimed to develop innovative, energy-efficient cementitious foams (NRG-Foams) as a sustainable alternative to conventional insulation materials for non-residential building envelopes. NRG-Foams were designed to balance thermal insulation and heat storage capacity while maintaining volume stability and mechanical integrity. The base material consists of a highly conductive cement paste with air bubbles that provide insulating properties. Enhanced heat storage performance is achieved by incorporating microencapsulated phase change materials (MPCM). This study evaluates the thermal performance of wall prototypes constructed from masonry bricks or concrete, insulated with NRG-Foam panels containing MPCM volume fractions ranging from 0% to 20%. Key thermal indicators—including thermal transmittance, decrement factor, time lag, periodic thermal transmittance, energy savings, and dynamic thermal resistance—were assessed using a NETZSCH HotBox Test Chamber TDW 4040 under both steady-state and dynamic conditions. While thermal performance improved progressively with increasing MPCM content, reaching a maximum at 20% MPCM, it did not surpass the performance of specimens with standard insulation materials. Nevertheless, the findings highlight significant potential for further optimization, particularly with higher MPCM volume fractions. Such enhancements could enable NRG-Foams to outperform conventional insulation materials, especially in long-term thermal analyses conducted under more realistic conditions. In addition, the influence of issues encountered during the experimental procedure on the thermal performance assessment of NRG-Foams is also discussed.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"46 5","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Thermophysics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10765-025-03537-1","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

The NRG-STORAGE project aimed to develop innovative, energy-efficient cementitious foams (NRG-Foams) as a sustainable alternative to conventional insulation materials for non-residential building envelopes. NRG-Foams were designed to balance thermal insulation and heat storage capacity while maintaining volume stability and mechanical integrity. The base material consists of a highly conductive cement paste with air bubbles that provide insulating properties. Enhanced heat storage performance is achieved by incorporating microencapsulated phase change materials (MPCM). This study evaluates the thermal performance of wall prototypes constructed from masonry bricks or concrete, insulated with NRG-Foam panels containing MPCM volume fractions ranging from 0% to 20%. Key thermal indicators—including thermal transmittance, decrement factor, time lag, periodic thermal transmittance, energy savings, and dynamic thermal resistance—were assessed using a NETZSCH HotBox Test Chamber TDW 4040 under both steady-state and dynamic conditions. While thermal performance improved progressively with increasing MPCM content, reaching a maximum at 20% MPCM, it did not surpass the performance of specimens with standard insulation materials. Nevertheless, the findings highlight significant potential for further optimization, particularly with higher MPCM volume fractions. Such enhancements could enable NRG-Foams to outperform conventional insulation materials, especially in long-term thermal analyses conducted under more realistic conditions. In addition, the influence of issues encountered during the experimental procedure on the thermal performance assessment of NRG-Foams is also discussed.

Abstract Image

求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
4.10
自引率
9.10%
发文量
179
审稿时长
5 months
期刊介绍: International Journal of Thermophysics serves as an international medium for the publication of papers in thermophysics, assisting both generators and users of thermophysical properties data. This distinguished journal publishes both experimental and theoretical papers on thermophysical properties of matter in the liquid, gaseous, and solid states (including soft matter, biofluids, and nano- and bio-materials), on instrumentation and techniques leading to their measurement, and on computer studies of model and related systems. Studies in all ranges of temperature, pressure, wavelength, and other relevant variables are included.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信