气候变化领域集成服务门户(CCPortal): Experimental investigation of eutectic PCM incorporated clay brick for thermal management of building envelope

CCPortal

DOI	10.1016/j.est.2024.110838
	Experimental investigation of eutectic PCM incorporated clay brick for thermal management of building envelope
	Taj, Samad Ali; Khalid, Waqas; Nazir, Hassan; Khan, Aamir; Sajid, Muhammad; Waqas, Adeel; Hussain, Arsalan; Ali, Majid; Zaki, Sheikh Ahmad
发表日期	2024
ISSN	2352-152X
EISSN	2352-1538
起始页码	84
卷号	84
英文摘要	Global warming is mainly triggered by the consumption of fossil fuels and the phenomenon has shaken the global community in the form of climate change resulting in frequent heat waves leading to drought and catastrophic wildfires. At present increase in global average temperature is further increasing energy demands for maintaining thermal comfort inside the building envelope. In such circumstances building materials with improved thermal performance can reduce thermal load inside the building envelope. The study aimed to improve the thermal performance of clay brick, which is a key building material, by incorporating organic eutectic phase change materials as latent heat thermal energy storage medium. Considering the average hot summer temperature 34-37 degrees C in Islamabad, Pakistan, Lauric acid and Palmitic acid were selected for preparation of eutectic mixtures possessing a melting temperature range of 33-38 degrees C. Differential Scanning Calorimetry was performed to determine thermophysical properties of pristine material and prepared eutectic mixtures such as melting-solidification characteristics and latent heat. Thermogravimetric analysis was also performed to determine the thermal stability of the studied phase change materials. Two separate test compartments were designed and developed to analyse the reduction in temperature and respective thermal load. One test compartment comprised of PCM-incorporated clay bricks, while the other with clay brick were made and investigated under direct sunlight and in controlled conditions, respectively. Considering the charging and discharging of PCM, both heating and cooling temperature profiles of individual bricks and compartments were examined by incorporating multiple k-type thermocouples. Structural strength and compressive strength analysis of modified brick was also conducted. A decrease of 4-5.5 degrees C in the inside temperature of the compartment, similar to 32 % reduction in thermal amplitude inside PCM compartment, decrement factor of 0.91 for PCM incorporated brick and a maximum time lag of 150 min was observed. The overall reduction in heat flux inside PCM incorporated bricks compartment was similar to 25-30 %.
英文关键词	Thermal energy storage; Thermal management of building; Eutectic phase change material; Clay brick
语种	英语
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:001186043400001
来源期刊	JOURNAL OF ENERGY STORAGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304767
作者单位	National University of Sciences & Technology - Pakistan; National University of Sciences & Technology - Pakistan; COMSATS University Islamabad (CUI); Universiti Teknologi Malaysia
推荐引用方式 GB/T 7714	Taj, Samad Ali,Khalid, Waqas,Nazir, Hassan,et al. Experimental investigation of eutectic PCM incorporated clay brick for thermal management of building envelope[J],2024,84.
APA	Taj, Samad Ali.,Khalid, Waqas.,Nazir, Hassan.,Khan, Aamir.,Sajid, Muhammad.,...&Zaki, Sheikh Ahmad.(2024).Experimental investigation of eutectic PCM incorporated clay brick for thermal management of building envelope.JOURNAL OF ENERGY STORAGE,84.
MLA	Taj, Samad Ali,et al."Experimental investigation of eutectic PCM incorporated clay brick for thermal management of building envelope".JOURNAL OF ENERGY STORAGE 84(2024).