火用
过热(电)
相变材料
环境科学
可用能
核工程
材料科学
工艺工程
环境工程
废物管理
热力学
工程类
相变
电气工程
物理
作者
K. Chopra,V.V. Tyagi,A.K. Pandey,Sakshi Popli,Gurjeet Singh,R. K. Sharma,Ahmet Sarı
标识
DOI:10.1016/j.renene.2022.01.059
摘要
The foremost challenges in heat pipe ETC are low heat transfer rate between absorber tube & heat pipe, overheating of heat pipes, and its inability to supply hot water during off-pick hours. The incorporation of latent heat storage material (LHSM) between absorber tube and heat pipe is the efficient solution to overcome these challenges. Also, along with energy and exergy analysis, economic & environmental analysis to be done to ensure whether utilization of LHSM with ETC system is viable for the commercial utility. Thereby, in this study, energy, exergy, economic & environmental analysis of stearic acid integrated ETC for two different modes (ETC/Mode-I & II) have been done and distinctly in comparison to the reference system. The daily energy efficiency of ETC/SA for ETC/Mode-I and ETC/Mode-II improved by 37–45 and 65–81% respectively, whereas, improvement in exergy efficiency was observed by 21–29 and 57–73% respectively. The positive value of NPV shows that investment in ETC/SA will be highly profitable. The ETC/SA mitigated CO2 emission in the range of 26–37 and 8–12 tCO2/lifetime based on energy and exergy approach respectively. Thus, ETC/SA working for ETC/Mode-II system was found to be more economical, highly energetic & exergetic efficient, and more environmentally friendly.
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