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Title: Numerical study on thermal performance characteristics of a cascaded latent heat storage unit
Author: Wang YiFei(王艺斐)1, 2; Wang, Liang1; Chen, Haisheng1; Xie, Ningning1; Yang, Zheng1, 2; Chai, Lei1
Source: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
Issued Date: 2016-02-01
Volume: 230, Issue:1, Pages:126-137
Keyword: Thermal energy storage ; phase-change material ; latent heat ; numerical simulation ; enthalpy method
DOI: 10.1177/0957650915604757
DOC Type: Article
English Abstract: This study presents a numerical investigation on a cascaded shell-and-tube 3PCMs latent heat thermal storage unit filled with three types of phase-change materials namely, C24H50, C21H44, and C18H38. The mathematical model is based on the enthalpy method and considers the effect of the natural convection of liquid phase-change material during melting. The transient heat transfer and thermal storage characteristic of the 3PCMs unit are analyzed and compared with those of a 1PCM unit that utilizes C24H50. The influences of heat transfer fluid flow rate and inlet temperature on the efficiency, accumulated energy, and exergy of the latent heat thermal storage unit are studied. Results show that the 3PCMs unit can improve the heat transfer rate greatly and shorten the heat storage time effectively, as much as 58% more energy can be stored than the 1PCM unit at the same charging time. The increase of both inlet temperature and flow rate of the heat transfer fluid will lead to a shorter charging time, whereas the advantage of the 3PCMs unit on storage performance over the 1PCM unit becomes more insignificant.
WOS Headings: Science & Technology ; Technology
WOS Subject: Engineering, Mechanical
WOS Subject Extended: Engineering
WOS Keyword Plus: PHASE-CHANGE MATERIALS ; CHANGE ENERGY-STORAGE ; DIFFERENT MELTING TEMPERATURES ; EXERGY ANALYSIS ; THERMODYNAMIC OPTIMIZATION ; MULTIPLE PCMS ; SYSTEM ; CONVECTION ; DESIGN ; MODULE
Indexed Type: SCI
Funder: Key Project of Chinese National Programs for Fundamental Research and Development (973 program)(2015CB251300) ; China Natural Science Foundation(51306179)
Language: 英语
WOS ID: WOS:000368805500010
Citation statistics:
Content Type: 期刊论文
URI: http://ir.etp.ac.cn/handle/311046/112351
Appears in Collections:中国科学院工程热物理所(论文库)_期刊论文(SCI)

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description.institution: 1.Chinese Acad Sci, Inst Engn Thermophys, 11 4th Ring Rd, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
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