Phase Change Material Freezing in an Energy Storage Module for a Micro Environmental Control System

Autor:	Mustafa Koz, H. Ezzat Khalifa
Rok vydání:	2018
Předmět:	Fluid Flow and Transfer Processes 020401 chemical engineering 020209 energy 0202 electrical engineering electronic engineering information engineering General Engineering General Materials Science 02 engineering and technology 0204 chemical engineering Condensed Matter Physics
Zdroj:	Journal of Thermal Science and Engineering Applications. 10
ISSN:	1948-5093 1948-5085
DOI:	10.1115/1.4040697
Popis:	This study analyzes phase change material (PCM) freezing process in a novel latent heat storage device (LHSD). Heat is removed from the PCM with an embedded evaporator. A mathematical model of freezing in a finite-thickness PCM slab is presented. An experimentally validated reduced-order model (ROM) based on the mathematical model was developed to analyze the heat transfer between the freezing PCM and an evaporating refrigerant flowing inside a flat, microchannel tube coil embedded in the PCM. A detailed finite element model (FEM) of the same device was also developed and employed to verify the validity of the ROM over a wider range of conditions. The freezing times and total “cooling” stored in the PCM computed by the ROM agree very well with those computed by the detailed FEM. The ROM executes in ∼1 min for a full heat exchanger, compared with more than 10 h for the FEM, making the former much more practical for use in parametric analysis and optimization of design alternatives.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4298016769f1a36ab83100541afd45bd https://doi.org/10.1115/1.4040697 Zobrazit plný text záznamu