Thermal performance optimization of free cooling systems using enhanced latent heat thermal storage unit

被引：38
|
作者：
Mosaffa, A. H. [1 ]
Ferreira, C. A. Infante [2 ]
Rosen, M. A. [3 ]
Talati, F. [4 ]
机构：
[1] Azarbaijan Shahid Madani Univ, Dept Mech Engn, Tabriz Azarshahr, Tabriz, Iran
[2] Delft Univ Technol, Dept Proc & Energy, NL-2628 CA Delft, Netherlands
[3] Univ Ontario, Inst Technol, Fac Engn & Appl Sci, Oshawa, ON L1H 7K4, Canada
[4] Univ Tabriz, Fac Mech Engn, Tabriz, Iran
来源：
APPLIED THERMAL ENGINEERING | 2013年 / 59卷 / 1-2期
关键词：
Phase change material; Latent heat thermal storage; Free cooling; Energy storage effectiveness; Coefficient of performance; PHASE-CHANGE MATERIALS; CHANGE MATERIAL PCM; AIR-CONDITIONING SYSTEMS; ENERGY-STORAGE; BUILDINGS; SOLIDIFICATION; DESIGN; MODEL; COMPOSITE; MATRIX;
D O I：
10.1016/j.applthermaleng.2013.06.011
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Free cooling systems use phase change materials (PCMs) to store outdoor cold during the night and to supply it to the indoor environment during the day when the need for cooling increases. This work presents a numerical investigation of the performance enhancement of a free cooling system using a latent heat thermal storage (LHTS) unit employing multiple PCMs. The PCM storage system consists of several flat PCM slabs arranged in layers with a passage in between for the heat transfer fluid (HTF). Using the effective heat capacity method, the process of melting and solidification of the PCM is predicted. The energy storage effectiveness (as a new performance parameter for LHTS units) and coefficient of performance (COP) of the system are calculated. These two performance indicators are used to optimize the system. The suitability of both methods for optimization purpose is discussed indicating the superiority of the energy based (COP) method. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：473 / 479
页数：7
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