Parametric studies on packed bed storage unit filled with PCM encapsulated spherical containers for low temperature solar air heating applications

被引：105
作者：
Karthikeyan, S. [1 ]
Solomon, G. Ravikumar [2 ]
Kumaresan, V. [3 ]
Velraj, R. [3 ]
机构：
[1] Indira Inst Engn & Technol, Dept Mech Engn, Thiruvallur 631203, India
[2] Hindustan Univ, Dept Mech Engn, Madras 603103, Tamil Nadu, India
[3] Anna Univ, Dept Mech Engn, Madras 600025, Tamil Nadu, India
来源：
ENERGY CONVERSION AND MANAGEMENT | 2014年 / 78卷
关键词：
Latent heat storage; Solar air heating; Phase change material; Packed bed storage; Enthalpy modeling; PHASE-CHANGE MATERIAL; ENERGY-STORAGE; THERMAL STORAGE; COOL STORAGE; SYSTEM; SOLIDIFICATION; CAPSULES; ENHANCEMENT; PERFORMANCE; NANOFLUIDS;
D O I：
10.1016/j.enconman.2013.10.042
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The focus of the present work is to perform parametric studies on the performance of a packed bed storage unit filled with phase change material (PCM) encapsulated spherical containers, suitable for low temperature solar air heating applications. A parametric analysis was carried out using the validated enthalpy based numerical model that considers the thermal gradient inside the PCM container. The results of simulation analysis showed that the size of the PCM ball, fluid inlet temperature and the mass flow rate of the heat transfer fluid (HTF) influenced respectively the heat transfer area in the packed bed, temperature difference between the HTF and PCM and the surface convective heat transfer coefficient between the HTF and PCM balls. The poor thermal conductivity of the PCM has only negligible effect on heat transfer due to high surface convective resistance provided by the air. The influence of various parameters for the selected range of values were analyzed using the charging time, instantaneous heat stored and cumulative heat stored during the charging process. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：74 / 80
页数：7
相关论文
共 25 条
[1]   A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems (LHTESS) [J].
Agyenim, Francis ;
Hewitt, Neil ;
Eames, Philip ;
Smyth, Mervyn .
RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2010, 14 (02) :615-628
[2]   Numerical and experimental study of melting in a spherical shell [J].
Assis, E. ;
Katsman, L. ;
Ziskind, G. ;
Letan, R. .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2007, 50 (9-10) :1790-1804
[3]   Experimental and numerical investigation of solid particles thermal energy storage unit [J].
Benmansour, A ;
Hamdan, MA ;
Bengeuddach, A .
APPLIED THERMAL ENGINEERING, 2006, 26 (5-6) :513-518
[4]   Total solidification time of a liquid phase change material enclosed in cylindrical/spherical containers [J].
Bilir, L ;
Ilken, Z .
APPLIED THERMAL ENGINEERING, 2005, 25 (10) :1488-1502
[5]   WATER THERMAL STORAGE WITH SOLIDIFICATION [J].
CHEN, SL ;
YUE, JS .
HEAT RECOVERY SYSTEMS & CHP, 1991, 11 (01) :79-90
[6]   THERMAL PERFORMANCE OF COOL STORAGE IN PACKED CAPSULES FOR AIR-CONDITIONING [J].
CHEN, SL ;
YUE, JS .
HEAT RECOVERY SYSTEMS & CHP, 1991, 11 (06) :551-561
[7]   Heat transfer and parametric studies of an encapsulated phase change material based cool thermal energy storage system [J].
Cheralathan M. ;
Velraj R. ;
Renganarayanan S. .
Journal of Zhejiang University-SCIENCE A, 2006, 7 (11) :1886-1895
[8]   Thermal characteristics of paraffin in a spherical capsule during freezing and melting processes [J].
Cho, K ;
Choi, SH .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2000, 43 (17) :3183-3196
[9]   Numerical simulation of a latent heat thermal energy storage system with enhanced heat conduction [J].
Costa, M ;
Buddhi, D ;
Oliva, A .
ENERGY CONVERSION AND MANAGEMENT, 1998, 39 (3-4) :319-330
[10]   Heat transfer enhancement in energy storage in spherical capsules filled with paraffin wax and metal beads [J].
Ettouney, H ;
Alatiqi, I ;
Al-Sahali, M ;
Al-Hajirie, K .
ENERGY CONVERSION AND MANAGEMENT, 2006, 47 (02) :211-228
123