Theoretical modelling and experimental investigation of a thermal energy storage refrigerator

被引:43
|
作者
Marques, A. C. [1 ,2 ]
Davies, G. F. [1 ]
Evans, J. A. [1 ]
Maidment, G. G. [1 ]
Wood, I. D. [2 ]
机构
[1] London South Bank Univ, Dept Urban Engn, London SE1 0AA, England
[2] Adande Refrigerat, Lowestoft NR33 7NL, Suffolk, England
基金
英国工程与自然科学研究理事会;
关键词
Household refrigerator; Phase change material; Energy storage; Temperature distribution; CFD; NATURAL-CONVECTION; HEAT-TRANSFER; CAVITY;
D O I
10.1016/j.energy.2013.03.091
中图分类号
O414.1 [热力学];
学科分类号
摘要
Numerical simulations using the computational fluid dynamics (CFD) software ANSYS Fluent were undertaken to characterize the airflow and temperature distribution in a natural convection thermal energy storage refrigerator. The model compared the household refrigerator temperature stability with different phase change materials (PCM) incorporated into the storage compartment. Scenarios investigated included the PCM orientation (vertical or horizontal), PCM temperature (use of water or eutectics) and compartment designs (conventional or drawer type appliance). The results suggested that a horizontal PCM configuration produces lower compartment temperatures than a vertical configuration. The temperature distribution with a horizontal PCM was tested experimentally and the results were in agreement with the CFD predictions. Both the simulation and the experimental results suggest that a eutectic with a phase change temperature below 0 degrees C must be employed to maintain the compartment temperature within acceptable limits. The model indicated that combining horizontal and vertical PCMs in a full height compartment or dividing the same compartment into two drawers with a horizontal PCM configuration for each drawer are feasible design options for the household thermal storage refrigerator. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:457 / 465
页数:9
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