# 저온의 고-액상변화 모듈 용기의 배열에 따른 축냉시스템의 수치해석

Mun, Soo-Beom
문수범

• Accepted : 2015.10.27
• Published : 2015.10.31
• 11 1

#### Abstract

This paper is the fundamental study for the application of cold storage system to the transportation equipment by sea and land. This numerical study presents the solid-liquid phase change phenomenon of calcium chloride solution of 30wt %. The governing equations are 1-dimensional unsteady state heat transfer equations of $1^{st}$ order partial differential equations. This type of latent heat storage material is often usable in fishery vessel for controlling the temperature of container with constant condition. The governing equation was discretized with finite difference method and the program was composed with Mathcad program. The main parameters of this solution were the initial temperature of heat storage material, ambient temperature of cold air and the velocity of cold air. The data of boundary layer thickness becomes thin with the increasing of cold air flowing velocity and also the heat storage completion time become shorten.

#### Keywords

Numerical analysis;Cold storage system;Solid-liquid phase change;Finite difference method;1-dimensional unsteady state equation

#### References

1. Azzouz, K., D. Leducq and D. Gobin(2009), Enhancing the performance of household refrigerators with latent heat storage : an experimental investigation, International Journal of Refrigerator, Vol. 32, pp. 1634-1644. https://doi.org/10.1016/j.ijrefrig.2009.03.012
2. Azzouz, K., D. Leducq and D. Gobin(2008), Performance enhancement of a household refrigerator by addition of latent heat storage, International Journal of Refrigerator, Vol. 31, pp. 892-901. https://doi.org/10.1016/j.ijrefrig.2007.09.007
3. Dincer, I. and M. A. Rosen(2001), Energetic, environmental and economic aspects of thermal energy storage systems for cooling capacity, Apply Thermal Engineering, Vol. 21, pp. 1105-1117. https://doi.org/10.1016/S1359-4311(00)00102-2
4. Erek, A. and M. A. Ezan(2007), Experimental and numerical study on charging process of an ice-on-coil thermal energy storage system, International Journal of Energy Resource, Vol. 31, pp. 158-176. https://doi.org/10.1002/er.1240
5. Hasnain, S. M.(1998), Review on sustainable thermal energy storage technologies. Part : cool thermal storage, Energy Conversion Management, Vol. 39, pp. 1139-1153. https://doi.org/10.1016/S0196-8904(98)00024-7
6. Jun, Y. H., J. H. Kim, J. H. Moon and S. R. Lee(2015), Development and Field Test of the PCM Cold Storage System to Apply Nighttime Electric Power to Refrigeration Warehouse, The Society of Air Conditioning and Refrigerating Engineers of Korea Seasonal Conference(Summer), pp. 751-754.
7. Mehling, H. and L. F. Cabeza(2008), Heat and cold storage with PCM, An up to data introduction into basics and applications, Springers-Verlag Berlin Heidelberg. pp. 11-55.
8. Melone, L., L. Altomare, A. Cigada and L. De Nardo(2012), Phase change material cellulosic composites for the cold storage of perishable products: from material preparation to computational evaluation, Apply Energy, Vol. 89, pp. 339-346. https://doi.org/10.1016/j.apenergy.2011.07.039
9. Onyejekwe, D.(1989), Cold storage using eutectic mixture of NaCl/H2O : an application to photovoltaic compressor vapours freezers, Solar Wind Technology, Vol. 6, pp. 11-18. https://doi.org/10.1016/0741-983X(89)90033-7