Browse > Article
http://dx.doi.org/10.6110/KJACR.2011.23.1.080

Performance of Refrigerated Display Cabinets in accordance with the Supply Air Jet Condition  

Sung, Sun-Kyung (Department of Building equipment System Engineering, Kyungwon University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.23, no.1, 2011 , pp. 80-86 More about this Journal
Abstract
Vertical open display cabinets are widely used in shopping mall, supermarkets, retail stores. Maintaining the temperature of foods in the display cabinet is vitally important to retailers to ensure optimal food quality and safety. The purpose of this study is to reduce the infiltration of air and heat loss from ambient space to display cabinet. The three-dimensional Computational Fluid Dynamics(CFD) simulation is used for the analysis of air flow patterns and temperature distribution in refrigerated display cabinets. Under several operating conditions which vary both the inner and outer jet velocities in the range from 0.3 to 1.1 m/s, simulations were carried out. This paper presents a performance of display cabinets with single jet and double jet. The energy consumption due to thermal entrainment ratio is plotted with varying Re. It was found that the double jet system is better than single jet system in terms of temperature distribution and energy saving.
Keywords
Open display cabinet; Supply air jet; Infiltration of air;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Gray, I., Luscombe, P., Sarathy, C. S. P., Sheahen, P., and Srinivasan, K, 2008, Improvement of air distribution in refrigerated vertical open front remote supermarket display cases, International Journal of Refrigeration, Vol. 31, pp. 902-910.   DOI   ScienceOn
2 Pedro Dims Gaspar, Carrilho Goncalves, L. C. and Pitarma, R. A, 2008, Three-dimensional CFD modelling and analysis of the thermal entrainment in open refrigerated display cabinets, Proceedings of 2008 ASME Summer Heat Transfer Conference HT2008, pp. 1-11.
3 Shin, Y.-H., Oh, W.-K, Park, K-H., Kim, Y., and Shin, Y. 2005, Measurement and analysis of showcase. field data, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol.7, pp. 436-443.
4 Foster, A M., Madge, M. and Evans, J. A., 2005, The use of CFD to improve the performance of a chilled multi-deck retail display cabinet, International Journal of Refrigeration, Vol. 28, pp. 698-705.   DOI   ScienceOn
5 Navaz, H. K., Henderson, B. S., Faramarzi, R., Pormovahed, A., and Taugwalder, F., 2005, Jet entrainment rate in air curtain of open refrigerated display cases, International Journal of Refrigeration, Vol. 28, pp. 267-275.   DOI   ScienceOn
6 Yu, K-Z., Ding, G.-L. and Chen, T.-J., 2007, Simulation of air curtains for vertical' display cases with a two-fluid model, Applied Thermal Engineering, Vol. 27, pp. 2583-2591.   DOI   ScienceOn
7 Foster, A. M., Swain, M. J., Barrett, R., D'Agaro, P., and James, S. J., 2006, Effectiveness and optimum jet velocity for a plane jet air curtain used to restrict cold room infiltion, International Journal of Refrigeration, Vol. 29, pp. 692-699.   DOI   ScienceOn
8 Hayes, F. C. and Stoecker, W. F., 1969, Design data for air curtains, ASHRAE Transactons, Vol. 75, pp. 168-179.
9 Field, B. S. and Loth, E., 2006, Entrainment of refrigerated air curtains down a wall, Experimental and fluid science, Vol. 30, pp. 175-184.   DOI   ScienceOn
10 Kwon, J. T. and Kwon, Y. C., 2003, Development trend of showcase equipment, Magazine of the SAREK Vol. 32, No.7, pp. 34-36.