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Performance of Downward-blowing Air Curtain m Heating Space Considering External Wind Condition  

Sung, Sun-Kyung (Department of Building equipment System Engineering, Kyungwon University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.21, no.7, 2009 , pp. 417-423 More about this Journal
Abstract
Air curtains are widely used for gates of shopping mall, warehouse, cold stores and refrigerated display cabinets. The purpose of the air curtain is to reduce the infiltration of outdoor air and heat loss from the air conditioning space to ambient air. Design data for the air curtain given by previous researchers do not mention the influence of wind speed. Thus, this paper presents a performance of single jet air curtain in heating space when the wind blows toward the opening space of the building. A numerical simulation is used to study the influence of various parameters on the efficiency of the downward-blowing air curtain device which is installed inside of the wall above the door. The performance of the air curtain is evaluated by sealing efficiency which provides the assessment of the energy savings. A new safety factor is also proposed for determination of air curtain jet velocity under the various wind conditions.
Keywords
Air curtain; Air curtain jet velocity; Wind speed; Downward-blowing; Sealing efficiency;
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  • Reference
1 Downing, C. C. and Meffert, W. A., 1993, Effectiveness of cold-storage door infiltration protective devices, Trans. Am. Soc. Heating. Refrigerating and Air Cond. Eng. Vol. 99, p. 356
2 Havet, M., Rouaud, O., and Solliec, C., 2003, Experimental investigations of an air curtain device subjected to external perturbations, Heat and Fluid Flow, Vol. 24, pp. 928-930   DOI   ScienceOn
3 Hayes, F. C. and Stoecker, W. F., 1969, Design data for air curtains, ASHRAE Transactons, Vol. 75, pp. 168-179
4 Luis P. C., Neto, M. C., Gameiro Silva and Jose J. Costa., 2006, On the use of infrared thermography in studies with air curtain devices, Energy and Buildings, Vol. 38, pp. 1194-1199   DOI   ScienceOn
5 ASHRAE., 1985, ASHRAE Hand Book, Fundamentals, ASHRAE, pp. 14.1-14.5
6 Costa, J. J., Oliveira, L. A., and Silva, M. C. G., 2006, Energy saving by aerodynamic sealing with a downward-blowing plane air curtain- A numerical approach, Energy and Buildings, Vol. 38, pp. 1182-1193   DOI   ScienceOn
7 Foster, A. M., Swain, M. J., Barret, R., and Agaro, P. D’, 2007, Three-dimensional effects of an air curtain used to restrict cold room infiltration, Applied Mathematical Modelling, Vol. 31, pp. 1109-1123   DOI   ScienceOn
8 Kai Sire’n, 2003, Technical dimensioning of a vertically upwards-blowing air curtain-part Ⅱ, Energy and Buildings, Vol. 35, pp. 697-705   DOI   ScienceOn