Proceedings of the 8th International conference on Research in Engineering, Science and Technology
Numerical Analyses Investigation of an Industrial Air Curtain Performance Located at Different Elevations
Sercan Dogan, Sercan Yagmur and Muharrem Hilmi Aksoy
Air curtains are fan-powered devices that create an invisible air barrier over the doorway to separate two different environments, without limiting the access of the people or vehicles. Industrial air curtains are extensively preferred due to energy saving in industrial buildings and they generally use the ambient air for the air barrier. In this study, numerical analyses were carried out to determine sealing performance of an air curtain with cooling unit for indoor room interaction with atmospheric external conditions. Environmental conditions for atmospheric external side and indoor room are taken as 350C and 280C, respectively. Also, the blowing temperature of fan is taken as 180C taken from the measurement values of the refrigeration system. SST k-ω turbulence model was applied for numerical analyses. The analyses were performed for 5 different elevations of air curtain for H=2.5, 3, 4, 5 and 6 m. Temperature contours and streamline topology are presented to clarify the results for five different elevations. It is observed that the air blown from a elevations of 2.5, 3 and 4 m keep the indoor environment at the ambient temperature of approximately at most 280C for a period of 50 s. However, in the case of blowing at the elevation of 5 m and 6 m, the ambient temperatures were found to be about 290C and 300C and less than 50C and 60C from the ambient temperature, respectively. In general, it was concluded that air circulation in the room was uniformly distributed according to the streamline topology results.
Keywords: Air curtain, sealing performance, CFD, Numerical analysis, Industrial application.