Analytical and Numerical Approaches to Optimize the Air Vents Location of Office Space at Different Surrounding Conditions

Abstract

Optimization becomes an essential tool in all aspects of life. Air entrances and exits locations in any building are one of them that need to be optimized to reduce the energy consumption. Hence, a numerical and analytical investigations of two Models were performed to a teaching assistantship (TA’s) office. The original office design (Model 1) has all the hot and cold air inlets beside the air outlet in the mid-position of the room ceiling. The suggested model of the office (Model 2) is designed by putting the cold air inlet in the middle of the ceiling, whereas the hot air inlet in the middle of the floor close to the widow of the office. The air outlet was kept in the middle of the room ceiling. These models analysed as a function of the ambient temperatures in the 21st of four months (December, March, June, and September) within the periods 9:00, 12:00, and 16:00 h. For more validation, the comparison between the analytical and numerical results of Model 2 is validated with a maximum variation of about 7%. In addition, the analytical room temperature results of Model 1 are higher than Model 2 by 10.3%. Finally, the best average comfortable temperature for humans had been discovered in Model 2 for all cases around 23 ˚C with a maximum error percentage of less than 10%.