Design and Evaluation of a Central Air-Conditioning System for a 1,000 Seat Lecture Hall

Abstract

Life well-being is affected by the physiological parameters evaluated by the degree of heat production within the body and the amount of heat given out to the surroundings. This study investigated the design and review of an existing central air-conditioning system for a 1000-capacity lecture hall 2, using Covenant University as a case study. An agreement between the cooling load calculation required in the hall and the air distribution in the system was assessed. The cooling loads were calculated after selecting the peak time for the main lecture hall and all the rooms attached as 118TR plant capacity. The Sensible Heat Factors (SHF) were evaluated for the hall as 0.628. R410A was selected for this study due to several advantages, such as a system reduced magnitude design, effective employment that can be attained, and its operating pressure was found to be 1.6 times higher than R22. Again, it was evident from the results of the cooling load calculated that the existing installed 30TR capacity of CAC for the lecture hall is extremely under-estimated, a justifiable reason why human comfort during lectures is never enhanced.