Assessment of conventional air conditioner system by measurement in tropical region

Abstract

In this study, the performance of a Fan Coil Unit (FCU) in a seminar room has been evaluated by measurement in hot and humid weather of Malaysia. Apportioning of cooling load, cooling coil capacity and the air properties in different points of FCU were considered as performance factors. Temperature, humidity and flow rate of air in different points of case study were detected by measurement. The measurement result demonstrates that the temperature and humidity of seminar room under application of FCU were 24.3°C and 77.1%, which are not matched with standard indoor condition (25°C, 50%). It was achieved that 51 and 49% of total cooling load (9.36 kW) were related to latent and sensible loads, respectively. Apportioning of FCU cooling coil capacity showed that 56% of the total cooling coil capacity (13.06 kW) was related to the dehumidification process and 46% was related to the sensible cooling process. In order to reaching the standard indoor condition, a FCU standard have been designed. The results of comparison between installed FCU and FCU standard showed that the energy consumption of the FCU standard was 1.4 times higher than that in installed FCU. © 2016 M.M.S. Dezfouli.