Evaluating air conditioner utilization of lecture halls in Universiti Tun Hussein Onn Malaysia (UTHM)

Global energy consumption has shown a rapid growth in developed and developing countries. By this, nations being a concern of energy saving especially for electronic devices likes heating, ventilation and air conditioner (HVAC) system which commonly use at the domestic resident and non-domestic such as industry, service center and others. In order to reduce the air conditioner energy consumption, there are two ways that usually did by the engineer which called as active way that modifying air conditioner model and the passive way that applying of green building materials. However, this research objective identifies the suitable horsepower of the air conditioner and identify the energy consumption that applied in certain physical dimensions of space and occupancy level by measuring the indoor temperature of five selected lecture hall with a thermometer from time to time. Thus, the expected results may be shows there was more energy consumption needed for space cooling in the bigger lecture hall and higher occupancy level of people. At the same time evaluation of the efficiency and coefficient of performance of the air conditioner system has been made and suggested a new idea to reduce the air conditioner energy consumption. By this, the research may contribute to cost reduction and reduce the negative environment impact that comes from air conditioner system