Evaluation of ACMV Pump Performance Towards Energy Efficiency and Cost Saving at Tunku Tun Aminah Library and Technology Complex (Block G) in UTHM
Commercial buildings are one of the major energy consumers apart from industrial and residential buildings and account for 32.7% according to statistics issued by Energy Commission of Malaysia. In the building, it is well known that the largest amount of electrical energy was utilized by the Air-Conditioning and Mechanical Ventilation (ACMV) system. This study was carried out to evaluate pump performance which was used in a typical ACMV system. Pumps in two centralized air-conditioning systems in UTHM was investigated located in Technology Complex Block G and Tunku Tun Aminah Library. A detailed energy audit was carried out at both locations for a duration of 2 weeks focusing on energy data logging at pumps to establish their load profile. A total of 14 pumps were analyzed in terms of power consumption, maximum demand, and pump efficiency. It was found that the pumps have an almost constant load profile with maximum demand ranging from (13.5 kW – 190 kW) with occurs mostly during pump start-up in the morning. The total pumping power for all 14 pumps was 1335.57 kWh and averaging at 218.25 kWh per pump. The pump efficiency ranged from 62.8% – 85.5% compared to MS1525:2014 Standard, most of the pump operate with satisfactory performance with improvements could be made.