@thesis{thesis,
		author={Arifin  Zainal and Wahyu  Wahyu},
		title ={Perbandingan Penggunaan Teknologi Pendingin Udara Antara Sistem Chiller dan VRF (Variable Refrigrant Flow) Pada Gedung Bertingkat.},
		year={2020},
		url={http://156.67.221.169/5456/},
		abstract={Electricity energy saving now becoming the main of electricity studies, especially for electricity energy consumption in high rise buildings. Most of the electrical energy comes from air conditioning systems utilization. Determination of the efficiency of the cooling system in high rise buildings can be analyzed in two terms such as technical and financial. Therefore, this study aims to analyze the efficient one for the type of air conditioning systems to be applied in office buildings. Technically this research was conducted by simulating building cooling system using the HAP (Hourly Analysis Program) E-20 software to calculate the amount of electricity consumption and financially carried out by comparing of investment costs, operational costs, and maintenance costs of the cooling system. The results of simulation and analysis in terms of VRF electrical energy consumption is greater than 7.4% of the financial chiller for cooling systems in office buildings Chiller multilevel is more efficient 35% compared to the VRF (Variable Refrigrant Flow) system}
		}