| Summary: | 碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系 === 107 === According to the US Department of Energys survey on the use of electricity in buildings, the most power-consuming part in air-conditioning systems is chiller unit, accounting for 60% of all systems. 99% of typical chiller units are partially loaded. Therefore, the use of high-efficiency inverters will make the energy-saving effect very significant. This paper shows that the Exchange efficiency COP（Coefficient of Performance, COP）value of the spiral-type chiller units driven by frequency conversion in Taiwans climatic conditions are much better than that of the general fixed-frequency chiller units. This paper takes the air conditioning system of the teaching hospital in the eastern region as an example. After the air conditioning system is replaced and integrated, the monitoring system is used to calculate the required air-conditioning tonnage of the building, control the frequency converting host and auxiliary equipment to load and off-load, and record the electricity consumption to do analysis in order to understand the actual energy saving situation after the replacement of air conditioning equipment. When the equipment is used, the COP value can reach more than 5.50 when operating at 40%~60%. Because the on-site cooling water temperature conditions cannot be matched, there is no expected efficiency. However, the efficiency of the operational state is better than the national standard after comparing with the energy efficiency standards of the chiller unit of the Bureau of Energy, Ministry of Economic Affairs. After the completion of the replacement, the electricity consumption in 2015 was saved by 14.22%, the savings in 2016 was 17.78%, and the emission of CO2 was reduced by about 284,539 kg.
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