| Summary: | 碩士 === 國立臺灣大學 === 機械工程學研究所 === 99 === In this research, a solar air-conditioning system for direct driving is designed on nearly Maximum Power Point Operation (nMPPO). Besides, discuss the relationship between the solar air-conditioning system for direct driving operation situation and changes in the amount of radiation. Discussion can be divided into two parts, (1) the cumulative amount of radiation for all day on the air conditioning system operating situation; (2) instantaneous changes in the amount of radiation effects the operation of air-conditioning system. The study found that the cumulative amount of radiation on the operation ratio of air-conditioning system generally showed a linear relationship. The cooling capacity and the cumulative amount of radiation is roughly positively correlated. In addition, the operation ratio of air-conditioning system also affected by the weather that day, including (1) the distribution of radiation (2) the rapid changes in the amount of radiation.
In this research, discusses the effect of air-conditioning system design on the operating ratio. The study found that the system battery capacity increased, but the same wattage of solar cells, the operation ratio of air-conditioning system has not significantly improved. Thus, the operation rate of air-conditioning system is mainly decided by the wattage of solar cells.
Finally, this study explores the economic benefits of air-conditioning system for direct driving. To establish the system model from the experimental results and the analysis the economic benefits found that using solar air-conditioning for direct driving in the summer electricity peak load, unit cost of cooling is lower than the conventional air-conditioning. System is suitably set up in areas where solar radiation is adequate. According to local weather patterns, the system should not be designed too large wattage of solar cells because it will increase unit cost of cooling.
|
|---|
