A Study on Outside Air Control for Energy Saving in Air-Conditioning System

• Main Authors: Yin-Chi Chang, 張寅祺
• Other Authors: 蔡尤溪
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/kcrtmv

碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 96 === This study used three typical types of buildings for energy analysis. 3D building models were created for annual dynamic building energy analysis using DOE-2. This study used annual local weather data for annual energy consumption comparison with the actual building cases. Simulation of annual energy consumption of outside air control include outside air control according to the number of people and indoor carbon dioxide level. It was found from the simulation results that outside air control can save energy especially using number of people and carbon dioxide level as the control parameters. The total electricity consumption of the building per year could drop about 6.18%, and that of air-conditioning is about 12.71%, when the number of people indoor controls outside air volume. When indoor carbon dioxide level is set at 1000 ppm, it could reduce the total annual electricity consumption of the building by about 24.44% as compared to the present cases. Carbon dioxide level of 1000 ppm as compared with 600 ppm can save air-conditioning energy by about 29.96%. Then a hospital building and school building were simulated and analyzed for the annual energy consumption. A comparison between two levels of indoor carbon dioxide levels, namely, 1000 ppm and 600 ppm was studied. When indoor carbon dioxide level was set at 1000 ppm in for the hospital building, it could reduce the total annual electricity consumption by about 6.31%, and that for air-conditioning is about 10.2% as compared with 600 ppm. When indoor carbon dioxide level is set at 1000 ppm in the school building, it could reduce the total annual electricity consumption of the building by about 32.54%, and that for air-conditioning is about 40.22% as compared with 600 ppm. According to the aforementioned, it can be concluded that outside air control has a great potential for energy saving. Using outside air control could have a great contribution to save energy during this era of energy shortage.