Energy-saving study of the Air Condition and Air Compressor equipments for TFT-LCD factory

• Main Authors: Yu-Cheng Lin, 林昱承
• Other Authors: 鄭鴻斌
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/8aq9d8

碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 101 === Among the facility systems of panel industry, the chiller system (accounting for about 14% of plant power consumption) and the compressed dry air (CDA) system (accounting for about 19% of plant power consumption) have the maximum energy consumption. This study attempted to improve the Six Sigma for industrial process, and discussed the benefits before and after the energy saving improvement measures through Measure, Analyze, Improve, and Control, as well as the use of Minitab software. Using the TFT-LCD+CF of a fifth generation plant in Taiwan as an example, the dew-point temperature of CDA system increased from -70℃ to -20℃ (heatless dryer), the unit power consumption decreased from 147 W/m3 to 132 W/m3, and the energy-saving benefit was 7.3%. After the improvement by additional thermal dryer, the daily CDA energy consumption was reduced by 29,743 kW, the energy-saving benefit was 20.8%. For the chiller system, through the two-factor two-level DOE experiment design (1st : chiller’s cooling water temperature is 26℃ and supply chiller water temperature is 8.5℃ ; 2nd : chiller’s cooling water temperature is 26℃ and chiller’s cooling water temperature is 5.8℃), the total power consumption and unit energy consumption were lower. From 2010 to 2012, the CDA system facility was improved, the optimum system operating parameters were found for the chiller system, and the energy saving of various equipment machines was promoted. The measured unit energy consumption of the production of panels decreased year by year, 183 kW/m2 in 2010 → 171 kW/m2 in 2011 → 147 kW/m2 in 2012, which is a decrease by 19.6%.