Performance Analysis of District Geothermal Energy Cogeneration System

• Main Authors: Wen-Tien Lu, 盧文添
• Other Authors: 莊嘉琛
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/z3jfj6

碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 97 === Due to the limited indigenous resources in Taiwan, most energy resource are relied and imported from other countries. In addition, people are aware of carbon dioxide reducing and also the importance of clean renewable energy. With the inefficiency of the traditional fossil fuel systems and the pollutant emission, we need to look for any clean energetic system. Traditional refrigeration and air-conditioning are vapor compression refrigeration cycle that not only causes an enormous amount of electrical energy but leads to ozone-depleting and the global warming by releasing synthetic refrigerant substances. The reason why we need to seek the alternative refrigerant or even other energy lies in driven refrigeration and air-conditioning system. Because of the abundance of natural geothermal resources in Taiwan, the thesis presents mainly on（1）Using low temperature geothermal energy to drive LiBr/H2O absorption system and analyze the performances of it. Furthermore, this thesis compares primary energy ratio (PER) and carbon dioxide emission of the various energy-driven absorption systems.（2）Using high temperature geothermal energy to drive district cogeneration system that provides thermal energy, electricity and cooling energy to the residence of the region. Analyze the geothermal energy cogeneration system with thermodynamic first and second laws, showing the analysis of the energy losses and efficiency of each subsystem and entire cogeneration system. Therefore, the results of this research can be used to improve the further systematical performance and achieve optimum of district geothermal energy cogeneration system.