PDF(Pubmed)
Abstract：
Industrial development in Ethiopia is rapidly increasing, leading to a growing gap between energy supply and demand. To address this, efficient energy utilization in existing industries is crucial. Energy audits identify energy losses and recommend saving measures. Therefore, this study evaluates energy efficiency through an audit and estimates greenhouse gas emissions for a Meta Abo brewery. The indirect method of energy audit and the greenhouse gas protocol of carbon footprint estimation were used to evaluate the energy efficiency and carbon emissions of Meta Abo brewery. The boiler efficiency for Bono Energia and Cochran boilers was found to be 79.2% and 80.9%, respectively. Poor insulation caused an estimated annual fuel loss of 35,350 l (638,768 Ethiopian birr) for steam pipes, while steam leakage resulted in a loss of 31,614 l (571,265 Ethiopian birr). The factory\'s high electricity expense was attributed to a diesel generator consuming 6000 l/d. Greenhouse gas emissions raised from 9156 to 22,697 tons of CO2 equivalent between 2014 and 2018. Implementing the proposed energy-saving measures could save 20.4 TJ of thermal and electrical energy annually, costing approximately 8.5 million Ethiopian birr, and reduce boiler emissions by 455 tons of CO2 equivalent. Therefore, implementation of these measures is recommended.
摘要：
埃塞俄比亚的工业发展迅速，导致能源供需之间的差距越来越大。为了解决这个问题，有效利用现有行业的能源至关重要。能源审计可识别能源损失并建议节能措施。因此,这项研究通过审计评估能源效率，并估计MetaAbo啤酒厂的温室气体排放量。采用间接能源审计方法和温室气体碳足迹估算协议对MetaAbo啤酒厂的能源效率和碳排放进行评价。BonoEnergia和Cochran锅炉的锅炉效率分别为79.2％和80.9％，分别。绝缘不良导致蒸汽管道估计每年燃料损失35,350l（638,768埃塞俄比亚比尔），而蒸汽泄漏导致损失31,614升(571,265埃塞俄比亚比尔)。工厂的高额电费归因于柴油发电机消耗6000升/天。2014年至2018年，温室气体排放量从9156吨增加到22,697吨二氧化碳当量。实施拟议的节能措施可以每年节省20.4TJ的热能和电能，耗资约850万埃塞俄比亚比尔，并减少锅炉排放455吨二氧化碳当量。因此,建议实施这些措施。
