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Technical, economic, and environmental analyses of CCHP systems with waste incineration power plant as prime mover
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects ( IF 2.9 ) Pub Date : 2021-09-02 , DOI: 10.1080/15567036.2021.1968074
Mahmood Chahartaghi 1 , Naser Dahmardeh 1 , Seyed Majid Hashemian 1 , Rahmat Malek 1
Affiliation  

ABSTRACT

In recent years, population growth and community development have increased the volume of waste in many parts of the world, including in Iran. If management measures are not taken to reduce the volume of waste at the surface, the problem of increasing waste will become a major and serious threat to human life. Therefore, incineration plants w ill be built to reduce the volume of waste, which have potential to generate power. Accordingly, the purpose of the present study is potential analysis of exhaust gases from the incineration plant for use in the combined cooling, heating, and power system, as well as the environmental analysis of the power plant. Using Aspen software, an initial model of the trigeneration cycle power plant is designed and the layout and arrangement of the cycle are accomplished. The mass flow of waste consumed at the power plant is 8333 kg/h and power generation is 3 MW. Heat losses from boiler exhaust gases are inserted into a heat exchanger modeled by EES software to meet the heat requirement. The heat exchanger efficiency is 70%, and the outlet water temperature is calculated as 70°C. The exhaust gases from the heat exchanger have been fed into the water-ammonia absorption chiller to meet the cooling requirement. The cooling capacity of the first evaporator is 1111 kW and for the second evaporator, it is calculated to be 529 kW. The power plant energy efficiency is 35%, and when it is converted into a combined cooling, heating, and power (CCHP) system the total efficiency of the system increases by 70%. The economic feasibility of the project has been checked, and the payback period has been estimated to be about 2.5 years. This study shows that CCHP systems using incineration plants as prime movers can play an important role in providing energy requirements and sustainable development.



中文翻译:

以垃圾焚烧发电厂为原动力的 CCHP 系统的技术、经济和环境分析

摘要

近年来,人口增长和社区发展增加了世界许多地方的垃圾量,包括伊朗。如果不采取管理措施减少地表废物量,废物增加问题将成为对人类生活的重大而严重的威胁。因此,将建造焚烧厂以减少废物量,这些废物具有发电潜力。因此,本研究的目的是对用于联合冷却、加热和电力系统的焚烧厂废气进行潜在分析,以及对发电厂的环境分析。利用Aspen软件,设计了三代循环电厂的初始模型,完成了循环的布局和布置。该电厂消耗的废物质量流量为 8333 kg/h,发电量为 3 MW。锅炉废气的热损失被插入到由 EES 软件建模的热交换器中,以满足热量需求。换热效率为70%,出水温度按70℃计算。换热器排出的废气送入水氨吸收式冷水机组,满足冷却要求。第一个蒸发器的制冷量为 1111 kW,第二个蒸发器的制冷量计算为 529 kW。电厂能效为35%,转换为冷热电联产(CCHP)系统后,系统总效率提高70%。项目经济可行性已通过审核,预计投资回收期为2年左右。5年。这项研究表明,使用焚烧厂作为原动力的 CCHP 系统可以在提供能源需求和可持续发展方面发挥重要作用。

更新日期:2021-09-02
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