4E Analyses of a Hybrid Waste-Driven CHP–ORC Plant with Flue Gas Condensation

Hossein Nami, Amjad Anvari-Moghaddam, Ahmad Arabkoohsar and Amir Reza Razmi
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Hossein Nami: Department of Mechanical Engineering, Faculty of Engineering, University of Maragheh, 55181-83111 Maragheh, Iran
Amjad Anvari-Moghaddam: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
Ahmad Arabkoohsar: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
Amir Reza Razmi: Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada

Sustainability, 2020, vol. 12, issue 22, 1-21

Abstract: The combination of a waste-driven hybrid heat and power plant with a small organic Rankine cycle unit was recently proposed and investigated from a thermodynamic perspective. The present study provides a more comprehensive assessment from system operation through considering the energy, exergy, exergoeconomic, and exergoenvironmental (4E) aspects in a revised design of this concept to obtain a bigger picture of the system’s technical, economic, and environmental effects on existing and future energy systems. The revised design includes a flue gas condensation unit and alternative friendly organic working fluids. For this, the hybrid plant is modeled for its thermal, economic, and environmental performances. Then, the exergy losses and environmental effects of the system are scrutinized, the cost of losses and pollutions are predicted, and lastly, sorts of solutions are introduced to improve the exergoeconomic and exergoenvironmental performances of the system. The results indicate that the highest share of exergy destruction relates to the incineration (equipped with a steam generator) with a levelized cost of approximately USD 71/h for a power plant with almost 3.3 megawatt electricity output capacity. The hybridization proposal with the flue gas condensation unit increases the sustainability index of the system from 1.264 to 1.28.

Keywords: waste-fired CHP; ORC; waste heat recovery; district heating; exergoeconomic analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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