Thermo Economic Analyses of an Organic Rankine Cycle to Produce Combined Heat and Power Based on Various Energy Resources in Ardebil State

Ariyanfar, Leyli; Yari, Morteza; Abdi Aghdam, Ebrahim

Thermo Economic Analyses of an Organic Rankine Cycle to Produce Combined Heat and Power Based on Various Energy Resources in Ardebil State

Document Type : Research Article

Authors

¹ Department of Mechanical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, I.R. IRAN

² Faculty of Mechanical Engineering, University of Tabriz, Tabriz, I.R. IRAN

Abstract

In this research, thermodynamically design and also technical, economic and environmental studies of an organic Rankine cycle have been performed to produce combined heat and power (CHP). Along with the technical evaluation of affecting parameters on the cycle, the importance and effectiveness of each parameter are considered too. Various type of energy sources such as solar, biomass and geothermal as renewable resources based on Ardebil state conditions and natural gas as fossil fuel have been studied and their generated power prices have been compared. Also, it is tried that by using a proposed two-step condenser, in order to use the outlet heat of condenser, its temperature keeps high as much as possible such that the hot flow is useable to produce heat in addition to power. With comparing the thermal and exergy efficiencies for power generation and cogeneration of heat and power (CHP) cases it is observed that because of optimized usage of energy resources in the CHP, the efficiencies increase 5.71% and 5.45% from thermal and exergy standpoints, respectively. As well as from an environmental perspective, it is estimated that annual 3.297×10⁶ dollars saving from not impose external costs will be made by CHP in the renewable energy resource systems.

Keywords

Main Subjects

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