Comparison of Thermoeconomic Cost Calculation for a Binary Geothermal Power Plant

Abstract

This paper presents a comparison of the three thermoeconomic methodologies, SPECO (Specific exergy costing), MOPSA (Modified productive structure analysis) and Moran for an existing binary geothermal power plant in western Turkey. Exergy and exergoeconomic analyses of the Dora II binary geothermal power plant with 9543 kW net power output is carried out by using actual plant data to evaluate plant performances and thermoeconomic costs. The objective of the study is to perform the advantages and disadvantages of the presented thermoeconomic methods with respect to the one other using a binary geothermal plant data. The presented thermoeconomic methodologies are used to reveal and compare the cost flows and products interactions between the system components. The overall energy and exergy efficiencies of the plant are calculated to be 47.3% and 13.5%. The unit exergetic costs of electricity are calculated to be 0.0436 $/kWh for MOPSA method, 0.0367 $/kWh for SPECO method and 0.0355 $/kWh for MORAN method, respectively. Keywords: Geothermal Power, Thermoeconomic Analysis, SPECO, MOPSA, Moran Methods INTRODUCTIONEnergy is the great deals of the phenomena in the world and it is a very important tool for the sustainability of life. Because we use it in every single thing we do. Especially developed and developing countries are required too much needs. Electricity is the most efficient and useful forms of the energy. Therefore, different kinds of resources and methods are used in energy production. In addition, many explorations and investigations are being to solve energy requirements. Environmental disasters and recent progress caused by the use of fossil fuels that have led us directly to the use of renewable energy sources for energy productions. Harmful effects of the environmental pollution on living and human health are increasing day by day. For that reason, there is a restriction to the use of the fossil fuels for the use of energy on a country basis. Renewable energy power production is attractive and feasible way to solve for the environmental pollutants and health problems [1]. Main renewable energy sources include solar, wind, hydropower, geothermal and biomass. Hydroelectric, geothermal and wind power generation are able to compete with fossil fuel based on electricity generation economically but solar electricity is still expensive. However, steady decrease in solar electricity cost and government incentives can help wider use of solar electricity. Biomass, solar, and geothermal electricity generation are also expected to increase in the coming years [2].Among renewable sources, geothermal energy has significant potential in electricity production for Turkey. Geothermal energy is the water thermal absorbed energy by the ground within the earth interior energy. It is a renewable energy resource because heat is continuously transferred from within the earth to the water recycled by rainfall or reinjected back to the ground after use. Geothermal energy conversion is one of the most mature renewable ...

Thermoeconomic analysis and environmental impact assessment of the Akkuyu nuclear power plant

“…It is the simplest and most general approach among exergoeconomic methods. [59] Thermodynamic data of the plant were prepared in accordance with the State Program for environmental safety, including IEA-TECDOC-1391, published in 2004. Equivalent equipment values of the reactor plant V-392, V392 and Belene NPP in Bulgaria based on the AES-92 evolutionary NPP design were used [60].…”