Exergy Analysis and Exergoeconomic Optimization with Multiobjective Method of Unit 4 Kamojang Geothermal Power Plant

2016 ◽  
Vol 819 ◽  
pp. 523-529 ◽  
Author(s):  
Nasruddin ◽  
Septian Khairul Masdi ◽  
Arief Surachman
Keyword(s):  
Power Plant ◽  
Exergy Analysis ◽  
Exergy Efficiency ◽  
Economic Optimization ◽  
Efficiency Optimization ◽  
Geothermal Power Plant ◽  
System Cost ◽  
Wellhead Pressure ◽  
Geothermal Power ◽  
Valve Pressure

This study presents four analysis at unit 4 Kamojang geothermal power plant are exergy analysis at current condition, exergy efficiency optimization, economic optimization, and exergoeconomic optimization with wellhead valve pressure as a variable. Calculations are conducted by using the MATLAB. Thermodynamics characteristic of geothermal fluid assumed as water characteristic which get from REFPROP. Wellhead pressure operational condition 10 bar has exergy efficiency 31.91%. Exergy efficiency optimization has wellhead valve pressure 5.06 bar, exergy efficiency 47.3%, and system cost US$ 3,957,100. Economic optimization has well pressure 11 bar, exergy efficiency 22.13%, and system cost US$ 2,242,200. Exergoeconomic optimization has 15 optimum condition. Exergoeconomic optimization aims to analyze the optimum wellhead valve pressure for maximum exergy efficiency and minimum cost of power plant system.

EXERGY ANALYSIS OF GEOTHERMAL POWER PLANT KAMOJANG 68, 3 MW IN CAPACITY

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Amiral Aziz
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Exergy Analysis ◽  
Exergy Efficiency ◽  
Preliminary Design ◽  
Exergy Destruction ◽  
Geothermal Power Plant ◽  
Production Wells ◽  
Geothermal Power ◽  
Exergy Losses

The importance of exergy analysis in preliminary design of geothermal power has been proven. An exergy analysis was carried out and the locations and quantities of exergy losses, wastes and destructions in the different processes of the plan were pinpointed. The obtained results show that the total exergy available from production wells KMJ 68 was calculated to be 6967.55 kW. The total exergy received from wells which is connected during the analysis and enter into the separator was found to be 6337.91 kW in which 5808.8 kW is contained in the steam phase. The overall exergy efficiency for the power plant is 43.06% and the overall energy efficiency is 13.05 %, in both cases with respect to the exergy from the connected wells. The parts of the system with largest exergy destruction are the condenser, the turbine, and the disposed waste brinekeywords: exergy, irreversibility, geothermal power plant, KMJ 68

Improvement potential of a real geothermal power plant using advanced exergy analysis

Energy ◽  
2016 ◽  
Vol 112 ◽  
pp. 254-263 ◽  
Author(s):  
Harun Gökgedik ◽  
Muhammet Yürüsoy ◽  
Ali Keçebaş
Keyword(s):  
Power Plant ◽  
Exergy Analysis ◽  
Geothermal Power Plant ◽  
Improvement Potential ◽  
Geothermal Power

scholarly journals A STUDY OF FIELD GEOTHERMAL POWER POTENTIAL & THERMODYNAMIC CONCEPTS OF PROSPECTIVE BINARY POWER CYCLE BASED GEOTHERMAL POWER PLANT FOR TATAPANI GEOTHERMAL FIELD.

2020 ◽  
Vol 9 (12) ◽  
pp. 90-104
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Exergy Analysis ◽  
Geothermal Field ◽  
Flow Diagram ◽  
Exergy Destruction ◽  
Geothermal Power Plant ◽  
Power Cycle ◽  
Geothermal Fields ◽  
Geothermal Power

Tatapani Geothermal field is one of the most promising low-enthalpy geothermal fields in central India, located on Son-Narmada lineament in the state of Chhattisgarh, India. The Tatapani geothermal field geological, geo-chemical & reservoir data has been compiled and analysed for evaluating true power potential & better understanding of the field. The low enthalpy geothermal reservoirs can be utilized for power production using Organic Rankine Cycle (ORC) or binary power cycle. Based on previous research works done, the Tatapani geothermal field has been found to be very prospective and has got huge potential for power generation. The binary power cycle has been studied in detail along with thermodynamic concepts. In addition, similar low enthalpy geothermal power plants (conceptual & existing both) have been thoroughly studied in order to understand the concepts and methodology to perform technical feasibility based on thermodynamic and exergy analysis. The literature review covers the previous works done on Tatapani geothermal field including works on other geothermal fields in India along with previous research works for Thermodynamic & Exergy Analysis carried-out for binary geothermal power plants across the world for similar low enthalpy prospects. The methods of performing thermodynamic and exergy analysis for a potential geothermal power plant has been studied and compared. Exergy analysis highlights the areas of primary exergy destruction at various plant components and can be illustrated in the form of exergy flow diagram. The loss of exergy indicates the potential reasons for the inefficiencies within a process and exergic efficiency as conversion of input heat energy from the brine in to useful work output. The exergic efficiencies can be calculated for each component along with exergy destruction. The detailed study has been conducted in order to gather the knowledge regarding conducting the feasibility of setting up binary geothermal power plant at Tatapani from technical point of view using thermodynamic concepts.

scholarly journals Exergy analysis for a proposed binary geothermal power plant in Nisyros Island, Greece

Geothermics ◽  
2017 ◽  
Vol 70 ◽  
pp. 38-46 ◽  
Author(s):  
Christopher Koroneos ◽  
Apostolos Polyzakis ◽  
George Xydis ◽  
Nikolaos Stylos ◽  
Evanthia Nanaki
Keyword(s):  
Power Plant ◽  
Exergy Analysis ◽  
Geothermal Power Plant ◽  
Binary Geothermal Power Plant ◽  
Geothermal Power

scholarly journals Energy and exergy analysis of dry-steam geothermal power plant: Case study in kamojang geothermal power plant unit 2

2018 ◽  
Vol 197 ◽  
pp. 08018
Author(s):  
Nova Dany Setyawan ◽  
Nugroho Agung Pambudi ◽  
Frandhoni Utomo ◽  
Herman Saputro ◽  
Reza Adiprana ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Power Plants ◽  
Exergy Analysis ◽  
Research Unit ◽  
Geothermal Power Plant ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Geothermal Power ◽  
The Government

The Government of Indonesia is committed to realize a policy of 35,000 Megawatt (MW) of an additional supply of electricity within 5 years (2014-2019). The projection of this capacity is largely supported by fossil fuel power plants and a small portion of renewable energy. One of the renewable energy which currently has great potential in Indonesia is the geothermal. Therefore, improving the capacity of geothermal is needed to support the policy. The Kamojang is one of the largest geothermal power plant in Indonesia with an installed capacity of 235 MW from 5 generating units. The purposes of this research is to calculate the energy and exergy analysis at Kamojang geothermal power plant. To improve the capacity, exergy analysis can be used by employing the thermodynamic method. In this research, unit 2 of Kamojang's plant is employed. The analysis was examined by using the Engineering Equation Solver (EES) code. The results show the first law of efficiency was calculated at 19.03% and the second law of efficiency at 40.31%.

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