Implementation of the Automatics for Switching the Combined-Cycle Plant of Power-Generating Unit No. 5 at Hrazdan Thermal Power Plant to the Steam Power Plant and Gas Turbine Modes

2019 ◽  
Vol 66 (4) ◽  
pp. 249-253
Author(s):  
K. B. Sargsyan ◽  
S. Kh. Yeritsyan ◽  
V. S. Voskanyan ◽  
A. S. Antonyan ◽  
G. G. Tokmajyan ◽  
...  
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Combined Cycle ◽  
Steam Power ◽  
Steam Power Plant ◽  
Power Generating Unit ◽  
Combined Cycle Plant

Thermoeconomic Analysis of Power Plants With Integrated Exergy Stream

2000 ◽  
Author(s):  
Duck-Jin Kim ◽  
Hyun-Soo Lee ◽  
Ho-Young Kwak ◽  
Jae-Ho Hong
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Power Plants ◽  
Unit Cost ◽  
Combined Cycle ◽  
Cogeneration Plant ◽  
Steam Power ◽  
Unit Costs ◽  
Combined Cycle Plant ◽  
The Cost

Abstract Exegetic and thermoeconomic analysis were performed for a 500-MW combined cycle plant and a 137-MW steam power plant without decomposition of exergy into thermal and mechanical exergy. A unit cost was assigned to a specific exergy stream of matter, regardless of its condition or state in this analysis. The calculated costs of electricity were almost same within 0.5% as those obtained by the thermoeconomic analysis with decomposition of the exergy stream for the combined cycle plant, which produces the same kind of product. Such outcome indicated that the level at which the cost balances are formulated does not affect the result of thermoeconomic analysis, that is somewhat contradictory to that concluded previously. However this is true for the gas-turbine cogeneration plant which produces different kinds of products, electricity and steam whose unit costs are dominantly affected by the mechanical and thermal exergy respectively.

Evaluation of the energy efficiency of combined cycle gas turbine. Case study of Tashkent thermal power plant, Uzbekistan

2016 ◽  
Vol 103 ◽  
pp. 501-509 ◽  
Author(s):  
Zarif Aminov ◽  
Nobukazu Nakagoshi ◽  
Tran Dang Xuan ◽  
Osamu Higashi ◽  
Khusniddin Alikulov
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Gas Turbine ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Combined Cycle

scholarly journals Compressed Natural Gas Technology for Alternative Fuel Power Plants

2018 ◽  
Vol 31 ◽  
pp. 01011
Author(s):  
Isworo Pujotomo
Keyword(s):  
Power Plant ◽  
Natural Gas ◽  
Gas Turbine ◽  
Power Plants ◽  
Combined Cycle ◽  
Fuel Oil ◽  
Steam Power ◽  
Compressed Natural Gas ◽  
Electrical Efficiency ◽  
Steam Power Plant

Gas has great potential to be converted into electrical energy. Indonesia has natural gas reserves up to 50 years in the future, but the optimization of the gas to be converted into electricity is low and unable to compete with coal. Gas is converted into electricity has low electrical efficiency (25%), and the raw materials are more expensive than coal. Steam from a lot of wasted gas turbine, thus the need for utilizing exhaust gas results from gas turbine units. Combined cycle technology (Gas and Steam Power Plant) be a solution to improve the efficiency of electricity. Among other Thermal Units, Steam Power Plant (Combined Cycle Power Plant) has a high electrical efficiency (45%). Weakness of the current Gas and Steam Power Plant peak burden still using fuel oil. Compressed Natural Gas (CNG) Technology may be used to accommodate the gas with little land use. CNG gas stored in the circumstances of great pressure up to 250 bar, in contrast to gas directly converted into electricity in a power plant only 27 bar pressure. Stored in CNG gas used as a fuel to replace load bearing peak. Lawyer System on CNG conversion as well as the power plant is generally only used compressed gas with greater pressure and a bit of land.

Performance Analysis of a Combined Cycle Power Plant Through Exergetic and Environmental Indices

2017 ◽  
Author(s):  
Edgar Vicente Torres González ◽  
Raúl Lugo Leyte ◽  
Martín Salazar Pereyra ◽  
Helen Denise Lugo Méndez ◽  
Miguel Toledo Velázquez ◽  
...  
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Combined Cycle ◽  
Environmental Indices ◽  
Combined Cycle Power Plant ◽  
Combustion Gases ◽  
Combined Cycle Plant ◽  
Exergetic Analysis ◽  
Gas Turbine Power Plant

In this paper is carried out a comparison between a gas turbine power plant and a combined cycle power plant through exergetic and environmental indices in order to determine performance and sustainability aspects of a gas turbine and combined cycle plant. First of all, an exergetic analysis of the gas turbine and the combined is carried out then the exergetic and environmental indices are calculated for the gas turbine (case A) and the combined cycle (case B). The exergetic indices are exergetic efficiency, waste exergy ratio, exergy destruction factor, recoverable exergy ratio, environmental effect factor and exergetic sustainability. Besides, the environmental indices are global warming, smog formation and acid rain indices. In the case A, the two gas turbines generate 278.4 MW; whereas 415.19 MW of electricity power is generated by the combined cycle (case B). The results show that exergetic sustainability index for cases A and B are 0.02888 and 0.1058 respectively. The steam turbine cycle improves the overall efficiency, as well as, the reviewed exergetic indexes. Besides, the environmental indices of the gas turbines (case A) are lower than the combined cycle environmental indices (case B), since the combustion gases are only generated in the combustion chamber.

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