Heat Recovery Steam Generators of Binary Combined-Cycle Units

2021 ◽  
Vol 68 (6) ◽  
pp. 452-460
Author(s):  
P. A. Berezinets ◽  
G. E. Tereshina
Keyword(s):  
Heat Recovery ◽  
Combined Cycle ◽  
Steam Generators

scholarly journals Gas Turbine Heat Recovery Steam Generators for Combined Cycles Natural or Forced Circulation Considerations

1988 ◽  
Author(s):  
Akber Pasha
Keyword(s):  
Gas Turbine ◽  
Steam Generator ◽  
Heat Recovery ◽  
Power Plants ◽  
Natural Circulation ◽  
Combined Cycle ◽  
Heat Recovery Steam Generator ◽  
Steam Generators ◽  
Forced Circulation ◽  
Gas Turbine Exhaust

In recent years the combined cycle has become a very attractive power plant arrangement because of its high cycle efficiency, short order-to-on-line time and flexibility in the sizing when compared to conventional steam power plants. However, optimization of the cycle and selection of combined cycle equipment has become more complex because the three major components, Gas Turbine, Heat Recovery Steam Generator and Steam Turbine, are often designed and built by different manufacturers. Heat Recovery Steam Generators are classified into two major categories — 1) Natural Circulation and 2) Forced Circulation. Both circulation designs have certain advantages, disadvantages and limitations. This paper analyzes various factors including; availability, start-up, gas turbine exhaust conditions, reliability, space requirements, etc., which are affected by the type of circulation and which in turn affect the design, price and performance of the Heat Recovery Steam Generator. Modern trends around the world are discussed and conclusions are drawn as to the best type of circulation for a Heat Recovery Steam Generator for combined cycle application.

The Upgrading of the Combined-Cycle Cogeneration Plant with Heat-Recovery Steam Generators for Large Cities of the Russian Federation

2021 ◽  
Vol 68 (2) ◽  
pp. 110-116
Author(s):  
M. A. Vertkin ◽  
S. P. Kolpakov ◽  
V. E. Mikhailov ◽  
Yu. G. Sukhorukov ◽  
L. A. Khomenok
Keyword(s):  
Russian Federation ◽  
Heat Recovery ◽  
Combined Cycle ◽  
Cogeneration Plant ◽  
Steam Generators ◽  
Large Cities ◽  
The Russian Federation

Combined Cycle Plants With Frame 9F Gas Turbines

1991 ◽  
Vol 113 (4) ◽  
pp. 475-481 ◽  
Author(s):  
P. Lugand ◽  
C. Parietti
Keyword(s):  
Power Generation ◽  
Flue Gas ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Catalytic Reduction ◽  
Pressure Level ◽  
Combined Cycle ◽  
Size Factor ◽  
Nox Emissions ◽  
Steam Generators

The new 200 MW class MS 9001F gas turbines allow combined cycle plants to reach even higher output levels and greater efficiency ratings. Size factor and higher firing temperatures, with a three-pressure level steam reheat cycle, offer plant efficiencies in excess of 53 percent. Heat recovery steam generators have been designed to accommodate catalytic reduction elements limiting flue gas NOx emissions to as low as 10 ppm VD (15 percent O2). A range of steam turbine models covers the different possible configurations. Various arrangements based on the 350 or 650 MW power generation modules can be optimally configured to the requirements of each site.

Analysis of Cycling Impacts on Combined Cycle Heat Recovery Steam Generators and Evaluating Future Costs of Countermeasures to Reduce Impacts

2008 ◽  
Author(s):  
Steven A. Lefton ◽  
Philip M. Besuner ◽  
G. Paul Grimsrud ◽  
Dwight D. Agan ◽  
Jeffrey L. Grover
Keyword(s):  
Fatigue Life ◽  
Cost Analysis ◽  
Heat Recovery ◽  
Combined Cycle ◽  
Steam Generators ◽  
Benefit Cost Analysis ◽  
Benefit Cost

This paper will discuss cycling heat recovery steam generators (HRSG) at combined cycle plants and observed damaging tube temperature transients in the HRSG. APTECH’s cost of cycling methodology is discussed. HRSG transients are selected and the HRSG tube stresses are analyzed using a computerized model to show the effects of cycling on fatigue life of the tubing. Then selected cycling countermeasures to reduce the effect of these transients will be discussed. A method that calculates the benefits of reducing the cyclic cost of the HRSG component damage will be presented along with a benefit-cost analysis.

Exergoeconomic Analysis of a Combined Cycle of Three Levels of Pressure

2016 ◽  
Author(s):  
Edgar Vicente Torres González ◽  
Raúl Lugo-Leyte ◽  
Martín Salazar-Pereyra ◽  
Miguel Toledo Velázquez ◽  
Helen Denise Lugo-Méndez ◽  
...  
Keyword(s):  
Power Plant ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Systematic Approach ◽  
Combined Cycle ◽  
Exergetic Efficiency ◽  
Steam Generators ◽  
Combined Cycle Power Plant ◽  
Exergoeconomic Analysis ◽  
The Cost

This paper presents an exergoeconomic analysis of the combined cycle power plant Tuxpan II located in Mexico. The plant is composed of two identical modules conformed by two gas turbines generating the required work and releasing the hot exhaust gases in two heat recovery steam generators. These components generate steam at three different pressure levels, used to produce additional work in one steam turbine. The productive structure of the considered system is used to visualize the cost formation process as well as the productive interaction between their components. The exergoeconomic analysis is pursued by 1) carrying out a systematic approach, based on the Fuel-Product methodology, in each component of the system; and 2) generating a set of equations, which allows compute the exergetic and exergoeconomic costs of each flow. The thermal and exergetic efficiency of the two gas turbines delivering 278.4 MW are 35.16% and 41.90% respectively. The computed thermal efficiency of the steam cycle providing 80.96 MW is 43.79%. The combined cycle power plant generates 359.36 MW with a thermal and exergetic efficiency of 47.27% and 54.10% respectively.

Modeling of a 27 MW Combined Cycle Cogeneration Plant With Central Cooling Facility

2003 ◽  
Author(s):  
Sandeep Nayak ◽  
Erol Ozkirbas ◽  
Reinhard Radermacher
Keyword(s):  
Natural Gas ◽  
Electric Power ◽  
Steam Turbine ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Combined Cycle ◽  
Cogeneration Plant ◽  
Steam Generators ◽  
Centrifugal Chillers ◽  
Chilled Water

This paper describes the modeling of a 27 MW combined cycle cogeneration plant with 10,000 tons chilled water central cooling facility. The cogeneration plant is designed to provide heating, cooling and electricity from a single fuel source viz., natural gas, though the gas turbines do have an inbuilt dual fuel combustion system. The topping cycle of the combined cycle cogeneration plant consists of two gas turbines each producing 11 MW of electric power at full load. The energy of the exhaust gases from these gas turbines is then utilized to generate steam in two heat recovery steam generators. The heat recovery steam generators are duct fired using natural gas to meet the peak steam load. In the bottoming part of the combined cycle, the steam from the heat recovery steam generators is expanded in a backpressure steam turbine to supply steam to the campus at about 963 kPa, generating an additional 5.5 MW of electric power in this process. There is no condenser wherein the campus acts as a sink for the steam. The central cooling facility is designed to supply 10,000 tons of chilled water out of which 3800 tons is supplied by two steam driven centrifugal chillers, which utilize a part of the steam supplied to the campus and the remaining by the centrifugal electric chillers. The combined cycle cogeneration plant along with the central chilled watercooling facility is modeled in a commercially available flexible cogeneration software package. The model is built based on the design data available from design manuals of gas turbines, heat recovery steam generators, backpressure steam turbine and centrifugal chillers. A parametric study is also done on the model to study the effect of different parameters like fuel flow rate, temperature etc on the output of the turbine and efficiency of the plant. Modeling of the inlet air-cooling of the gas turbine using an absorption chiller and electric chiller is also presented. Finally the paper discusses these results.

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