steam turbine Articles
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Numerical simulation of a large power steam turbine run-up
The purpose of this paper is to propose a new behavioural evaluation of a large steam turbine during the run-up period based on a numerical simulation of the transient fluid dynamic processes that occur in the turbine during start-up. The transient process begins when the run-up valve starts its opening trip and ends when the rotor speed achieves the required value. This original approach is a ...
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Steam Turbine NDT Inspection Best Practices
Steam turbines are elegant in their simplicity. Water turns to steam; steam rotates the turbines; energy is transformed into electricity. But this simplicity belies incredible complexities in their operations and tiny intricacies in their build. These intricacies demand a rigorous testing practice to make sure that the turbines work safely. Increasingly, these turbines are tested using Phased ...
By Zetec, Inc
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The 700?C steam turbine power plant ? status of development and outlook
This paper appraises the current development status of the 700?C steam power plant under consideration of process optimisation as well as design aspects of the steam turbine and steam generator. The results for a compact arrangement of the steam turbine and steam generator are also presented. Based on a cycle analysis, a net efficiency between 49.3% and 51.4% can be achieved with the 700?C steam ...
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Project - Replacing Hydrazine With Polyamines for Alumina Refinery Boilers
Introduction Alum SA, is the sole alumina refinery in Romania, with a production capacity of 600.000 tons per year, and is part of one of the largest vertically integrated aluminum manufacturers group in Europe, ALRO, which has been operating since 1965. ALRO GROUP mainly uses Alum SA’s output for aluminum production. Plant owner: Alum SA, Tulcea, Romania Plant type: Alumina Factory ...
By Fineamin SA
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Modelling and exergoeconomic based design optimisation of combined power plants
In this research a combined cycle power plant (CCPP) which can provide 80 MW of electrical power has been studied. The design parameters of the plant were chosen as: compressor pressure ratio, compressor isentropic efficiency, gas turbine isentropic efficiency, and turbine inlet temperature, pinch difference temperature, steam turbine inlet temperature, steam turbine isentropic efficiency, ...
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Cogeneration steam power desalting plants using steam turbines
This paper presents the reasons and merits of using cogeneration generation power desalting plants (CPDP), the different methods used to rate their performance, and their drawbacks. The ratings of the CPDP are crucial, because the fuel cost allocation between the water and power depends on the rating method used. The ratings are usually based on the first and the second laws of thermodynamics. A ...
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Thermodynamic and thermoeconomic comparison of combined cycle cogeneration systems
In this paper, several configurations of combined cycle cogeneration systems are investigated by energy, exergy and thermoeconomic analyses. In each of these configurations, varying steam demand is considered rather than fixed steam demand. Among the different approaches for thermoeconomic analysis in the literature, the specific exergy costing method is applied. Since the systems have more than ...
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Saint Mary’s Hospital - 7.75 MW CHP System - Case Study
Quick Facts LOCATION: Rochester, Minnesota MARKET SECTOR: Healthcare FACILITY SIZE: 3 Million Square Feet, 960 Licensed Beds FACILITY PEAK LOADS: Electric: 12.0 Megawatts Heating: 130,000 lb/hr Steam Cooling: 7,500 Tons TOTAL CHP GENERATING CAPACITY: 7.75 Megawatts HEAT RECOVERY RATE: 24,000 lb/hr of 250 psig Steam HEAT RECOVERY UTILIZATION: Building heating or cooling, medical equipment ...
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Exergoeconomic optimisation of steam power plant
The second law of thermodynamics combined with economics forms a powerful tool for systematic analysis and assessment of energy systems. This paper presents an exergoeconomic optimisation of 50 MW steam turbine power plant associated with a large fertiliser industrial unit through Thermoeconomic Evaluation and Optimisation (TEO) method, and identifies the losses in various components. As the ...
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Full steam ahead: a look at steam Turbines and how the Speed of development is accelerating
A whole ecosystem is built around steam turbine technology, consisting of manufacturers, service providers and owner operators. The technology has grown from simple marine applications to many different types of power generation, processing and other applications. Major players have pursued several approaches to growth and new product development: mergers & acquisitions; licensing and core ...
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Development of a tribological failure knowledge model
Many of the component failures occurring in service can be delayed by better incorporation of tribological principles into engineering design and maintenance. However, the concept of tribology has not yet penetrated successfully into the industry in general and there is an urgent need for the practical tribology design criteria and transference of tribological knowledge to the engineering ...
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Quantifying Combined Heat and Power (CHP) activity
In CHP plants without heat rejection facilities power, output is complementary to the recovery of heat, and all activity is cogeneration. CHP plants with heat rejection facilities can operate a mix of cogeneration and condensing activities. Quantifying the energy flows of both activities properly requires knowledge of the design power-to-heat ratios of the CHP processes (steam and gas turbines, ...
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Thermodynamic analysis of an integrated gasification combined cycle power plant: effect of nitrogen supply on system performance
A comprehensive thermodynamic analysis of a conceptual integrated coal gasification combined cycle power plant is presented. Energy and exergy efficiencies and exergy destructions of each sub–unit are calculated. The effect of nitrogen, which is supplied from the Air Separation Unit (ASU) of the gasification unit to the combustion chamber of the gas turbine (GT) cycle, on system performance is ...
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Exergoeconomic analysis of a Kalina cycle coupled coal–fired steam power plant
This paper presents exergoeconomic analysis of a Kalina cycle coupled coal–fired steam power plant using specific exergy costing (SPECO) methodology. Cost–balance and auxiliary equations are developed and solved. The results indicate that in the topping cycle, the boiler and the turbine contribute maximum to the formation of product cost. High value of exergoeconomic factor for the boiler ...
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Film Forming Water Treatment at SAIDEF Incineration Power Plant - Case Study
"We have been using the FINEAMIN products for our water treatment since 2007 and during this time we have maintained the operating parameters. No corrosion was present, nor any other damage. Our turbine is regularly inspected every five years by a third party. We are extremely satisfied with the FINEAMIN products and with H2O Facilities services." Client name: Saidef SA, Fribourg Plant type: ...
By Fineamin SA
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Combined Heat and Power (CHP) essentials
'CHP essentials' introduces the concept of power and heat 'production possibility sets', starting at the cradle of CHP, i.e., the thermal power generation plant. The latter always occasions 'fatal' heat that is either recovered (the 'merit' of CHP) or wasted (condensing). This split paves the way to defining the production possibility sets of CHP plants, shown for steam turbines, internal ...
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Steam Turbine Rotor Transient Thermo-Structural Analysis and Lifetime Prediction
Market requirements for faster and more frequent power unit start-up events result in a much faster deterioration of equipment, and a shorter equipment lifespan. Significant heat exchange occurs between steam and turbine rotors during the start-up process and even more intensive heat exchange takes place during the condensation phase in cold start-up mode, which leads to further thermal stresses ...
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Case Study - Aluto Langano Power Plant Rehabilitation
Aluto Langano, Ethiopia – 2007 The Aluto Langano Geothermal Pilot Plant (ALGPP) is located on the Aluto volcanic complex of the Ethiopian Rift valley, close to the eastern escarpment between Lake Langano and Lake Ziway, some 200 km southeast of Addis Ababa. The Aluto volcanic complex is a young acidic system consisting of domes, lava, and pyroclastic interbeds. The geothermal field was ...
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Project - Al Taweelah Power Plant, UAE
Boiler Water Treatment Located NE of Abu Dhabi, UAE, Taweelah Power Plant is a desalinization facility generating power with the help of gas & steam turbines. The power plant has been using polyamines to treat their steam boilers water for more than 14 years. 10 boilers x 600 t/h each 100 bar 540°C ...
By Fineamin SA
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Hazira Power Plant : India’s first Independent Power Plant in Gujarat - Case Study
In October 1997, Essar commissioned India’s first Independent Power Plant (IPP) after the Government of India had liberalised its power policy. Originally conceived to cater only to Essar Steel’s requirements, the plant was later converted to an independent producer with a capacity of 515 MW. Using cutting-edge technology, it was no ordinary power plant. The Hazira IPP was a ...
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