Dynamic Performance of Fossil-Fueled Power Plants

Armor, A.F.; Shor, S.W.W.; DiDomenico, P. N.; Bennett, Whit; Smith, L. P.

doi:10.1109/tpas.1982.317092

Cited by 10 publications

(3 citation statements)

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“…Therefore, it is highly desirable to design future superheaters while considering creep and fatigue damages resulting from expected increased cycling operations. While simple models of superheaters are available in the literature, 9 these models do not account for the complex flow arrangement and heat transfer mechanisms in superheaters. In addition to the convective heat transfer, radiative heat transfer can also take place in superheaters due to the high temperature of the flue gas.…”

Section: ■ Introductionmentioning

confidence: 99%

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Design and Multiobjective Dynamic Optimization of Superheaters for Load-Following Operation in Pulverized Coal Power Plants

Le,

Ma,

Bhattacharyya

et al. 2023

Ind. Eng. Chem. Res.

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Pulverized coal power plants are increasingly participating in aggressive load-following markets, therefore necessitating the design and optimization of primary superheaters for flexible operations. These superheaters play a critical role in maintaining the final steam temperature of the steam turbine, but their high operating temperatures and pressures make them prone to failure. This study focuses on the optimal design of future-generation primary superheaters for a fast load-following operation. To achieve this, a detailed first-principles model of a primary superheater is developed along with submodels for stress and fatigue damage. Two single-objective optimization problems are solved: one for minimizing metal mass as a measure of capital cost and another for minimizing pressure drop on the steam side as a measure of operating cost. Since these objective functions conflict, a multiobjective optimization problem is executed using a weighted metric methodology. Results from these optimization studies show that the base case design can violate stress constraints during the aggressive load-following operation. However, by optimizing the design variables, it is possible to not only satisfy tight stress constraints but also achieve the desired number of allowable cycles and adhere to the steam outlet temperature constraint. In addition, the optimized design reduces either the metal mass or the steam-side pressure drop compared to that of the base case design. Importantly, this approach is not limited to primary superheaters alone but can also be applied to similar high-temperature heat exchangers in other applications.

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Section: ■ Introductionmentioning

confidence: 99%

“…While simple models of superheaters are available in the literature, these models do not account for the complex flow arrangement and heat transfer mechanisms in superheaters. In addition to the convective heat transfer, radiative heat transfer can also take place in superheaters due to the high temperature of the flue gas .…”

Section: Introductionmentioning

confidence: 99%

Design and Multiobjective Dynamic Optimization of Superheaters for Load-Following Operation in Pulverized Coal Power Plants

Le,

Ma,

Bhattacharyya

et al. 2023

Ind. Eng. Chem. Res.

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“…Due to market forces, the use of fossil fuel power plants (FFPP) in load-following responsibilities has increased [1]. In addition, severe standards for the conservation and life extension of important plant equipment must be met.Control of all these vital parameters in a 500MW thermal power plant is important.…”

Section: Introductionmentioning

confidence: 99%

Study on the Impact of Various Optimal Process Parameters of a 500 MW Boiler

P¹,

P²,

Wessley³

et al. 2021

Proceedings of the First International Conference on Combinatorial and Optimization, ICCAP 2021, December 7-8 2021, Chennai, In

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Power plants face many challenges in today's global scenario, including minimizing costs. Sustained expansion in energy generation capabilities is a sign of a country's expanding affluence. Electricity now pervades practically every aspect of human life. Coal has long been an important source of fuel for power generation. There has been no consideration paid to the contaminants created or the coal quality. The qualities of coal have an impact on the design and performance of thermal power plants, as well as the cost of electricity generation. The cost of coal, as well as the plant's construction, are all determined by the superiority of the coal. Because the worth of the coal has an impact on practically every aspect of plant functioning, care must be taken during coal changeover. In this environment, a comprehensive approach to the optimal operation of power plants is critical for utilities competing in liberalised markets to survive. A plant's control system can considerably improve performance and provide solutions to some of the issues outlined above. In light of this, the authors were inspired to develop a better strategy for dealing with difficulties in a fossil fuel power plant (FFPP).

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