Exergetic Evaluation and Optimization of Combined Heat and Power (CHP) Plant of 20.7 MW Capacities under Varying Load Conditions: A Case Study

Bapat, Shrikant Manohar; Gokak, Gururaj

doi:10.18280/ejee.210212

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…Energy output (Eo), kW = ṁ 1 h 1 + ṁ 2 h 2 + ṁ 3 h 3 (10) where, m2, is the mass flow rate of steam at extraction stage 1 from the turbine. h2, is the specific enthalpy at corresponding stage 1 inlet pressure and temperature.…”

Section: Methodsmentioning

confidence: 99%

“…Shcheklein and Dubinin [9] offered a novel approach by transforming diesel fuel into synthesis gas for the production of electrical and heat power. Bapat et al [10] underlined the importance of energy from a thermodynamic perspective as a significant performance measure for CHP systems, using a 20.7 MW CHP system as a case study. Gürtürk and Oztop [11] reported an energy efficiency of 84.65% for the circulating fluidized bed boiler, suggesting that 84.65% of the input energy was efficiently converted into usable work.…”

Section: Introductionmentioning

confidence: 99%

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Constant Steam Inlet Conditions and their Impact on the Thermal Efficiency of a Cogeneration Power Plant

Sumanraju,

Rao,

Sanke

2023

IJHT

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Cogeneration, a process facilitating the simultaneous production of electricity and useful heat from a singular energy source, has been investigated in this study. The primary objective of this research was to assess the performance dynamics of a cogeneration power plant under constant steam inlet conditions. Results revealed that the thermal efficiency (Ƞth) oscillated between 23.76% and 24.44%. The maximum thermal efficiency recorded was 24.44%, corresponding to an Energy Utilization Factor (EUF) of 0.85, under an inlet temperature of 502℃. Conversely, the lowest thermal efficiency measured was 23.76%, with an EUF of 0.72, observed at an inlet temperature of 503℃. These findings underscore the system's proficient energy utilization, notwithstanding minor fluctuations in steam parameters, such as inlet and various stages of operating conditions. A positive relationship was established between the heat-to-power ratio and the overall efficiency, which varied between 70.59% and 76.49% across different pressure values. The peak efficiency was noted at 84.7 kgf/cm 2 . Moreover, the EUF exhibited a range from 0.72 to 0.85, indicative of the system's energy use efficiency. A higher EUF value implies a more effective use of energy. At an EUF of 0.85, the cogeneration power plant demonstrated an impressive overall efficiency of 75.13%, signifying highly efficient energy conversion and utilization. However, at an EUF of 0.72, the overall efficiency declined to 70.59%, pointing to reduced efficiency in energy utilization. These results emphasize the critical role of maintaining a constant mass flow rate of steam and optimizing inlet parameters to enhance the efficiency of cogeneration power plants. Consequently, this study provides valuable insights into the operational optimization of cogeneration power plants.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Constant Steam Inlet Conditions and their Impact on the Thermal Efficiency of a Cogeneration Power Plant

Sumanraju,

Rao,

Sanke

2023

IJHT

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“…The high pressure (HP) level has the largest pressure difference between the blades, which causes the most noticeable airflow bending. At the low-pressure (LP) level, where the blades are, it is also noticeable [20].…”

Section: Gas Turbine Blade Design Considerations 31 Aerodynamic Designmentioning

confidence: 99%

Design and Analysis of High-Performance Gas Turbine Blades for Power Generation Applications

2023

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Gas turbines play a vital role in power generation applications due to their high efficiency, compact design, and ability to operate in various conditions. Due to their great efficiency and small size, gas turbines are frequently employed in power production applications. The shape and properties of a gas turbine's blades have a big impact on how well it performs. This research paper offers a thorough examination of high-performance gas turbine blade design and analysis with a focus on applications in power generation. The study discusses the main factors, difficulties, and approaches involved in designing gas turbine blades, as well as the analysis methods applied to gauge their reliability and performance. The goal of this research is to optimise the blade design while taking into account aspects like aerodynamics, heat transfer, material qualities, and manufacturing constraints in order to increase turbine efficiency, durability, and operating flexibility. The findings of this study will contribute to the development of advanced gas turbine blade designs that can significantly improve the overall performance of power generation systems.

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Comparison of six gas turbine power cycle, a key to improve power plants

Golneshan

Nemati

2021

Mechanics & Industry

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It is required to sake methods to improve the power plant performance. Most of the proposed methods can be commenced only in the design stapes. However, the main question of this study is “What can we do to improve the performance of a running power plant?” The first answer to this question is that monitoring the site and periodic overhaul can keep a power plant in its acceptable condition. However, this answer is very qualitatively and needs more precise information like which parameters shall be monitored or which equipment needs more care in the overhaul. In this study, important parameters and the method of their calculations are introduced that must be monitored and compared. Six similar gas turbine power cycles were selected to be compared deeply during a day in this study. In this way, many data were collected every five minutes. Unlike most of the previous studies, this one concerns with maintenance policy and repair strategy. Results of this comparison lead to answer to these questions that which equipment needs special care? Finally, it was shown that in each unit, which equipment needs more attention and which one can be considered as a standard for the others.

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Exergetic Evaluation and Optimization of Combined Heat and Power (CHP) Plant of 20.7 MW Capacities under Varying Load Conditions: A Case Study

Cited by 3 publications

References 17 publications

Constant Steam Inlet Conditions and their Impact on the Thermal Efficiency of a Cogeneration Power Plant

Constant Steam Inlet Conditions and their Impact on the Thermal Efficiency of a Cogeneration Power Plant

Design and Analysis of High-Performance Gas Turbine Blades for Power Generation Applications

Comparison of six gas turbine power cycle, a key to improve power plants

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