Comparative performance analysis of four different combined power and cooling systems integrated with a topping gas turbine plant

Nondy, J.; Gogoi, T.K.

doi:10.1016/j.enconman.2020.113242

Cited by 33 publications

(8 citation statements)

References 24 publications

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“…In the ACS, as usual assumptions are made similar to those presented in Ref. [17] except the generator temperature, which is taken as 75 ºC here. The PTSC modelling involves calculation of HTF temperature at PTSC outlet against known values of solar radiation intensity, HTF flow rate and temperature at PTSC inlet.…”

Section: System Modelling and Assumptionsmentioning

confidence: 99%

“…The procedure described in Refs. [16,17] is only used for iterative calculation of the ACS cooling capacity (𝑄 ̇𝐸). The coefficient of performance (COP) of the ACS is defined as usually.…”

Section: System Modelling and Assumptionsmentioning

confidence: 99%

“…Similarly, the ACS model, which is implemented in this study by using water-LiBr as working solution pair, is the one that was described in detail in Ref. [17] including the ACS model validation. Therefore, the model validation of the presented systems is not repeated again in this paper.…”

Section: Model Validationmentioning

confidence: 99%

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Performance of a combined power and cooling system under solar, solar storage and storage mode of operations

Gogoi

Dutta

2022

Journal of Energy Systems

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In this study, the performances of a combined power and cooling system are compared at solar, solar storage (SS), and storage mode of operations using therminol-LT (TLT) and solar salt as storage media. In the solar mode, the entire water heated in a collector field is used to drive subsequently an organic Rankine cycle and an absorption cooling system. In the SS mode during high radiation (950 W/m 2 ), thermal energy storage (TES) is used to store a fraction of hot water for later use during the storage mode at nighttime. The system produced 1.1 MW of power and 2.455 MW of cooling during the solar mode at low radiation (640 W/m 2 ). At the SS mode, with TLT as a storage fluid, the power increased to double, however the cooling reduced by 12.22%. During the storage mode, the TLT based system produced 0.553 MW of cooling. During the SS mode with solar salt, the power and cooling increased, however, the nighttime cooling reduced significantly with solar salt. The total energy and the overall system efficiency was more with solar salt compared to those of TLT. The energy output and the system efficiency were the maximum at 950 W/m 2 without TES.

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Section: System Modelling and Assumptionsmentioning

confidence: 99%

Section: System Modelling and Assumptionsmentioning

confidence: 99%

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Performance of a combined power and cooling system under solar, solar storage and storage mode of operations

Gogoi

Dutta

2022

Journal of Energy Systems

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“…They identified that nearly 29% of the exergy destruction in the cycle and the corresponding cost rates are endogenously avoidable. Nondy et al [30] thermodynamically evaluated four GT-based cogeneration systems, in which the SEAC is driven by the heat from the SRC or exhaust gas. They concluded that the system with two SEACs driven, respectively, by steam and exhaust heat is the most appropriate from the viewpoints of energy and exergy.…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Liu,

Ren,

Zhang

et al. 2023

Processes

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Considering energy conversion efficiency, pollution emissions, and economic benefits, combining biomass with fossil fuels in power generation facilities is a viable approach to address prevailing energy deficits and environmental challenges. This research aimed to investigate the thermodynamic and exergoeconomic performance of a novel power and cooling cogeneration system based on a natural gas–biomass dual fuel gas turbine (DFGT). In this system, a steam Rankine cycle (SRC), a single-effect absorption chiller (SEAC), and an organic Rankine cycle (ORC) are employed as bottoming cycles for the waste heat cascade utilization of the DFGT. The effects of main operating parameters on the performance criteria are examined, and multi-objective optimization is accomplished with a genetic algorithm using exergy efficiency and the sum unit cost of the product (SUCP) as the objective functions. The results demonstrate the higher energy utilization efficiency of the proposed system with the thermal and exergy efficiencies of 75.69% and 41.76%, respectively, while the SUCP is 13.37 $/GJ. The exergy analysis reveals that the combustion chamber takes the largest proportion of the exergy destruction rate. The parametric analysis shows that the thermal and exergy efficiencies, as well as the SUCP, rise with the increase in the gas turbine inlet temperature or with the decrease in the preheated air temperature. Higher exergy efficiency and lower SUCP could be obtained by increasing the SRC turbine inlet pressure or decreasing the SRC condensation temperature. Finally, optimization results indicate that the system with an optimum solution yields 0.3% higher exergy efficiency and 2.8% lower SUCP compared with the base case.

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“…Simultaneously, the reduction of greenhouse gas emissions requires highly efficient power plant systems. Gas turbine power plants are one of the large-scale power generation techniques and have become low-emission and efficient energy systems by combining heat recovery steam generators and steam turbines (Nondy and Gogoi, 2020). In addition, highly effective gas turbines should have a high inlet temperature accompanied by superior thermal protection of hot section components (Zhang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the film cooling performance by triangular-shaped thin plates on inclined cylindrical holes

Choi

Kwon

et al. 2022

Front. Energy Res.

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Experimental investigations have been conducted to improve the cooling effectiveness of film-cooling technology. A multiple row of cylindrical holes at the flat surface was considered by inclining the holes at 35° along the streamwise direction. A low-speed wind tunnel with the main flow speed of 10 m/s was devised to create a cross flow at a Reynolds number of 196,167 and five blowing ratios of 0.3, 0.5, 0.7, 1, and 2. The proposed triangular-shaped thin plate and flop at the cylindrical film cooling hole were investigated using flow visualization and thermographic techniques. The resulting cooling performances were also experimentally evaluated and compared with respect to the different film-cooling hole configurations. The typical film cooling hole configuration of cylindrical hole shape shows the cooling effectiveness of 0.1 at blowing ration of 1.0. It should be denoted that this cooling effectiveness is exemplary value of wide range of gas turbine applications. We also experimentally evaluates the cooling effectiveness in order to valid our experimental method. Meanwhile, with triangular-shaped thin plate-flop, the flow detachment is successfully prevented with requiring 8% increase of discharge coefficient. In addition, the film flow is stable even at the distant downstream, resulting in enhanced cooling performance compared to the cylindrical and triangular-shaped thin plate. Consequently, a 242.7% improvement in film cooling effectiveness can be achieved with a triangular-shaped thin plate-flop than with a cylindrical hole owing to its enhanced film coverage.

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Comparative performance analysis of four different combined power and cooling systems integrated with a topping gas turbine plant

Cited by 33 publications

References 24 publications

Performance of a combined power and cooling system under solar, solar storage and storage mode of operations

Performance of a combined power and cooling system under solar, solar storage and storage mode of operations

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Experimental investigation of the film cooling performance by triangular-shaped thin plates on inclined cylindrical holes

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