Performance simulation of heat recovery steam generators in a cogeneration system

Karthikeyan, R.; Hussain, Maham; Reddy, Bale V.; Nag, Preetom

doi:10.1002/(sici)1099-114x(199804)22:5<399::aid-er366>3.3.co;2-q

Cited by 6 publications

(9 citation statements)

References 6 publications

(6 reference statements)

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“…The HRSG provides energy for steam production within a steam power plant (see Figure 1). (Karthikeyan et al, 1998) Figure 2 illustrates the temperature profile in the HRSG. Hot exhaust gas from combustion enters the superheater and flows through the evaporator and economizer and is discharged at the exit of the economizer to the surroundings.…”

Section: System Descriptionmentioning

confidence: 99%

“…For example, Karellas et al (2013) investigate the use of an HRSG to collect waste heat from cement processes. Also, Shu et al (2013) investigate the use of HRSGs with two stroke motors, Carazas et al (2011) examine the use of HRSGs in several power generating plants, Beér (2013) investigates the use of HRSGs in CO2 reduction in coal power generating plants, and Karthikeyan et al (1998) analyzed steam production rates and net-work for a cogeneration system using industrial waste heat recovery.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Oxy-Fuel Combustion on Performance of Heat Recovery Steam Generators

Self

Rosen

Reddy

2018

European Journal of Sustainable Development Research

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The performance of steam power plants, utilizing recovered waste heat from air-fuel and oxy-fuel combustion, are compared. Temperature profiles in the heat recovery steam generator (HRSG), steam production rate, network output and energy efficiency are simulated for different conditions. Investigations are made into the effect of varying pinch point on HRSG performance, network and energy efficiency for power generation utilizing oxy-fuel combustion. It is found that with increased pinch point there is an associated decrease in HRSG and steam plant efficiencies. Exhaust gas composition influences the energy efficiency of the power plant. When air-fuel and oxy-fuel combustion are compared there is a reduced amount of nitrogen in the oxidant stream in the latter case. When comparing air-fuel and oxy-fuel combustion, a considerable deviation in HRSG and steam power plant performance is exhibited, with oxyfuel combustion offering benefits in system efficiency and plant output. The exhaust gas composition at the HRSG inlet contributes significantly the performance characteristics of the system. Raising the HRSG inlet temperature also increases power generation and system efficiency. The results provide insights into the use of oxy-fuel combustion for systems utilizing HRSG for power generation while demonstrating the influence of gas composition, pinch point, and exhaust gas temperature on system performance, and suggest that oxyfuel combustion can help enhance the contribution to sustainable development of some energy systems.

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Section: System Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Oxy-Fuel Combustion on Performance of Heat Recovery Steam Generators

Self

Rosen

Reddy

2018

European Journal of Sustainable Development Research

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“…In the recent years, many authors have studied HRSGs and Combined Cycle Gas Turbines (CCGTs) from thermodynamic, thermal design, and economic points of view. Karthikeyan and colleagues simulated the performance of HRSGs in a cogeneration system. Khaliq and colleagues investigated performance analysis of an industrial waste heat‐based trigeneration system.…”

Section: Introductionmentioning

confidence: 99%

Thermo-Economic Analysis and Multiobjective Optimization of Dual Pressure Combined Cycle Power Plant with Supplementary Firing

Mokhtari

Esmaieli

Hajabdollahi

2014

Heat Trans. Asian Res.

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The heat recovery steam generator (HRSG) and duct burner are parts of a combined cycle which have considerable effect on the steam generation. The effect of the gas turbine, duct burner and HRSG on power generation is investigated to reduce exergy destruction and power loss in the gas turbine. The results show that with an increase in duct burner flow rate, pressure loss in the recovery boiler increases, steam generation increases on the HP side while it decreases on the LP side. With a reduction in the HP pinch point, thermal recovery increases while the LP pinch point does not have a significant effect. Then, power loss due to pressure drop in the gas turbine and the electricity cost are considered as two objective functions for optimization. Finally, the sensitivity analysis on ambient temperature, compressor pressure ratio, fuel lower heating value, duct burner fuel rate, condenser pressure and main pressure are performed and results are reported. It is concluded that with an increment in compressor pressure ratio, the duct burner flow rate and consequently steam generation increases while electricity cost decrease.

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“…Karthikeyan et al [2] simulated the performance of HRSGs in a cogeneration system. Khaliq et al [3] investigated performance analysis of an industrial waste heat-based trigeneration system.…”

Section: Introductionmentioning

confidence: 99%

Applying different optimization approaches to achieve optimal configuration of a dual pressure heat recovery steam generator

Esmaieli

Keshavarz

Shakib

et al. 2012

Int. J. Energy Res.

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SUMMARY The optimal design for heat recovery steam generator (HRSG) should be chosen based on technical and economic considerations. Therefore, parameters that are related to thermodynamic and economic aspects should be considered in optimization approaches. It is worth mentioning that one of the significant issues in the HRSG design is the diversity of arrangements between various components (economizer, evaporator, and superheater), which absolutely affect the HRSG performance. According to these facts, in the present article, different arrangements of a dual pressure HRSG are analyzed, and the economizer at the high‐pressure level is divided into two parts; these arrangements are optimized by applying different optimization approaches to achieve the optimal configuration. These approaches include the reduction of gas pressure drop, the reduction of generated steam cost and the consideration of both approaches as the third approach. These three approaches are also considered to perform economic and thermodynamic optimization. With regard to the limitations of optimization such as the pinch and approach point, seven different configurations are considered. First, a comprehensive model is developed for calculating thermodynamic, heat transfer, and pressure loss. To perform a thorough optimization, both thermodynamic and geometric variables as well as diversity of various arrangements is considered using genetic algorithm. The results of the optimization study show that the best arrangement is not unique, and each arrangement has different characteristics. Hence, the best arrangement for the HRSG is chosen according to the importance of the objective functions. Copyright © 2012 John Wiley & Sons, Ltd.

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Performance simulation of heat recovery steam generators in a cogeneration system

Cited by 6 publications

References 6 publications

Effects of Oxy-Fuel Combustion on Performance of Heat Recovery Steam Generators

Effects of Oxy-Fuel Combustion on Performance of Heat Recovery Steam Generators

Thermo-Economic Analysis and Multiobjective Optimization of Dual Pressure Combined Cycle Power Plant with Supplementary Firing

Applying different optimization approaches to achieve optimal configuration of a dual pressure heat recovery steam generator

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