Studying the effects of combining internal and external heat recovery on techno-economic performances of gas–steam power plants

Carapellucci, Roberto; Giordano, Lorena

doi:10.1016/j.enconman.2015.09.008

Cited by 17 publications

(2 citation statements)

References 15 publications

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“…As presented in previous works [1][2][3][4][5] the absorption refrigeration systems with thermal generator demonstrate high efficiency with low power consumption, so here, their modeling and performance are investigated. In reference [1] a dual pressure combined cycle based on a Corresponding author: Hadizadeh.a@gmail.com a regenerative gas turbine was designed using GateCycle software and the effects of gas-cycle regeneration and gas turbine operative parameters on steam-gas power plants were investigated. Vandani et al [2] evaluated the impacts of implementation of heat recovery system by genetic algorithm and PSO on the steam power plant.…”

Section: Introductionmentioning

confidence: 99%

Evaluating and improving the efficiency of steam power plants using chillers

Hadizadeh

Paknafs

Javaherdeh

et al. 2017

Mechanics & Industry

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One of the indispensable technologies to produce electricity with high efficiency is using absorption cooling system instead of mechanical vapor compression (MVC) cooling system. In this paper, firstly heating and cooling loads are calculated for experimental model development for combined cycle power plant of Parehsar, located in province Guilan. Then according to this model, thermal energy needed for heat supporting of absorption thermal generator is computed and the appropriate chiller is chosen in order to secure cooling of model spaces. In addition, for the actual case study, the portion of generated low and high pressure steam of heat recovery steam generator (HRSG) and Turbine is investigated for the absorption chillers used in residential space cooling of power plant. Results indicate that the steam extraction of HP-Turbine approach is more effective than the other approaches for improving the power planet energy efficiency. In addition, parametric study indicates the effects of different parameters, such as steam to gas mass flow rate ratio, fraction of steam extraction from the exhaust of LP line in HRSG for the generator of absorption chillers and inlet LP and HP steam turbine temperature on the performance of present power plant. Finally, the relative advantage of using absorption cooling over mechanical vapor compression (MVC) cooling in combined cycle power plant and its role in improvement of power plant efficiency is demonstrated.

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Section: Introductionmentioning

confidence: 99%

Evaluating and improving the efficiency of steam power plants using chillers

Hadizadeh

Paknafs

Javaherdeh

et al. 2017

Mechanics & Industry

View full text Add to dashboard Cite

show abstract

“…The overall heat transfer coefficient formula was utilized to develop a computer code of the HRSG off-design model and can be used in both model-based diagnostics and performance evaluation systems [21]. The methodology has also been used to simulate the HRSG of a proposed combined-cycle system under the off-design condition [22].…”

Section: Introductionmentioning

confidence: 99%