Energy and exergy analyses of power generation via an integrated biomass post-firing combined-cycle

2015 ◽  
Vol 3 (1/2/3) ◽  
pp. 57
Author(s):  
Hassan Athari ◽  
Saeed Soltani ◽  
Seyed Mohammad Seyed Mahmoudi ◽  
Marc A. Rosen ◽  
Tatiana Morosuk
Keyword(s):  
Power Generation ◽  
Combined Cycle ◽  
Energy And Exergy ◽  
Exergy Analyses

scholarly journals Energy and exergy estimation for a combined cycle of solid CO2 production and NH3-H2O single effect absorption chiller

2016 ◽  
Vol 19 (1) ◽  
pp. 61-69 ◽  
Author(s):  
Phu Minh Nguyen
Keyword(s):  
Cooling System ◽  
Cooling Water ◽  
Combined Cycle ◽  
Co2 Production ◽  
Absorption Chiller ◽  
Cooling Water Temperature ◽  
Cycle Simulation ◽  
Energy And Exergy ◽  
Single Effect ◽  
Exergy Analyses

In order to reduce the compression power, to use an integrated thermal-driven cycle, and to mitigate the CO2 content in the air, a new combined cycle of absorption chiller and vaporcompression refrigeration cycle to produce carbon dioxide dry ice was devised and analyzed. In this study, the energy and the exergy analyses of the combined cycle were presented. The combined cycle simulation was carried out by using EES (Engineering Equation Solver) program. The CO2 condensation pressure and the generator temperature were considered as key parameters. Results show that the total compression and pumping power using the present combined cycle can be reduced remarkably, amounting to 44.4 %, in comparison with that in the conventional ammonia cooling system. Most of the irreversibility occur in the absorption system and the irreversibility of the absorber has the largest portion. The temperature reduction of the solution or increase in the cooling water temperature can improve the irreversibility of the absorber. However, the latter decreases the irreversibility more than the former.

A Computational Model of a Combined Cycle Power Generation Unit

2004 ◽  
Vol 126 (3) ◽  
pp. 231-240 ◽  
Author(s):  
V. Ramaprabhu ◽  
R. P. Roy
Keyword(s):  
Power Generation ◽  
Computational Model ◽  
Model Simulation ◽  
Combined Cycle ◽  
Utility Company ◽  
Energy And Exergy ◽  
Power Generation Unit ◽  
Plant Test ◽  
Gas Turbine Cycle ◽  
Generation Unit

A computational model of a combined cycle power generation unit is developed and applied to one operated by a local utility company. The objective is to predict the performance of this unit by carrying out energy and exergy analyses of its components. The model is based on thermodynamic, heat transfer, and psychrometric principles, and includes an inlet air conditioning (fogging) system for the gas turbine cycle. To evaluate the model, simulation results are compared with available plant test data at rated load with and without the inlet fogging system in operation.

scholarly journals Thermodynamic evaluation of a combined-cycle power plant with MSF and MED desalination

2020 ◽  
Vol 10 (2) ◽  
pp. 146-157 ◽  
Author(s):  
M. H. Khoshgoftar Manesh ◽  
S. Kabiri ◽  
M. Yazdi ◽  
F. Petrakopoulou
Keyword(s):  
Power Plant ◽  
Combined Cycle ◽  
Integrated Systems ◽  
Thermodynamic Evaluation ◽  
Simultaneous Generation ◽  
Combined Cycle Power Plant ◽  
Multi Stage ◽  
Energy And Exergy ◽  
Near Future ◽  
Exergy Analyses

Abstract Rising water scarcity and abundant brine water resources, especially in desert locations, call for the wider adaptation of desalination techniques. Furthermore, the interdependency of water and energy has gained more attention in recent years and it is expected to play an important role in the near future. The present study deals with both topics in that it presents the coupling of a power plant with desalination units for the simultaneous generation of energy and water in Iran. The power plant used in the analysis is the Qom combined-cycle power plant. The plant is integrated, first, with a multi-stage flash (MSF) unit and, then, with a multi-effect desalination (MED) unit, and it is evaluated using energy and exergy analyses. We find that the generated power of the integrated systems is decreased by 9.7% and 8.5% with the MED and the MSF units, respectively. Lastly, the freshwater production in the plant using MED is significantly higher than in the plant with MSF (1,000 versus 1,521 kg/s).

Sign in / Sign up

Export Citation Format

Share Document