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Keywords: exergy
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Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2022, 144(5): 051002.
Paper No: GTP-21-1202
Published Online: February 21, 2022
... the fuel’s exergy [ 11 ]. Diesel engines require greater quantities of air than SI engines because of the lean combustion and the fuel chemical composition. Furthermore, diesel oil has an energy density of 3.58 MJ/m 3 airst , which is similar to one of the methane, but greater than one of the biogases (3.44...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2022, 144(1): 011008.
Paper No: GTP-21-1370
Published Online: October 13, 2021
... value metric (which may be different for fired and unfired operation or other load points). This is achieved by expressing the HRSG performance guarantee in terms of exergy recovered to steam and plant exergy loss attributable to the HRSG (gas side draft loss). This will be shown, with examples...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2021, 143(10): 101011.
Paper No: GTP-21-1068
Published Online: September 3, 2021
...Changcheng Liu; Zhongchang Liu; Jing Tian; Zeyu Yang; Penghui Wang In this study, the impacts of transient time, intake air temperature, coolant temperature, and piecewise transient strategies on energy and exergy terms during typical transient process of automotive diesel engine were researched...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2018, 140(9): 091202.
Paper No: GTP-17-1383
Published Online: June 15, 2018
...Rebecca Zarin Pass; Sankaran Ramakrishnan; Chris Edwards We systematically determine the maximally efficient manner of using water and air in a single-cycle steady-flow combustion gas turbine power plant. In doing so, we identify the upper limit to exergy efficiency for dry and wet gas turbine...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 081201.
Paper No: GTP-17-1366
Published Online: May 18, 2018
...Oskar Thulin; Olivier Petit; Carlos Xisto; Xin Zhao; Tomas Grönstedt An exergy framework was developed taking into consideration a detailed analysis of the heat exchanger (HEX) (intercooler (IC)) component irreversibilities. Moreover, it was further extended to include an adequate formulation...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2017, 139(1): 011401.
Paper No: GTP-16-1221
Published Online: August 16, 2016
... of a series of modeling methods applicable to AD and biogas fuel yield, thermodynamic evaluation of cogenerated gas turbine cycles, exergy analysis, and economic evaluation of powerplant operation. The developed method is applied for the techno-economic analysis of an AD plant yielding biogas fuel supplied...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2016, 138(9): 091502.
Paper No: GTP-16-1008
Published Online: March 30, 2016
... model using a first law of thermodynamics analysis is utilized as a foundation for a second-law analysis, allowing for a simultaneous energy and exergy analysis of engine combustion from a captured pressure trace. The model calibrates the rate and magnitude of combustion through an Arrhenius equation...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2016, 138(8): 081602.
Paper No: GTP-15-1585
Published Online: March 15, 2016
..., with the maximum exergy efficiency and the lowest cost per power (k$/kW) as its objectives. Artificial neural network (ANN) is chosen to accelerate the parameters query process. It is shown that the cycle parameters such as heat source temperature, turbine inlet temperature, cycle pressure ratio, and pinch...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2016, 138(2): 021202.
Paper No: GTP-15-1276
Published Online: September 16, 2015
... performance data on optimized intercooled (IC) turbofan engines are provided. Analysis is conducted using an exergy breakdown, i.e., quantifying the losses into a common currency by applying a combined use of the first and second law of thermodynamics. Optimal IC geared turbofan engines for a long range...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2015, 137(4): 041204.
Paper No: GTP-14-1396
Published Online: October 28, 2014
... these boundaries, in order to achieve higher performance. A similar analysis revealed operational regimes with respect to the gas turbine exergy losses (see Fig. 6 ). After plotting the cases corresponding to cluster 1 separately, as in case of the low pressure steam turbine, the only operational condition...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2015, 137(3): 032601.
Paper No: GTP-14-1362
Published Online: September 30, 2014
... to the compressor technology in order to achieve an optimal performance level for each variant. The thermodynamic results have been cross-checked with a breakdown of the exergy losses in the three variants. The final results for base load operation indicate that the intercooled variant could become the best choice...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2014, 136(3): 031702.
Paper No: GTP-13-1122
Published Online: November 22, 2013
... a thermodynamic assessment, using an exergy analysis of a syngas redox (SGR) process for generating electricity. The power island of the proposed process uses syngas produced by coal gasification and is then cleaned through a high-temperature gas desulfurization (HGD) process. Hematite (Fe 2 O 3 ) is used...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2014, 136(2): 021501.
Paper No: GTP-12-1482
Published Online: October 25, 2013
..., 2013. Assoc. Editor: Kalyan Annamalai. 11 12 2012 21 08 2013 This section presents the models used to simulate the devices and to calculate the fluid properties. Sections 3.1, 3.2, and 3.3 describe the mass, energy and exergy balances applied to the different components...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2012, 134(3): 031801.
Published Online: December 30, 2011
...Fontina Petrakopoulou; George Tsatsaronis; Tatiana Morosuk; Anna Carassai Exergy-based analyses are important tools for studying and evaluating energy conversion systems. Conventional exergy-based analyses provide us with important information on the design and operation of a system. However...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. November 2011, 133(11): 113001.
Published Online: May 13, 2011
... to be competitive with those of chemical absorption. 04 05 2010 12 01 2011 13 05 2011 13 05 2011 air pollution control climate mitigation combined cycle power stations combustion exergy CO 2 capture combined cycle advanced zero emission plant exergetic analysis...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. June 2011, 133(6): 063001.
Published Online: February 14, 2011
... conditions using high ash (HA) indigenous coal. A unit size of 800 MWe presently under development in India is considered for energy and exergy analysis of power plants. Commercially established steam turbine parameters are used for the optimization of SupC power plant, whereas advanced steam turbine...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2010, 132(1): 011801.
Published Online: September 30, 2009
... and as a whole. This paper describes a simple but accurate method to estimate the Rankine bottoming cycle power output directly from the gas turbine exhaust exergy, utilizing the second law of thermodynamics. The classical first law approach, i.e., the heat and mass balance method, requires lengthy calculations...
Journal Articles
Article Type: Technical Briefs
J. Eng. Gas Turbines Power. March 2008, 130(2): 024501.
Published Online: February 29, 2008
... energy ratio, second law efficiency, and exergy destruction in each component are examined. Results for gas turbine cycle, cogeneration cycle, and trigeneration cycle are compared. Thermodynamic analysis indicates that maximum exergy is destroyed during the combustion and steam generation process, which...