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Energy and exergy analysis of syngas production from different biomasses through air-steam gasification

S. Rupesh,C. Muraleedharan,P. Arun

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 607-619 doi: 10.1007/s11708-016-0439-1

Abstract: This paper analyses the performance of different biomasses during gasification through energy and exergyanalysis.Of the biomasses considered, sawdust has the highest energy and exergy efficiencies and lowest irreversibility1000 K, the steam to biomass ratio of unity and the equivalence ratio of 0.25, the energy efficiency, exergythat the biomass with lower ash content and higher carbon content contributes to maximum energy and exergy

Keywords： gasification     modeling     energy     exergy     syngas    

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Exergy analysis and performance enhancement of isopropanol-acetone-hydrogen chemical heat pump

Min XU, Jun CAI, Xiulan HUAI

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 510-515 doi: 10.1007/s11708-017-0508-0

Abstract: Exergy loss analysis was conducted to identify the irreversibility in each component of the isopropanol-acetone-hydrogenThe enthalpy and exergy efficiency of the IAH-CHP with reactive distillation increases by 24.1% and 23.2%

Keywords： waste heat reuse     chemical heat pump     exergy analysis     isopropanol    

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Exergy analysis of multi-stage crude distillation units

Xingang LI, Canwei LIN, Lei WANG, Hong LI

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 437-446 doi: 10.1007/s11705-013-1349-y

Abstract: We also analyzed the energy and exergy to assess the energy consumed by each process.Exergy loss is considered as a key parameter to assess these processes.When the exergy losses in heat exchangers are disregarded, the three- and four-stage CDUs have lowerexergy losses than the five- and six-stage CDUs.When the overall exergy losses are considered, the optimum number of stages of CDUs depends on the exergy

Keywords： exergy     exergy loss     crude oil distillation     multi-stage     energy saving    

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Performance analysis of combined cycle power plant

Nikhil DEV,Rajesh ATTRI

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 371-386 doi: 10.1007/s11708-015-0371-9

Abstract: Exergetic and energetic analysis of each component of the seven configurations is conducted with theThe thermodynamics analysis indicates that the exergy destruction in various components of the combined

Keywords： first-law     second-law     exergy destruction     components    

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Exergy-energy analysis of full repowering of a steam power plant

S. NIKBAKHT NASERABAD,K. MOBINI,A. MEHRPANAHI,M. R. ALIGOODARZ

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 54-67 doi: 10.1007/s11708-014-0342-6

Abstract: The results obtained from modeling and analyzing the energy-exergy of the original steam power plant

Keywords： full repowering     exergy analysis     V94.2 and V94.3A gas turbines     double-pressure HRSG     duct burner     Bandarabbas    

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Exergy and exergoeconomic analyses for integration of aromatics separation with aromatics upgrading

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 183-193 doi: 10.1007/s11705-022-2192-9

Abstract: Exergy and exergoeconomic analyses are conducted to give insights in the splitting ratios of benzene,indicate that there are different preferences for the splitting ratios of benzene and toluene in terms of exergyThe process generates lower total exergy destruction when the splitting ratio of toluene varies betweenBesides, it is found that distillation is the biggest contributor to the total exergy destruction, accounting

Keywords： aromatics separation and upgrading     variant splitting ratios     total exergy destruction     total product    

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Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

Bin HU, Di WU, L.W. WANG, R.Z. WANG

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 493-502 doi: 10.1007/s11708-017-0510-6

Abstract: In this paper, the simulation approach and exergy analysis of multi-stage compression high temperatureThe exergy destruction ratios of each component for different stage compression systems are compared.The results show that the exergy loss ratios of the compressor are bigger than that of the evaporatorThe multi-stage compression system has better energy and exergy efficiencies with the increase of compressionWhen the waste heat source temperature is 60°C, the exergy efficiencies increase about 6.9% and 11.8%

Keywords： multi-stage compression     high temperature heat pump     heat recovery     exergy destruction     R1234ze(Z) working    

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Exergy analysis and simulation of a 30MW cogeneration cycle

Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 169-180 doi: 10.1007/s11465-013-0263-9

Abstract: For different operative conditions, energy and exergy efficiencies follow similar trends; although, exergy

Keywords： Cogeneration cycle     air compressor     HRSG     gas turbine     regenerator     CR     IAT    

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A review on membrane distillation in process engineering: design and exergy equations, materials and

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 592-613 doi: 10.1007/s11705-021-2105-3

Abstract: One of the problems that most afflicts humanity is the lack of clean water. Water stress, which is the pressure on the quantity and quality of water resources, exists in many places throughout the World. Desalination represents a valid solution to the scarcity of fresh water and several technologies are already well applied and successful (such as reverse osmosis), producing about 100 million m3·d−1 of fresh water. Further advances in the field of desalination can be provided by innovative processes such as membrane distillation. The latter is of particular interest for the treatment of waste currents from conventional desalination processes (for example the retentate of reverse osmosis) as it allows to desalt highly concentrated currents as it is not limited by concentration polarization phenomena. New perspectives have enhanced research activities and allowed a deeper understanding of mass and heat transport phenomena, membrane wetting, polarization phenomena and have encouraged the use of materials particularly suitable for membrane distillation applications. This work summarizes recent developments in the field of membrane distillation, studies for module length optimization, commercial membrane modules developed, recent patents and advancement of membrane material.

Keywords： membrane distillation     recent developments     heat and mass transfer     wetting     membrane material    

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Exergy losses in premixed flames of dimethyl ether and hydrogen blends

Tongbin ZHAO, Jiabo ZHANG, Dehao JU, Zhen HUANG, Dong HAN

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 658-666 doi: 10.1007/s11708-019-0645-8

Abstract: A second-law thermodynamic analysis was conducted for stoichiometric premixed dimethyl ether (DME)/hydrogenThe exergy losses from the irreversibility sources, i.e., chemical reaction, heat conduction and speciesIt is observed that, regardless of the fuel blends, chemical reaction contributes most to the exergyThe results also indicate that increased H substitution decreases the exergy losses from reactions,The decreases in exergy losses by chemical reactions and heat conduction are higher, but the exergy loss

Keywords： second law analysis     flame     dimethyl ether (DME)     hydrogen     binary fuels    

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Entropy flow, entropy generation, exergy flux, and optimal absorbing temperature in radiative transfer

Zeshao CHEN, Songping MO, Peng HU, Shouli JIANG, Gang WANG, Xiaofang CHENG,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 301-305 doi: 10.1007/s11708-010-0006-0

Abstract: The formulas of entropy flow, entropy generation, exergy flux, and optimal temperature of absorbing surfacefor maximum exergy output are derived.The result is a contribution to the thermodynamic analysis and optimization of solar energy utilization

Keywords： radiative heat transfer     entropy generation     exergy     thermodynamics    

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Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 521-535 doi: 10.1007/s11708-021-0720-9

Abstract: The energy and exergy analyses of the absorption refrigeration system (ARS) using H O-[mmim][DMP] mixture

Keywords： ionic liquid driven absorption cycle     H2O-[mmim][DMP]     coefficient of performance (COP)     exergyanalysis     thermodynamics mixture property    

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Search for a natural scientific measure of economy

John E COULTER

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 111-118 doi: 10.1007/s11783-011-0285-7

Abstract: Various schemes using analysis of utility functions, oil equivalents, entropy, energy, and other unitsNow, the concept of exergy, pioneered in Eastern Europe in the 1950s, is being researched, developed,

Keywords： climate change     financial crisis     energy     exergy     environment    

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End-use energy utilization efficiency of Nigerian residential sector

Fidelis I. ABAM,Olayinka S. OHUNAKIN,Bethrand N. NWANKWOJIKE,Ekwe B. EKWE

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 322-334 doi: 10.1007/s11708-014-0329-3

Abstract: overall energy efficiency in the Nigerian residential sector (NRS) were estimated using energy and exergyanalysis.The energy and exergy flows were considered from 2006 to 2011.The contribution of the energy carriers to the total energy and exergy inputs were 1.45% and 1.43% foranalysis in enhancing sustainable energy policies and management and improved integration techniques

Keywords： end-use     energy     exergy efficiency     residential sector     Nigeria    

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Exergetic sustainability evaluation and optimization of an irreversible Brayton cycle performance

Mohammad H. AHMADI,Mohammad-Ali AHMADI,Esmaeil ABOUKAZEMPOUR,Lavinia GROSU,Fathollah POURFAYAZ,Mokhtar BIDI

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 399-410 doi: 10.1007/s11708-017-0445-y

Abstract: The power output, the concepts of entropy generation, the energy, the exergy output, and the exergy efficienciesfor the irreversible Brayton cycle are considered in the analysis.In the first scheme, in order to maximize the exergy output, the ecological function and the ecologicalIn the third scenario, in order to maximize the exergy output, the exergetic performance criteria andfunctions containing the exergetic performance criteria, the ecological coefficient of performance, and the exergy-based

Keywords： entropy generation     exergy     Brayton cycle     ecological function     irreversibility    

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Title Author Date Type Operation

Energy and exergy analysis of syngas production from different biomasses through air-steam gasification

S. Rupesh,C. Muraleedharan,P. Arun

Journal Article

Exergy analysis and performance enhancement of isopropanol-acetone-hydrogen chemical heat pump

Min XU, Jun CAI, Xiulan HUAI

Journal Article

Exergy analysis of multi-stage crude distillation units

Xingang LI, Canwei LIN, Lei WANG, Hong LI

Journal Article

Performance analysis of combined cycle power plant

Nikhil DEV,Rajesh ATTRI

Journal Article

Exergy-energy analysis of full repowering of a steam power plant

S. NIKBAKHT NASERABAD,K. MOBINI,A. MEHRPANAHI,M. R. ALIGOODARZ

Journal Article

Exergy and exergoeconomic analyses for integration of aromatics separation with aromatics upgrading

Journal Article

Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

Bin HU, Di WU, L.W. WANG, R.Z. WANG

Journal Article

Exergy analysis and simulation of a 30MW cogeneration cycle

Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri

Journal Article

A review on membrane distillation in process engineering: design and exergy equations, materials and

Journal Article

Exergy losses in premixed flames of dimethyl ether and hydrogen blends

Tongbin ZHAO, Jiabo ZHANG, Dehao JU, Zhen HUANG, Dong HAN

Journal Article

Entropy flow, entropy generation, exergy flux, and optimal absorbing temperature in radiative transfer

Zeshao CHEN, Songping MO, Peng HU, Shouli JIANG, Gang WANG, Xiaofang CHENG,

Journal Article

Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Journal Article

Search for a natural scientific measure of economy

John E COULTER

Journal Article

End-use energy utilization efficiency of Nigerian residential sector

Fidelis I. ABAM,Olayinka S. OHUNAKIN,Bethrand N. NWANKWOJIKE,Ekwe B. EKWE

Journal Article

Exergetic sustainability evaluation and optimization of an irreversible Brayton cycle performance

Mohammad H. AHMADI,Mohammad-Ali AHMADI,Esmaeil ABOUKAZEMPOUR,Lavinia GROSU,Fathollah POURFAYAZ,Mokhtar BIDI

Journal Article