Thermodynamic and Exergetic Analysis of the Allam Cycle


Allam cycle
Carbon dioxide

How to Cite

Mariani E, Talluri L, Manfrida G. Thermodynamic and Exergetic Analysis of the Allam Cycle. Glob. J. Energ. Technol. Res. Updat. [Internet]. 2021 Dec. 28 [cited 2022 May 18];8:19-34. Available from:


This paper presents the study on the current developments of oxy-combustion thermodynamic cycles, which use the CO2 produced by combustion within the cycle itself without releases into the atmosphere. This is the cause of the attention paid to this type of technology and which makes these cycles one of the avant-gardes of power plants. In particular, this study focuses on the analysis of the Allam cycle with the aim of evaluating its performance and therefore investigating whether it may be an alternative to the series of CO2 control technologies. In this paper, a first principle efficiency of 54.6% and a second principle efficiency of 55.7% are estimated, confirming the outstanding prospect of the NET Power cycle.


Fernandes D, Wang S, Xu Q, Buss R, Chen D. Process and carbon footprint analyses of the Allam cycle power plant integrated with an air separation unit. Clean Technologies, 2019.

Guohui, Jun S, Hao X, Laihong Z, Shen. A unified correlation for estimating specific chemical exergy of solid and liquid fuels; Energy 2012; 40: 164-173.

Lombardi L. Life cycle assessment comparison of technical solutions for CO2 emissions reduction in power generation; Energy Conversion and Management 2003; 44: 93-108.

Mancuso L, Ferrari N, Chiesa P, Martelli E, Romano MC. Oxy-combustion turbine power plants. IEAGHG report 2015/05, August, 2015.

Diego ME, Finney KN, Pourkashanian M. The Sustainable Option of Power from Fossil Fuels with Carbon Capture and Storage: An Overview of State-of-the-Art Technology; Sustainable Energy Technology and Policies pp 195-229.

Mathieu P, Dubuisson R, Houyou S, Nihart R. New concept of co2 removal technologies in power generation, combined with fossil fuel recovery and long term co2 sequestration; Proceedings of the ASME TURBO EXPO 2000 May 8-11, 2000 - Munich, Germany.

Scaccabarozzi R, Gatti M, Martelli E. Thermodynamic analysis and numerical optimization of the NET Power oxy-combustion cycle; Applied Energy 2016; 178: 505-526.

Allam R, Martin S, Forrest B, Fetvedt J, Lu X, Freed D, et al. Demonstration of the Allam Cycle: An update on the development status of a high efficiency supercritical carbon dioxide power process employing full carbon capture; 13th International Conference on Greenhouse Gas Control Technologies, GHGT-13, 14-18 November 2016, Lausanne, Switzerland; Energy Procedia 2017; 114: 5948-5966.

Rogalev V, Kindra S, Osipov N. Rogale 2, thermodynamic analysis of the net power oxy-combustion cycle, Proceedings of 13-th European Conference on Turbomachinery Fluid dynamics & Thermodynamics ETC13, April 8-12, 2018; Lausanne, Switzerland.

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Copyright (c) 2021 Elisa Mariani, Lorenzo Talluri, Giampaolo Manfrida