Fuel decarbonisation

Thermo-environomic optimisation of fuel decarbonisation alternative processes for hydrogen and power production.
To meet the CO2 reduction targets and to ensure a reliable energy supply, the development and wide scale deployment of cost-competitive innovative low-carbon energy technologies is essential. Switching to renewable resources and CO2 capture and storage in power plants, are regarded as promising alternatives. To design and evaluate the competitiveness of such complex integrated energy conversion systems, a systematic comparison including thermodynamic, economic and environmental considerations is required.
This research deals with the development of a systematic thermo-environomic optimisation strategy, combining energy integration techniques, life cycle assessment and multi-objective optimization, for the conceptual design omparison and optimisation of natural gas/coal and biomass fed processes generating H2 and electricity with CO2 capture. The energetic, economic and environmental cost of carbon capture are evaluated and compared for several process options in order to assess trade-offs to support decision-making.


The process performance is systematically compared and the trade-offs are assessed to support decision-making and identify optimal process configurations with regard to the polygeneration of H2, electricity, heat and captured CO2. It appears that the various process options are in competition, even with conventional plants without CO2 capture when a carbon tax is introduced. The choice of the optimal configuration is defined by the production scope and the priorities given to the different thermo-environomic criteria.



  • CO2 capture and storage
  • Thermo-environomic optimisation

Links: EPFL Thesis N°5655

CARMA project

Contacts: Dr. Laurence Tock

Publication List:

Environomic optimal design of power plants with CO2 capture

L. Tock; F. Maréchal 

International Journal of Greenhouse Gas Control. 2015. Vol. 39, p. 245-255. DOI : 10.1016/j.ijggc.2015.05.022.

Thermo-environomic optimisation strategy for fuel decarbonisation process design and analysis

L. Tock; F. Maréchal 

Computers & Chemical Engineering. 2015. Vol. 83, p. 110-120. DOI : 10.1016/j.compchemeng.2015.04.018.

Decision Support for CO2 Capture Process Options under Uncertain Market Conditions using Multi-objective Optimisation

L. Tock; F. Maréchal 

2014.  p. 1207-1212. DOI : 10.1016/B978-0-444-63455-9.50036-2.

Life Cycle Assessment Based Process Design of CO2 Capture Options

L. Tock; F. Maréchal 

2014.  p. 1033-1038. DOI : 10.1016/B978-0-444-63455-9.50007-6.

CO2 mitigation in thermo-chemical hydrogen processes: Thermo-environomic comparison and optimization

L. Tock; F. Maréchal 

Energy Procedia. 2012. Vol. 29, p. 624-632. DOI : 10.1016/j.egypro.2012.09.072.

CO2 Mitigation in Thermo-Chemical Hydrogen Processes: Thermo-Environomic Comparison and Optimization

L. Tock; F. Maréchal 

2012.  p. 624-632. DOI : 10.1016/j.egypro.2012.09.072.

Process design optimization strategy to develop energy and cost correlations of CO2 capture processes

L. Tock; F. Maréchal 

2012.  p. 562-566. DOI : 10.1016/B978-0-444-59519-5.50113-1.

Co-production of Hydrogen and Electricity from Lignocellulosic Biomass: Process Design and Thermo-economic Optimization

L. Tock; F. Maréchal 

2011. 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems , Novi Sad, Serbia, July 4-7, 2011. p. 339-349. DOI : 10.1016/j.energy.2012.01.056.