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Ligang Wang

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Publications associées (34)

Power-to-methane via co-electrolysis of H2O and CO2: The effects of pressurized operation and internal methanation

Stefan Diethelm, Jan Van Herle, François Maréchal, Tzu-En Lin, Ligang Wang, Hanfei Zhang

This paper presents a model-based investigation to handle the fundamental issues for the design of co-electrolysis based power-to-methane at the levels of both the stack and system: the role of CO2 in co-electrolysis, the benefits of employing pressurized ...

2019

Power-to-fuels via solid-oxide electrolyzer: Operating window and techno-economics

Stefan Diethelm, Jan Van Herle, François Maréchal, Tzu-En Lin, Ligang Wang

Power-to-fuel systems via solid-oxide electrolysis are promising for storing excess renewable electricity by efficient electrolysis of steam (or co-electrolysis of steam and CO2) into hydrogen (or syngas), which can be further converted into synthetic fuel ...

2019

A Review of Evaluation, Optimization and Synthesis of Energy Systems: Methodology and Application to Thermal Power Plants

François Maréchal, Alberto Mian, Tzu-En Lin, Ligang Wang, Shivom Sharma

To reach optimal/better conceptual designs of energy systems, key design variables should be optimized/adapted with system layouts, which may contribute significantly to system improvement. Layout improvement can be proposed by combining system analysis wi ...

2018

In situ Control of the Adsorption Species in CO2 Hydrogenation: Determination of Intermediates and Byproducts

Andreas Züttel, Kun Zhao, Ligang Wang, Marco Calizzi, Emanuele Moioli

CO2 hydrogenation over catalysts is a potentially exciting method to produce fuels while closing the CO2 cycle and mitigating global warming. The mechanism of this process has been controversial due to the difficulty in clearly identifying the species pres ...

2018

Comparative Evaluation of Integrated Waste Heat Utilization Systems for Coal-Fired Power Plants Based on In-Depth Boiler-Turbine Integration and Organic Rankine Cycle

Ligang Wang

2018

The Application of Cyber Physical System for Thermal Power Plants: Data-Driven Modeling

Ligang Wang, Xiang Li

2018

A data-driven model for the air-cooling condenser of large-scale coal-fired power plants based on data reconciliation and support vector regression

François Maréchal, Jean-Loup Sylvain Robineau, Ligang Wang, Ivan Daniel Kantor, Xiang Li

The performance of a direct air-cooling condenser under operation is rather complicated, as it is interactively affected by the operating conditions (e.g., the mode of air fans) and ambient conditions (e.g., temperature and wind speed). To understand the c ...

2018

Integration of solid oxide fuel cells in cruise ship energy systems

François Maréchal, Ligang Wang, Francesco Baldi

The growing trend of the cruise ship industry, together with increasing concerns over its impact on the environment, makes these ships a much relevant target for the efforts toward increasing ship energy efficiency, thus ultimately reducing fuel consumptio ...

2018

Optimal design of solid-oxide electrolyzer based power-to-methane systems: A comprehensive comparison between steam electrolysis and co-electrolysis

Stefan Diethelm, Jan Van Herle, François Maréchal, Maria del Mar Perez Fortes, Hossein Madi, Ligang Wang

Power-to-methane technologies have been regarded as a promising alternative to offer small or large-scale, long-timescale (daily/weekly/seasonal) energy storage as well as the opportunity of utilizing CO2. The performance of the core component, the electro ...

2018

Identification of optimal operating strategy of direct air-cooling condenser for Rankine cycle based power plants

François Maréchal, Ligang Wang, Xiang Li

Direct air-cooling condenser has attracted significant attention in the last decade due to the employment of Rankine-cycle based power plants from renewable (e.g., concentrated solar) or traditional (e.g., coal) heat sources in water-scarce areas. The opti ...

2018

Integrated System Design of a Small-scale Power-to-Methane Demonstrator

Stefan Diethelm, Jan Van Herle, François Maréchal, Alberto Mian, Ligang Wang

Power-to-methane technology has been considered as a promising alternative to cope with seasonal storage of renewable energy and the utilization of CO2 captured from various sources, due to the existing infrastructure for massive methane storage and distri ...

2017

Malfunction diagnosis of thermal power plants based on advanced exergy analysis: The case with multiple malfunctions occurring simultaneously

Ligang Wang

During continuous operation of energy systems, the performance of components will mostly, gradually deviate away from the reference conditions due to performance degradation, which may eventually lead to malfunctions or operation failure. The complex inter ...

Elsevier2017

Multi-objective optimization and exergoeconomic analysis of a combined cooling, heating and power based compressed air energy storage system

François Maréchal, Ligang Wang, Erren Yao

Compressed air energy storage technologies can improve the supply capacity and stability of the electric- ity grid, particularly when fluctuating renewable energies are massively connected. While incorporating the combined cooling, heating and power system ...

Elsevier2017

Thermo-economic optimization of a combined cooling, heating and power system based on small-scale compressed air energy storage

François Maréchal, Ligang Wang, Erren Yao

Energy storage systems are important for dealing with the fluctuation of renewable energies in course of their increasing penetration into the energy market. Small-scale compressed air energy storage (CAES) with artificial air vessels can improve the suppl ...

Elsevier2016

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