Mechanical Engineering Faculty Research
Title
Thermodynamic Modeling and Assessment of a Combined Coal Gasification and Alkaline Water Electrolysis System for Hydrogen Production
Document Type
Article
Publication Date
Winter 2-25-2014
Abstract
The performance of a clean energy system that combines the coal gasification and alkaline water electrolyzer concepts to produce hydrogen is evaluated through thermodynamic modeling and simulations. A parametric study is conducted to determine the effect of water ratio in coal slurry, gasifier temperature, effectiveness of carbon dioxide removal, and hydrogen recovery efficiency of the pressure swing adsorption unit on the system hydrogen production. The exergy efficiency and exergy destruction in each system component are also evaluated. The results reveal that the overall energy and exergy efficiencies of this system are ∼58% and ∼55%, respectively. The weight ratio of the hydrogen yielded to the coal fed to this system is ∼0.126. Although this system produces hydrogen from coal, the greenhouse gases emitted from this system are fairly low.
Publication Title
International Journal of Hydrogen Energy
Volume
39
Issue
7
First Page
3061
Last Page
3071
Recommended Citation
Herdem, Munur Sacit; Farhad, Siamak; Dincer, Ibrahim; and Hamdullahpur, Feridun, "Thermodynamic Modeling and Assessment of a Combined Coal Gasification and Alkaline Water Electrolysis System for Hydrogen Production" (2014). Mechanical Engineering Faculty Research. 95.
https://ideaexchange.uakron.edu/mechanical_ideas/95