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Energy and exergy analysis of hydrogen-oriented coal gasification with CO2 capture

Liszka, Marcin; Malik, Tomasz; Manfrida, Giampaolo - In: Energy 45 (2012) 1, pp. 142-150

Coal gasification is seen as an attractive way for hydrogen production. The main advantage of this approach is the low …, pressure-swing adsorption process for hydrogen separation, combined cycle for power production and essential auxiliary … loss takes place in the gasifier. The overall exergy efficiency of the coal-to-hydrogen system is equal to ca. 57%, while …

Persistent link: https://www.econbiz.de/10011052964

Techno-economic prospects of small-scale membrane reactors in a future hydrogen-fuelled transportation sector

Sjardin, M.; Damen, K.J.; Faaij, A.P.C. - In: Energy 31 (2006) 14, pp. 2523-2555

The membrane reactor is a novel technology for the production of hydrogen from natural gas. It promises economic small …-scale hydrogen production, e.g. at refuelling stations and has the potential of inexpensive CO2 separation. Four configurations of … to assess the trade-off between production scale and the construction of a hydrogen and a CO2 distribution infrastructure …

Persistent link: https://www.econbiz.de/10011053151

Exergetic evaluation of 5 biowastes-to-biofuels routes via gasification

Sues, Anna; Juraščík, Martin; Ptasinski, Krzysztof - In: Energy 35 (2010) 2, pp. 996-1007

gas), methanol, Fischer–Tropsch fuels, hydrogen, as well as heat and electricity, from several biowastes generated in the … synthesis is preferred when exergetic efficiency is the objective parameter, but hydrogen process is more efficient when the …

Persistent link: https://www.econbiz.de/10011054406

Exergy based performance analysis of hydrogen production from rice straw using oxygen blown gasification

Bhattacharya, Atmadeep; Das, Anirban; Datta, Amitava - In: Energy 69 (2014) C, pp. 525-533

An exergetic analysis has been performed on a gasification-based bio-hydrogen generation system consisting of an ASU … operating parameters on the hydrogen yield and cold gas efficiency. It is observed that, with 95% oxygen in the gasifying agent … and with gasifier equivalence ratio of 4.0, the process generates 107.8 g hydrogen per kg of dry biomass (on ash free …

Persistent link: https://www.econbiz.de/10011055731

Advances in hydrogen production by thermochemical water decomposition: A review

Rosen, Marc A. - In: Energy 35 (2010) 2, pp. 1068-1076

Hydrogen demand as an energy currency is anticipated to rise significantly in the future, with the emergence of a … hydrogen economy. Hydrogen production is a key component of a hydrogen economy. Several production processes are commercially … other hydrogen production processes. Recent advances in hydrogen production by thermochemical water decomposition are …

Persistent link: https://www.econbiz.de/10010807569

Energy and exergy analyses of a new four-step copper–chlorine cycle for geothermal-based hydrogen production

Tolga Balta, M.; Dincer, Ibrahim; Hepbasli, Arif - In: Energy 35 (2010) 8, pp. 3263-3272

In this paper, energy and exergy analyses of the geothermal-based hydrogen production via thermochemical water …

Persistent link: https://www.econbiz.de/10010807811

Assessment of maximum available work of a hydrogen fueled compression ignition engine using exergy analysis

Chintala, Venkateswarlu; Subramanian, K.A. - In: Energy 67 (2014) C, pp. 162-175

) of a dual-fuel diesel engine (H2 (hydrogen)–diesel) using exergy analysis. The maximum available work increased with H2 …

Persistent link: https://www.econbiz.de/10010808407

Influence of the rated power in the performance of different proton exchange membrane (PEM) fuel cells

San Martin, J.I.; Zamora, I.; San Martin, J.J.; … - In: Energy 35 (2010) 5, pp. 1898-1907

Fuel cells are clean generators that provide both electrical and thermal energy with a high global efficiency level. The characteristics of these devices depend on numerous parameters such as: temperature, fuel and oxidizer pressures, fuel and oxidizer flows, etc. Therefore, their influence...

Persistent link: https://www.econbiz.de/10010808744

An energy self-sufficient public building using integrated renewable sources and hydrogen storage

Marino, C.; Nucara, A.; Pietrafesa, M.; Pudano, A. - In: Energy 57 (2013) C, pp. 95-105

The control of the use of fossil fuels, major cause of greenhouse gas emissions and climate changes, in present days represents one of Governments' main challenges; particularly, a significant energy consumption is observed in buildings and might be significantly reduced through sustainable...

Persistent link: https://www.econbiz.de/10010808913

Production of lime, hydrogen, and methanol by the thermo-neutral combined calcination of limestone with partial oxidation of natural gas or coal

Halmann, M.; Steinfeld, A. - In: Energy 31 (2006) 10, pp. 1533-1541

syngas. A preliminary evaluation indicates favorable economics for the co-production of CaO and hydrogen or methanol from …

Persistent link: https://www.econbiz.de/10010808936