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Assessment of olive wastes as energy source: pyrolysis, torrefaction and the key role of H loss in thermal breakdown

Volpe, Roberto; Messineo, Antonio; Millan, Marcos; … - In: Energy 82 (2015) C, pp. 119-127

The present work describes the first stage of a multi-stage process seeking to develop a usable and cheap design for a downdraft gasifier fed with lingo-cellulosic olive waste. The thermochemical behaviour of two types of olive waste has been assessed during pyrolysis and torrefaction...

Persistent link: https://www.econbiz.de/10011209528

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

Availability analysis of hydrogen/natural gas blends combustion in internal combustion engines

Rakopoulos, C.D.; Scott, M.A.; Kyritsis, D.C.; … - In: Energy 33 (2008) 2, pp. 248-255

Possibly one of the most significant advantages that hydrogen may have as a fuel is its potential for increased second … hydrocarbon-based fuels. A computational investigation of this effect is pursued for the case of mixtures of hydrogen and natural … function of hydrogen content of the fuel and the operating parameters of the engine. Of particular importance is the …

Persistent link: https://www.econbiz.de/10010810171

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

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

Influence of FeCl3 and lime added to sludge on sludge–coal pyrolysis

Folgueras, M.B.; Díaz, R.M. - In: Energy 35 (2010) 12, pp. 5250-5259

Copyrolysis of sewage sludge–coal blends at different ratios (0:100, 10:90, 50:50 and 100:0) was investigated using a simultaneous thermogravimetry–mass spectrometry analyser. During copyrolysis three thermal decomposition stages were identified between 180 and 800°C. From 180°C to 385°C,...

Persistent link: https://www.econbiz.de/10011054643

Autothermal two-stage gasification of low-density waste-derived fuels

Hamel, Stefan; Hasselbach, Holger; Weil, Steffen; … - In: Energy 32 (2007) 2, pp. 95-107

parallel-arranged bubbling fluidized bed and a fixed bed reactor, has been developed to convert Stabilat® into hydrogen …

Persistent link: https://www.econbiz.de/10011054806

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