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Thermodynamic analysis of ethanol reforming for hydrogen production

Sun, Shaohui; Yan, Wei; Sun, Peiqin; Chen, Junwu - In: Energy 44 (2012) 1, pp. 911-924

This work presents the simulated equilibrium compositions of ethanol steam reforming (SR), partial oxidation (POX) and auto-thermal reforming (ATR) at a large temperature range, steam-to-ethanol and oxygen-to-ethanol molar ratios. The simulation work shows that the moles of hydrogen yield per...

Persistent link: https://www.econbiz.de/10011054712

Hydrogen from aqueous fraction of biomass pyrolysis liquids by catalytic steam reforming in fluidized bed

Medrano, J.A.; Oliva, M.; Ruiz, J.; García, L.; Arauzo, J. - In: Energy 36 (2011) 4, pp. 2215-2224

fraction of pyrolysis liquids and the resulting coke deposits. The catalyst composition influenced the quantity and type of … although the addition of small quantities of oxygen decreased the coke content of the catalyst by more than 50% weight. Greater … efficiency and further catalyst development are needed to improve the energetic requirements of the process. …

Persistent link: https://www.econbiz.de/10011055858

Numerical study of effect of operating and design parameters for design of steam reforming reactor

Hong, Sung Kook; Dong, Sang Keun; Han, Jeong Ok; Lee, … - In: Energy 61 (2013) C, pp. 410-418

, catalyst layer length, and number of tubes. The calculation of the reforming reaction rate is coupled with a three … catalyst layer length induces a decrease in H2 (hydrogen) concentration as well as pressure loss. An increased number of tubes … system efficiency and reduce the pressure loss, an increase in heat transfer area and decrease in catalyst layer length …

Persistent link: https://www.econbiz.de/10010809511

Greenhouse effect reduction and energy recovery from waste landfill

Lombardi, Lidia; Carnevale, Ennio; Corti, Andrea - In: Energy 31 (2006) 15, pp. 3208-3219

Waste management systems are a non-negligible source of greenhouse gases. In particular, methane and carbon dioxide emissions occur in landfills due to the breakdown of biodegradable carbon compounds operated on by anaerobic bacteria. The conventional possibilities of reducing the greenhouse...

Persistent link: https://www.econbiz.de/10010809976

Thermodynamic and kinetic model of reforming coke-oven gas with steam

Zhang, Jiayuan; Zhang, Xiaohui; Chen, Zhuo; Li, Li - In: Energy 35 (2010) 7, pp. 3103-3108

The experiments of reforming the methane of coke-oven gas with steam were performed. The effects of the thermodynamic factors, such as the H2O/CH4 ratio, the conversion temperature (T) of methane and the reaction time (t), on the methane conversion rate have been investigated. The experimental...

Persistent link: https://www.econbiz.de/10010810522

Steam reforming of methane using double-walled reformer tubes containing high-temperature thermal storage Na2CO3/MgO composites for solar fuel production

Gokon, Nobuyuki; Nakamura, Shohei; Hatamachi, Tsuyoshi; … - In: Energy 68 (2014) C, pp. 773-782

solar steam reforming. The variations in the temperatures of the catalyst and storage material, methane conversion, duration …

Persistent link: https://www.econbiz.de/10011052954

Calculation of the energy efficiency of fuel processor – PEM (proton exchange membrane) fuel cell systems from fuel elementar composition and heating value

Salemme, Lucia; Menna, Laura; Simeone, Marino - In: Energy 57 (2013) C, pp. 368-374

This simulative work analyzes the impact of fuel type on the energy efficiency of systems composed by a fuel processor for hydrogen production and a PEM (proton exchange membrane) fuel cell. Two fuel processors are simulated, one employs steam reforming to produce hydrogen, the other one...

Persistent link: https://www.econbiz.de/10011053889

Performance advancement of solar air-conditioning through integrated system design for building

Fong, K.F.; Lee, C.K. - In: Energy 73 (2014) C, pp. 987-996

This study is to advance the energy performance of solar air-conditioning system through appropriate component integration from the absorption refrigeration cycle and proper high-temperature cooling. In the previous studies, the solar absorption air-conditioning using the working pair of water...

Persistent link: https://www.econbiz.de/10010906841

Thermodynamic analysis on specific thrust of the hydrocarbon fueled scramjet

Yang, Qingchun; Chang, Juntao; Bao, Wen - In: Energy 76 (2014) C, pp. 552-558

The aim of this work is to provide an upper estimate of the theoretical maximum specific thrust of the hydrocarbon fueled scramjet. An idealized thermodynamic cycle analysis is carried out to evaluate the performance of scramjet engines at different flight conditions, inlet pressure ratio and...

Persistent link: https://www.econbiz.de/10010939832

Thermodynamic analysis and performance optimization of an Organic Rankine Cycle (ORC) waste heat recovery system for marine diesel engines

Song, Jian; Song, Yin; Gu, Chun-wei - In: Energy 82 (2015) C, pp. 976-985

Escalating fuel prices and imposition of carbon dioxide emission limits are creating renewed interest in methods to increase the thermal efficiency of marine diesel engines. One viable means to achieve such improved thermal efficiency is the conversion of engine waste heat to a more useful form...

Persistent link: https://www.econbiz.de/10011209553