Integrated methanol fuel processor

Schuessler et al. [85] of XCELLSiS (later BALLARD) presented an integrated methanol fuel processor system based on autothermal reforming, which coupled fuel/water evaporation with exothermic preferential oxidation (PrOx) of carbon monoxide. The reactor technology was based, in contrast to most other approaches, on a sintering technique. 

Integrated Methanol Fuel Processor for 100 W Power Output... 

For different applications, the power needed from the fuel cells varies from less than 1W for small applications such as sensors and mobile phones to over 100 kW for automobiles and stationary applications. With microreactors, hydrogen flows capable of producing power in the range from 0.01 W to 50 kW have been achieved [3]. Numerous applications of fuel conversion in microstructured devices have dealt with the combination with fuel cells to yield a power supply for microelectric devices and microsensors and as an alternative to a conventional battery. Thus, the resulting power output of the fuel cell has been in the low watts area, from 0.01 Wto a few watts, as in the integrated methanol fuel processors built by companies such as Casio and Motorola [4]. PNNL has developed various low-power portable fuel processor systems, from lower than 1W [5-7] to systems that could provide 15 W, such as a portable and lightweight system for a soldier portable fuel cell [8,9]. In the range of... 

Figure 24.7 Integrated methanol fuel processor with lOOW power equivalent [63],...

Yoshida et al. [173] designed an integrated methanol fuel processor from silicon and Pyrex glass substrates for a power equivalent of 10 W. It contained functional layers for steam reforming, evaporation, and combustion. Commercial Cu/ ZnO catalyst served for reforming and the Pt/TiOa combustion catalyst was prepared by a sol-gel method. A power density of 2.1 W/cm was determined for the device. 

Figure 14.31 Integrated methanol fuel processor with 100 W power equivalent [16, 86].

Figure 7.13 (a) Integrated methanol fuel processor with... 

Integrated Autothermal Methanol Fuel Processor (Ballard)... 

The aim of the work was to develop a methanol fuel processor for a 50 kW automobile engine. An integrated heat exchanger/reactor was fabricated and results were presented by Hermann et al. [120] of GM/OPEL. The specifications for the system were ambitious, amongst others ... 

An integrated heat exchanger-reactor for methanol steam reforming was developed by Hermann et al. [65] at GM/OPEL for a 50 kW methanol fuel processor. The system specifications included a volumetric power density of more than 5 kW dm, a gravimetric power density of more than 2.5 kWkg and a transient response to load changes from 10 to 90% in milliseconds. 

K Shah, R. S. Besser, Key issues in the microchemical systems-based methanol fuel processor energy density, thermal integration and heat loss mechanisms,... 

Casio Computer has developed a 2.4 We integrated micro fuel processor comprising a methanol steam reformer, a PrOx reactor and a catalytic combustor (Figures 27.10... 

Kim, C.-H., Seo, D.-J., and Eguchi, K. (2005) Hydrogen production with integrated microchannel fuel processor using methanol for portable fuel cell systems. Catal. Today, 110, 108-113. 

Within the scope of development work leading to a methanol fuel processor, a catalytic burner for anode off-gas combustion was built by Hohlein et cd. [556]. This burner was designed as a separate device and not integrated into the reformer. The platinum/alumina catalyst [557] for the combustion reaction was deposited on wire mesh. The coating thickness on the wire mesh was calculated to be 260 pm [18]. The burner, which is shown in Figure 7.43, was cooled by water. 

Direct Use of Methanol Reformate and Integration with Fuel Processor... 

Integrated Systems Fuelled by Methanol 4 [ISMol 4] Integrated Methanol Steam Reforming Fuel Processor for 20 kW Power Output... 

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