Focus on a teacher training workshop: lowcost experiments on different fuel cell types for use in chemistry classes

CHEMKON ◽  
2021 ◽  
Author(s):  
Rebecca Grandrath ◽  
Claudia Bohrmann‐Linde
Author(s):  
Carlos Arguedas-Matarrita ◽  
Sonia Beatriz Concari ◽  
Javier Garcia-Zubia ◽  
Susana Teresa Marchisio ◽  
Unai Hernandez-Jayo ◽  
...  

1995 ◽  
Vol 6 (3) ◽  
pp. 197-210
Author(s):  
Martin R. Fry

This Paper describes the principles of the fuel cell as a power (and usually heat) generation device, including a discussion of the supporting system, or Balance of Plant - an essential necessity for commercial applications. It goes on to describe the variety of fuel cell types, their status and potential applications. Reference is then made to the major international participants in fuel cell R&D and the rapidly growing UK programme, supported both by the DTI and EPSRC. Finally, an attempt is made to project timescales for the emergence of commercial products, with due recognition for the barriers to development and the rapid progress towards reduced environmental impact being made by conventional alternative power sources.


1971 ◽  
Vol 18 (4) ◽  
pp. 250-252
Author(s):  
Steven S. Dickoff

In a recent teacher-training workshop conducted by the author, a question arose concerning a method for duplicating the seven pieces of the ancient Chinese tangram puzzle without having to trace the pieces of another puzzle. After some thought about the relationships of the pieces in the puzzle to one another, the following paper-folding and cutting method, illustrated diagrammatically, was conceived.


2011 ◽  
Vol 36 (13) ◽  
pp. 7696-7706 ◽  
Author(s):  
W. Khaodee ◽  
S. Wongsakulphasatch ◽  
W. Kiatkittipong ◽  
A. Arpornwichanop ◽  
N. Laosiripojana ◽  
...  

Author(s):  
Dustin McLarty ◽  
Scott Samuelsen ◽  
Jack Brouwer

Fuel Cell–Gas Turbine (FC-GT) hybrid technology portends a significant breakthrough in electrical generation. Hybrid systems reach unprecedented high efficiencies, above 70% LHV in some instances, with little to no pollution, and great scalability. This work investigates two high temperature fuel cell types with potential for hybrid application ranging from distributed generation to central plant scales; sub MW to 100MW. A new library of dynamic model components was developed and used to conceptualize and test several hybrid cycle configurations. This paper outlines a methodology for optimal scaling of balance of plant components used in any particular hybrid system configuration to meet specified design conditions. The optimization strategy is constrained to meet component performance limitations and incorporates dynamic testing and controllability analysis. This study investigates seven different design parameters and confirms that systems requiring less cathode recirculation and producing a greater portion of the total power in the fuel cell achieve higher efficiencies. Design choices that develop operation of the fuel cell at higher voltages increase efficiency, often at the cost of lower power density and greater stack size and cost. This work finds existing SOFC technology can be integrated with existing gas turbine and steam turbine technology in a hybrid system approaching 75% fuel to electricity conversion efficiency in optimized FC-GT hybrid configurations.


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