Hydrogen Compression: Difference between revisions
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*$60/W - [https://www.classbforum.com/forums/f23/sofc-fuel-cells-8360.html] | *$60/W - [https://www.classbforum.com/forums/f23/sofc-fuel-cells-8360.html] | ||
=Efficiency= | =Efficiency and Lifetime= | ||
*Efficiency from electrolysis back to electricity in fuel cells is 45% with fuel cells - p. 11 - [https://www.scribd.com/doc/71456929/e03-05-20hydrogenmyths?secret_password=gow2fk3d1e0gayhwls0#fullscreen&from_embed] | *Efficiency from electrolysis back to electricity in fuel cells is 45% with fuel cells - p. 11 - [https://www.scribd.com/doc/71456929/e03-05-20hydrogenmyths?secret_password=gow2fk3d1e0gayhwls0#fullscreen&from_embed] | ||
*Lifetime of PEM FC is only 2k-4k hours in cars, and 40k in stationary applications. Major issues with longevity! [https://batteryuniversity.com/learn/article/fuel_cell_technology#:~:text=Operating%20a%20PEM%20fuel%20cell,good%20for%20about%2040%2C000%20hours.] | |||
=Seminal Work by Lovins= | =Seminal Work by Lovins= | ||
Revision as of 01:53, 1 October 2020
Info
- Hydrogen Station Compression and Costs from NREL - [1]. Concludes cost of compression, storage, and
- Diaphragm compressor - for hydrogen - [2]
- Piston compressors provide high volume. Easier to do than diaphragm compressors. No need for ultra purity in hydrogen engines. [3]
Low Pressure Storage
- Low pressure hydrogen storage - [4] - NJ demo house.
Companies
- Pure Energy Centre - [5]
Hydrogen Cylinders
- 2000 PSI - 194 cu f (5.5 cu m) [6]
Hydrogen Generator
- 200 cc/min at 3-8 bar - $9k - [7]. With 1440 minutes/day - or 0.3 cu meter per day.
- 1000 cc/min - $3280 - for 1000 ml/min - 1.4 cu meter/day. Alkaline, 4 bar. That is 130 grams of hydrogen per day. [8]
- Redo the same - and 10x lower cost.
- Need 3 hours of Honda EU1000 generator - or 2.7 kWhr.
Demonstration Hydrogen Houses
- Hopewell Project - NJ - [9]. AKA Hydrogen House - [10]
- Scientific American - Oh, only $500k for the off-grid home - [11]
Hydrogen Engines
- https://en.wikipedia.org/wiki/Hydrogen_internal_combustion_engine_vehicle
- Improving the ICE for hydrogen use - [12]
Fuel Cells
Efficiency and Lifetime
- Efficiency from electrolysis back to electricity in fuel cells is 45% with fuel cells - p. 11 - [16]
- Lifetime of PEM FC is only 2k-4k hours in cars, and 40k in stationary applications. Major issues with longevity! [17]
Seminal Work by Lovins
- 20 hydrogen myths - [18]
Resources
- Office of Energy Efficiency and Renewable Energy - [19]