434
edits
Project:HydrogenPoweredEngine: Difference between revisions
From London Hackspace Wiki
→Further Research
Samthetechie (talk | contribs) |
Samthetechie (talk | contribs) |
||
| Line 23: | Line 23: | ||
Because of hydrogen’s wide range of flammability, hydrogen engines can run on A/F ratios of anywhere from 34:1 (stoichiometric) to 180:1. The A/F ratio can also be ex-pressed in terms of equivalence ratio, denoted by phi (Φ). Phi is equal to the stoichiometric A/F ratio divided by the actual A/F ratio. For a stoichiometric mixture, the actual A/F ratio is equal to the stoichiometric A/F ratio and thus the phi equals unity (one). For lean A/F ratios, phi will be a value less than one. For example, a phi of 0.5 means that there is only enough fuel available in the mixture to oxidize with half of the air available. Another way of saying this is that there is twice as much air available for combustion than is theo-retically required. | Because of hydrogen’s wide range of flammability, hydrogen engines can run on A/F ratios of anywhere from 34:1 (stoichiometric) to 180:1. The A/F ratio can also be ex-pressed in terms of equivalence ratio, denoted by phi (Φ). Phi is equal to the stoichiometric A/F ratio divided by the actual A/F ratio. For a stoichiometric mixture, the actual A/F ratio is equal to the stoichiometric A/F ratio and thus the phi equals unity (one). For lean A/F ratios, phi will be a value less than one. For example, a phi of 0.5 means that there is only enough fuel available in the mixture to oxidize with half of the air available. Another way of saying this is that there is twice as much air available for combustion than is theo-retically required. | ||
Hydrogen | Hydrogen | ||
===Other Homebrew Hydrogen Fuelled Engine Experiments=== | |||
[http://www.youtube.com/watch?v=3JbXLGIL_fc#t=3m37s Lawnmower engine running from a balloon of hydrogen] | |||
==Definitions== | ==Definitions== | ||
