The best introduction to pulse-jets I found is from Bruno Ogorelec (Croatia) [here]
The pulse-jet can be used as a "gas-generator" for gas-turbine.
- many people have run it on propane. Propane is simplest fuel for experiments
- however, in the end we should be able to use wood-gas as fuel. See MembersPage/MarcellGal/WoodGasifierEngine
- Running on woodgas is not trivial. We need separate intake for air and woodgas, only mixing inside the detonation chamber. We need a BIG gasifier throat. Not 3" throat, maybe 10-12 inch.
- blower (not compressor: the blower pressure ratio is 1.05 .. 1.1) needed, probably all the time (not just to start the gasifier)
- if the standard measures to redirect high speed output gas-stream from the incoming gas does not work ("prohibitive blowback"), we can try Nikola Tesla's Valvular Conduit (1920 patent)
I have sketches of a detonation chamber. We are optimizing it for
- KKK K-28 turbocharger
- can someone recommend a gas-flowrate for KKK K28 turbine (pressure ratio appr 2-2.5 ) ? Near best efficiency would be nice
- using both inputs or just the "outer output" (the closer to the exhaust) ?
- what power engines is the K28 used in ? 320-450 Hp ?
- with 6 NdBFe? magnet axial-gap alternator with Ferrite stator coils
We expect to lower the (otherwise extreme) noise level of the pulse-jet in several ways
- chamber shape
- output snake with different-length runners so the pulse from the same detonation arrives to the turbine at different times.
- the turbine itself helps a LOT to reduce noise (the MembersPage/MarcellGal/PowerAndTraction has a straight-through exhaust system after a K26 turbine, still not very loud)
- we might use low pressure ratio secondary turbines (nozzle + tesla turbine) in series
- mounting in underground well
Hopefully it should be suitable for rural water-pumping, or power-plant for other usage.