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Rustic Retreat

Live broadcasts and documentation from a remote tech outpost in rustic Portugal. Sharing off-grid life, the necessary research & development and the pursuit of life, without centralized infrastructure.

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DSpace

DSPace - Map everythingMap everything!

Mission-Tags

This is an old revision of the document!


Pelton-Turbine calculations

ParameterSymbol/RelationshipUnitNotes
Jetspeedv = \sqrt{2*g*H}m/sDue to friction losses the jet will be 2-4% slower
Height/HeadHm
Earth Gravitationgm/s²9,81 m/s²
Turbine RPMRPMt = {v}/{2R}rad/sOptimum RPM is about 2-10% lower
Jet-Turbine RadiusRmCenter axis to cup center
Jet cross-sectionA = {Q}/{v}adjusted by nozzle
Water volumeQm³/s
Jet diameterd = \sqrt{{4A}/{pi}}m
Cup heightb \approx 2.4*pm+/- 12% tolerance in construction