Differences

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--- mission:log:2011:09:10:pelton-turbine-calculations [2012/02/18 19:53] – created chrono
+++ mission:log:2011:09:10:pelton-turbine-calculations [2013/06/08 10:52] (current) – chrono
@@ Line 1: / Line 1: @@
+====== Pelton-Turbine calculations ======
+===== =====
+{{:mission:log:2012:02:pelton.gif?200|}}
+^Parameter^Symbol/Relationship^Unit^Notes^
+|Jetspeed|<x 12>v = \sqrt{2*g*H}</x>|m/s|Due to friction losses the jet will be 2-4% slower|
+|Height/Head|<x 12>H</x>|m| |
+|Earth Gravitation|<x 12>g</x>|m/s²|9,81 m/s²|
+|Turbine RPM|<x 12>RPMt = {v}/{2R}</x>|rad/s|Optimum RPM is about 2-10% lower|
+|Jet-Turbine Radius|<x 12>R</x>|m|Center axis to cup center|
+|Jet cross-section|<x 12>A = {Q}/{v}</x>|m²|adjusted by nozzle|
+|Water volume|<x 12>Q</x>|m³/s| |
+|Jet diameter|<x 12>d = \sqrt{{4A}/{pi}}</x>|m| |
+|Cup height|<x 12>b \approx 2.4*p</x>|m|+/- 12% tolerance in construction|
+{{tag>energy pelton turbine}}
+~~DISCUSSION~~