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Products  |  Fluid Mechanics and Hydrology  |  Turbomachines  |  HM 365  |  HM 365.31
HM 365.31 Francis and Pelton Turbine Modules Show data sheet (pdf file) Print page
Technical Description
Water turbines are used in hydroelectric power plants that convert the potential energy of the water into mechanical energy, mostly to drive electrical generators. Turbines are classified by their principle of operation into impulse and reaction turbines. In the case of impulse turbines like the Pelton turbine, the static pressures at the wheel inlet and outlet are the same magnitude, while the Francis turbine is a reaction turbine on which the static pressure is larger at the inlet than at the outlet. The conversion of energy takes place on the Pelton turbine at the control device, however on the Francis turbine it is distributed across the control device and the wheel. This distribution is termed the reaction coefficient.
Learning Objectives / Experiments
Together with the HM 365 and HM 365.32, the following experiments are possible:
· Comparison of impulse and reaction turbines
· Turbine characteristic curves
· Determination of the mechanical power
· Determination of the hydraulic power
· Determination of the efficiency
· Influence of the blade setting on the characteristics on the Francis turbine
Features
Comparison between impulse and reaction turbines
Available accessories
HM 365 -- Universal Drive and Brake Unit
HM 365.32 -- Turbine Supply Module
Alternative products
HM 450.01 -- Pelton Turbine
HM 450.02 -- Francis Turbine
Specification
[1] Module on experiments with two different types of turbine
[2] Pelton turbine: 1.5kW at 2750rpm and 6.5bar, wheel diameter 165mm
[3] Francis turbine: 1kW at 3500rpm and 4.2bar, wheel diameter 80mm
[4] Turbines with transparent covers
Technical Data
Transmission ratio motor-turbine 1.44:1
Power regulation:
Francis: variable blade setting
Pelton: variable nozzle adjustment
Dimensions and Weight
lxwxh : 500 x 500 x 500 mm
Weight : together approx. 50 kg
Scope of Delivery
1 Francis turbine, 1 Pelton turbine
Order Details
070.36531 HM 365.31 Francis and Pelton Turbine Modules
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© 2005 G.U.N.T. Gerätebau GmbH