Brochure

Return channel ........................................................................................23
Reynolds’ number ................................................................................. 83
Ring area ..................................................................................................... 62
Ring diusor ..............................................................................................22
Rotational speed.................................................................................... 91
Rotor can ......................................................................................................18
Roughness ......................................................................................81, 82, 85
S
Seal ..................................................................................................................18
Secondary eddy ...................................................................................... 91
Secondary flow ....................................................................................... 19
Self-priming ...............................................................................................25
Semi axial impeller .............................................................................. 16
Separation ...................................................................................................87
Sewage pumps ....................................................................................... 24
Shaft bearing lossses .........................................................................80
Shaft power.............................................................................................104
Shaft seal .....................................................................................................17
Shaft seal loss ..........................................................................................80
Single channel pumpe ................................................................ 16, 27
Slip factor .....................................................................................................73
Specific number .............................................................................. 74, 95
Speed control ......................................................................................51, 53
Stage ..............................................................................................................23
Standard fluid .......................................................................................... 38
Standby pump ......................................................................................... 50
Start/stop regulation ...................................................................51, 53
Static pressure..........................................................................................32
Static pressure dierence ................................................................35
Submersible pump ................................................................................14
Suction pipe ..............................................................................................40
Surface roughness ................................................................................ 91
System characteristics .......................................................................49
System pressure ................................................................................... 107
T
Tangential velocity...............................................................................60
Temperature ........................................................................................... 101
Test bed uncertainty ..........................................................................112
Test results ...............................................................................................117
Test types....................................................................................................98
Test uncertainty .................................................................................... 111
Throat .............................................................................................................22
Throttle regulation .........................................................................51, 52
Throttle valve ............................................................................................52
Tongue ...........................................................................................................22
Torque ...........................................................................................................64
Torque balance ....................................................................................... 64
Torque meter ......................................................................................... 104
Total eciency ........................................................................................ 39
Total pressure ...........................................................................................32
Total pressure dierence ..................................................................35
Transition zone ....................................................................................... 83
Turbulent flow ..................................................................................83, 84
U
Up-thrust .................................................................................................... 44
V
Vapour bubbles ......................................................................................40
Vapour pressure ............................................................................40, 108
Velocity diusion ...................................................................................21
Velocity measurements....................................................................98
Velocity profile ......................................................................................100
127