Brochure

Index
Moody chart .............................................................................................84
Motor ..............................................................................................................17
Motor characteristics .........................................................................98
N
Non-return valve ....................................................................................51
NPSH ...................................................................................... 31, 40, 105, 109
NPSH
3%
-test ............................................................................... 105
NPSH
A
(Available) ....................................................................40
NPSH
R
(Required) .....................................................................41
O
Open impeller .......................................................................................... 16
Open system .............................................................................................49
Operating point ............................................................................... 48, 49
Optical counter ..................................................................................... 104
Outlet ............................................................................................................ 63
Outlet diameter ..................................................................................... 70
Outlet diusor ..........................................................................................22
Outlet flange .............................................................................................14
P
Parasitic losses ........................................................................................80
Pipe diameter........................................................................................... 36
Pipe friction ............................................................................................... 82
Pipe friction losses .............................................................................. 102
Potential energy......................................................................................37
Power consumption ....................................................................31, 104
Power curves ............................................................................................ 38
Prerotation.......................................................................................... 62, 72
Pressure ........................................................................................................32
Pressure loss coecient .............................................................81, 88
Pressure measurement .....................................................................98
Pressure sensor ........................................................................................33
Pressure taps ................................................................ 100, 102
Pressure transducer ................................................................. 100, 101
Primary eddy ............................................................................................ 91
Primary flow ............................................................................................. 19
Proportional-pressure control .......................................................54
Pump curve.................................................................................................31
Pump eciency ...................................................................................... 39
Pump losses .............................................................................................. 79
Pump performance .............................................................................. 30
Pumps for pressure boosting ........................................................ 24
Pumps in parallel ................................................................................... 50
Pumps in series ........................................................................................51
Pumps in series ......................................................................51
Q
QH-curve ..................................................................................................... 34
R
Radial forces .............................................................................. 22, 44, 110
Radial impeller ........................................................................................ 16
Radial velocity .........................................................................................60
Recirculation losses .............................................................................89
Recirculation zones ..............................................................................89
Reference curve .................................................................................... 105
Reference plane............................................................................. 36, 108
Regulering af omdrejningstal .................................................51, 53
Regulation of pumps ...........................................................................51
Relative flow angle .............................................................................. 61
Relative pressure ....................................................................................33
Relative speed .........................................................................................60
Relative velocity .....................................................................................60
Representative power consumption ....................................... 56
126