No.

Description

Parameter

1

Exit angle of impeller at shell (˚)

${\alpha }_{\text{s}1}$

2

Inlet angle of impeller at shell (˚)

${\alpha }_{\text{s2}}$

3

Conic factor of impeller blade at shell

$f_{\text{cs}}$

4

Offset size of impeller blade at shell (mm)

$d_{\text{s}}$

5

Exit angle of impeller at core (˚)

${\alpha }_{\text{c}1}$

6

Inlet angle of impeller at core (˚)

${\alpha }_{\text{c}2}$

7

Conic factor of impeller blade at core

$f_{\text{cc}}$

8

Offset size of impeller blade at core (mm)

$d_{\text{c}}$

9

Bias angle of impeller (˚)

$\beta$

10

Blade number of impeller

z

11

Blade thickness of impeller (mm)

t