2 replies to this topic

[dhns]

Dear all,
Whenever designing the GES EJECTOR ,the molicular weight of the gas is important factor or not?kindly inform about the design method or resourses.

Regards,
dhns,

[Zauberberg]

Mass and volumetric flows of suction gas are inter-dependent variables, and factor is molecular weight.

Quotation:

"For the most effective design of a jet vacuum pump the following data are required:
Suction medium:
- composition, mol mass [kmol/kg]
- suction flow ·M0 in [kg/h] or [kg/s]
- suction pressure p0 (absolute pressure) [mbar]
- temperature T0 [°C]
- counter pressure p (absolute pressure) [mbar]

Motive medium:
- pressure, p1 (over pressure or absolute pressure) [bar]
- temperature T1 [°C]

Cooling medium:

- temperature[°C]
- head pressure [bar]

These data determine arrangement, number of stages, motive and cooling medium consumption."

Source: GEA Jet pumps
More info at: http://www.geajet.co...bDoc/ndkw74bhlw
and: http://www.graham-mfg.com/

I hope this helps in your query. I remember GEA website had very useful charts for estimating ejector load/size, but I couldn't find them.

[dhns]

Dear Zauberberg,

Thanks for your valuble reply message and resersources links.

reg,
dhns.