Hydrocarbon Vapor Pressure
Hydrocarbon Vapor Pressure
(OP)
Can somebody assist me in getting a hydrocarbon vapor pressure chart? Mainly I need to get the vapor pressure for gas oil and gasoline. I need this information to compare between the factory NPSH required and the NPSH available physically.
For more clarification, The minimum NPSH available is zero meters while the Facotry NPSH required is 2.2meters (Of course this is tested on water).
The product we are using is gasoline & gas oil, so I need to get the physical NPSH required in order to know if the pump can operate without cavitation when the NPSH available is zero meters.
For more clarification, The minimum NPSH available is zero meters while the Facotry NPSH required is 2.2meters (Of course this is tested on water).
The product we are using is gasoline & gas oil, so I need to get the physical NPSH required in order to know if the pump can operate without cavitation when the NPSH available is zero meters.





RE: Hydrocarbon Vapor Pressure
Here's the rest. Gas-Oil won't be higher than the kero curve (lowest curve on the chart)
http://virtualpipeline.spaces.msn.com
RE: Hydrocarbon Vapor Pressure
Thanks for your reply.
RE: Hydrocarbon Vapor Pressure
Just saw the graph says psia, but its Reid Vapor Pressure that is plotted. It can be correlated to psia by looking at the table on page 76 here,
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http://virtualpipeline.spaces.msn.com
RE: Hydrocarbon Vapor Pressure
You can get vapor pressure data for most of the liquids at http
This is a chart for NPSH reduction
http
Thumb rules for NPSH reduction.
http://www.pumps.org/content_detail.aspx?id=998
PS: Just check whether you can apply this particularly for gasoline.
RE: Hydrocarbon Vapor Pressure
http://virtualpipeline.spaces.msn.com
RE: Hydrocarbon Vapor Pressure
Thanks for the confirmation. I wanted to be extra cautious as I don't have experience with pumping gasoline. I think I have seen some previous posts by experts (of this or chemical engineering forum) suggesting not to bank on this extra advantage.
RE: Hydrocarbon Vapor Pressure
http://virtualpipeline.spaces.msn.com
RE: Hydrocarbon Vapor Pressure