Propane EFI part duece

[Francisco Jose Kiss]

Hi! 
I got some data on Propane that may be useful and may be can spare Greg
some work; here it goes:

Boiling point (deg.C @ 1 bar.)  -42
Critical Temperature (deg.C)   97     98,9   (different sources)
Critical pressure  43.28 atm.    27.34 kg/cm2 abs.  (I think one o these
is wrong)
Vapor pressure (bar.) at different temperatures     0 C       4.7
                                                    15 C      7.5   
(6,4 kg/cm2)
                                                    20 C      8.3
                                                    50 C      17.0
                                                    65 C      24.0
Vapor density(kg./m3 0 deg.C 1 atm.)         2.00
Vapor density(kg./m3 15 deg.C  1 bar.)       1.88
Liquid density (kg./dm3 at boiling point, 1 atm. 0.58
Liquid density at critical point (kg./dm3) 0.224

Vaporization heat (kcal./kg. at boiling point  1 atm.) 101.7

1 dm3 (or liter) of liquid produces 331 dm3 of vapor at 15 deg.C  1 bar.

If consider the liquid specific volume at 65 deg. C    100%
then   at   50 deg.C          it would be               93%
and    at   15 deg.C          it would be               82%
(jus to to have an idea of the expansion of the liquid)

Hope this is of some help
Regards
kiss


> Date: Thu, 06 Jul 2000 09:25:35 +0100
> From: Franc Buxton <fab at dcs.warwick.ac.uk>
> Subject: Re: Propane EFI - part duece
> 
> Greg Hermann wrote:
> >
> >
> > I don't have the books right where I can pick them up right now, but later
> > on I will try to find the time to post the specific volume --and other--
> > data for propane at its critical point. For now, suffice to say that the
> > critical pressure for propane is nowhere NEAR 227 bars! The source book
> > will be "Thermodynamic Properties of Refrigerants", as published by ASHRAE.
> > Propane is a _VERY_ good refrigerant, thermodynamically speaking. The only
> > real problem with it is its high flammability. It is the refrigerant of
> > choice in most refineries--where its flammability is not of particular
> > concern, since everything in the place burns anyway!
> >
> > Regards, Greg
> >
> 
>         Thanks, Greg, I'll look forward to that information - in the meantime
> I'll shut up until I find out more, but I just don't plan to be doing any
> propane tank warming experiments for the time being! :>)
> 
>         Best Regards,
>                 Franc.
> - --
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