[200q20v] Re: [UrS-technical] atmosphere and compressor maps - read'n 'riting & 'ritmatic

[Feico van der Laan]

There may be a 2-4% error in this calculator. He uses
the assumption that the standard conditions are:  Air
temp 77 deg F,   29.235 Inches Hg Barometer, 0 ft
altitude, 0% relative humidity. 

Standard air temperature is considered 59 Degrees @
29.235 inches Hg. If my memory serves me correctly.

http://home.sprynet.com/~rshelq/calc_hp_dp.htm

Best regards,
Feico van der Laan
--- mlp <mlped at qwest.net> wrote:
> Great link Feico.  FWIW, those who care can also
> try:
> http://home.sprynet.com/~rshelq/calc_hp_dp.htm
> And, as the author points out there is some (at
> least to me) surprising
> detailed and what looks to be very good information
> and descriptions of
> altitude density etc. available at USA Today's
> weather web pages, e.g..
> http://www.usatoday.com/weather/wdencalc.htm.
> 
> For an uncommonly detailed write up of this whole
> process, including
> "adiabatic Processes" and the reading, 'riting &
> 'ritmatic of turbos &
> compressor maps etc you might want to run through
> parts of John Lucius
> 3000GT/Stealth pages - www.3si.org , I think the
> actual link may have been
> http://www.3si.org/member-home/jlucius/2-primer.htm
> or something like that.
> 
> On compressor maps alone, try
> http://www.vfaq.com/mods/Turbo-compressor-maps.html
> 
> Mike P.
>   -----Original Message-----
>   From: Feico van der Laan [mailto:feicov at yahoo.com]
>   Sent: Saturday, March 17, 2001 6:15 AM
>   To: John Petersen; UrS-technical at yahoogroups.com
>   Subject: Re: [UrS-technical] atmosphere and
> compressor maps
> 
> 
>   John,
> 
>   Attached is a link. It may be a little more than
> you
>   need. I have a formula which I will try to dig up
>   somewhere
>   http://www.webtripper.com/automotive/tech/
>   Best regards,
>   Feico van der Laan
> 
>   --- John Petersen <petersen007 at earthlink.net>
> wrote:
>   > Hello everyone,
>   >       I'm very interested in information
> pertaining to
>   > the effects of
>   > temperature, (atmospheric) pressure, and
> humidity on
>   > the efficiency, surge
>   > limits and flow limits of turbos. Anyone have
> any
>   > ideas on where I can find
>   > this?
>   >
>   > thanks
>   > -John
> 
> 


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