Compressor efficency and C++ programming

[Tony Cooper]

Christopher E. Hill wrote:
> 
> All the talk about super chargers and turbos needs to be cleared up.  Allot
> of discussion has helped, but one point has not been addressed.  The
> efficency is just the amount of heating over what the ideal value should
> be.  If you assume air to be an Ideal gas the efficency of the compressor is:
> 
> efficency= T2s - T1
>            --------
>            T2a - T1
> 
> T2s= Ideal Temperature at state 2
> T1 = Temperature at state 1
> T2a= Actual Temperater at state 2
> 
> T2s= T1*(p2/p1)^(k-1/k)
> k=1.4 for normal temps
> p2= outlet pressure
> p1= inlet pressure
> 
> All temps are in K and pressure in Pa.
> 
> The positive displacement is just how the compressor increases the
> pressure.  Positive displacement is a roots blower, which has about half
> the efficiency of a turbo.
> 
> As a conclusion, efficency for a compressor is just a ratio of ideal to
> actual temperature difference.
> 
> On the C++ programming, I have a project due in which I need to do math
> computations.  I have Borland C++, and I am a beginner on programming with
> it.  I am hoping someone could offer some advice on learning how to do math
> computations using this language (i.e. a book or tutorial on the web).
> 
> Thanks,
> 
> 
> Christopher E. Hill--chill6 at utk.edu

Chris, I will give you what ever help you need, specially as I have just
sorta 'qualified' in the C++ bit for windows (Hey, if it works, does
that mean I pass???????)

Bin doing C stuff for about 15 years now, so fire away.
Tony
-- 
Sent By Tony Cooper.
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