Re: [microhydro] entrance angle for banki turbines (alpha)

[dimitar partenov]

Dear Orlando,
I agree with you but you have to in mind that the
original angle that each constructor choice is Alfa
not  Beta 1.
Dimitar
--- "Orlando A. AUDISIO" <[EMAIL PROTECTED]>
wrote:
> 
> Dear Dimitar;
>          Respect to the angle in Nozzle (Inyector)
> of Cross Flow Turbine 
> (alpha1), this angle is in relation with angle of
> the blade (beta1) for the 
> following relation:
> 
>                                 Sin (Alfa1)
> Beta1= ArSin ( -------------------------)
>                            (1-3/4*(Cos Alfa1)^2)
> 
> 
>          Moreover, alpha1 is the absoluta velocity
> angle (C1).  Considering 
> aspecto of manufacture (construction), is most easy
> Beta1=30&#1108;, then 
> Alpha1=16,102.  If Beta1=29,99&#1108;,
Alpha1=16,00&#1108;.
>          yours Sincerelly
>
************************************************************************************
> 
> 
> 
> 
> At 02:49 p.m. 04/04/05 +0100, you wrote:
> 
> 
> 
> >hi,
> >yes it can change but if angle is small the
> >constraction of nozzle is difficult. Some companies
> >pradus turbine with angle of 12 even less to 8
> >degrees.
> >Dimitar
> >--- candangil <[EMAIL PROTECTED]> wrote:
> > >
> > >
> > >
> > > I have a question to the group:
> > >
> > > Can we say that does the entrance angle is 16
> > > degrees for all type of
> > > crossflow turbines (crossflow turbines that made
> by
> > > all companies)
> > > or does it change according to the companies?
> > >
> > > I mean the "absolute velocity angle-alpha"
> > >
> > > If it changes,what is the degree-range for
> banki?
> > >
> > > Regards.
> > >
> > > Kenan
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
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> Ing. Orlando Anibal AUDISIO
> UNIVERSIDAD NACIONAL DEL COMAHUE
> Fac. de Ingenieria
> Dpto. de Mec&#1073;nica Aplicada
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> 


                
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