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Re: [EnergyPlus_Support] performance curves of York units
Correct me if I am wrong but with DOE-2 you have to normalize the data
points before you use the DOE-2 curve fit command. Regardless of the units
used to determine the normalized data points, the curve is the same shape?
>Another user suggested using DOE-2 to do the curve fit. If you do that, you
>have to be very careful about units conversions. You would need to enter the
>values as SI values in the DOE-2 curve fit command.
>
>Mike
>
>
>On 25 Feb 2004, at 12:46, Edward Lyon wrote:
>
> > I think you may need the math power of MathCad to do a biquadratic easily,
> > otherwise you will need to program a solution yourself.
> >
> > Ned Lyon
> >
> > Senior Project Manager
> > Simpson Gumpertz & Heger Inc.
> >
> > 41 Seyon Street
> > Building #1, Suite 500
> > Waltham, MA 02453
> >
> > Phone: 781-907-9000
> > Fax: 781-907-9009
> >
> >
> > >>> dcormier81@xxxxxxxxxxx 2/24/2004 8:29:06 AM >>>
> > yes, excel do a good job for quadratic curve .... but the
> > biquadratic?????????
> >
> > if you are able to make biquadratric (f(x,y)) curve with, tell me how ...
> >
> > david
> >
> >
> > >From: ÕŹâÓñ <zh_guangyu@xxxxxxxxxxxx>
> > >To: dcormier81@xxxxxxxxxxx
> > >Subject: Re: [EnergyPlus_Support] performance curves of York units
> > >Date: Tue, 24 Feb 2004 09:55:01 +0800 (CST)
> > >
> > >if you can input the data into excell work sheet, then it is easy to
> find the
> > >vurve. by using curve fitting, you quickly get the curve
> > >
> > >
> > >
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>========================================================
>Michael J. Witte, GARD Analytics, Inc.
>EnergyPlus Testing and Support
>EnergyPlus-Support@xxxxxxxx
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