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[EnergyPlus_Support] Re: Performance Table for Biquadratic Curve
Thank you Richard but it doesn't solve my crash.
I have no warning, just a crash.
In the example file LookUp Tables there are 4 twoIndependentVariables Objects which use 42 pairs of data (6*7) for the first 2 objects and 30 pairs for the last 2 objects. I have tried with 7*7=49 output results.
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad <RRaustad@...> wrote:
>
> A bi-quadratic requires a 7x7 matrix (number of coefficients + 1).
> Didn't the error file have a warning? Try adding another data point in
> your table.
>
> X = a + b * T1 + c * T1^2 + d * T2 + e * T2^2 + f * T1*T2
>
> # of data points = 6 (f) + 1 = 7
>
> On 6/9/2011 6:02 AM, dgerome06 wrote:
> >
> > Hi,
> > i would like to create a biquadratic curve thanks to datas extracted
> > from the literature. I used a Performance Table Object with two
> > independent variables. I looked at the example file LookUp Tables and
> > have done something similar.
> >
> > My problem is that the simulation crashes when i add this object into
> > my idf file. The example idf file doesn't crash.
> > I have tried to change the interpolation method without any success.
> > I gave 6 * 6 data pairs.
> > Units for X and Y are temperature.
> > Unit for Output is dimensionless.
> > I put temperature in Celsius but i put only positive temperatures.
> > Is it necessary to put Kelvin temperatures??
> >
> > I hope that someone could help me.
> >
> > Many thanks.
> >
> > Jerome DEROCHE
> >
> >
>
> --
> Richard A. Raustad
> Senior Research Engineer
> Florida Solar Energy Center
> University of Central Florida
> 1679 Clearlake Road
> Cocoa, FL 32922-5703
> Phone: (321) 638-1454
> Fax: (321) 638-1439 or 1010
> Visit our web site at: http://www.fsec.ucf.edu
>
> UCF - From Promise to Prominence: Celebrating 40 Years
>
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