[TRNSYS-users] Matrix-Invert Error

[Bradley Painting <paintingbr@appstate.edu>]

Hi all,

I am modeling a Type56 radiant floor (as an active layer) heated by a solar array. When I increase the solar array size beyond a certain amount (corresponding to about a solar fraction of 0.6) I get this error:

"Subroutine MATRIX-INVERT was called from the type 56 multizone building model with an array size greater than 50 x 50".

I thought it might have something to do with the temperature getting too hot so I entered a high-limit cutoff of 30 °C (for the tank) and got the same error. I also tried increasing the flow from 2,000 kg/hr to 20,000 kg/hr, and the exact same thing happens at the same point in time in the simulation.

At smaller array sizes (less than ~15 m^2) it does not happen.

--

Brad Painting

Master of Science Candidate, Renewable Energy Engineering

Department of Technology & Environmental Design

Appalachian State University

Boone, NC  28608