[TRNSYS-users] Problem with Type 56 with small time steps / Error: Internal error in solar radiation distribution (sumsitot)...

[Simon Hinterholzer via TRNSYS-users]

Hello Community,

 

i have trouble with calculating 3D buildings with TYPE 56 using small time
steps, for example 0.1 hr, 0.2 hr, 0.25 hr. (but works fine with 1 hr). The
Error Message comes together with two warnings, see below (for 0.1). With
different time steps (0.2, 0.25), the same error occours earlier or later.

 

I use the Meteonorm Weather Files, but this also happens with TMY2.

 

Maybe anybody has some experience with that? 

 

---part of *.lst-file---

 

*** Fatal Error at time   :      1089.300000

    Generated by Unit     :    56

    Generated by Type     :    56

    Message               : Internal error in solar radiation distribution
(sumsitot) of    30.305 % at time  1089.30wave length band no.3 1:total
solar, 2:visual solar, 3:non visual solar

 

*** Warning at time       :      1089.300000

    Generated by Unit     :    36

    Generated by Type     :    15

    Message               : The calculated horizontal diffuse radiation
exceeded the horizontal extraterrestrial radiation and was set to the
extraterrestrial for 56 timesteps during the simulation.

 

*** Warning at time       :      1089.300000

    Generated by Unit     :    36

    Generated by Type     :    15

    Message               : The total horizontal radiation calculated from
the sum of the beam and diffuse horizontal radiation exceeded the horizontal
extraterrestrial radiation and was set to the extraterrestrial. The beam and
diffuse radiation on the horizontal were then calculated base on their
original ratios for 325 timesteps during the simulation.

 

---end part of .lst file---

 

Thanks alot,

Simon

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