[TRNSYS-users] Type 50 Problems to put thermal parameters

[David BRADLEY]

Daniel,

   Type50 takes a more theoretical approach to the thermal part of the 
model. It is actually calculating the collector loss coefficients based 
on the physical parameters that you give it. The a0, a1, and a2 
coefficients that you have from the manufacturer are similar to the 
Fr(ta) and FRUL outputs that the model computes and displays. I would 
use whatever physical data you have (number of covers, etc.) and then 
tune the values of the collector parameters that you don't have (plate 
absorptance, for example) until you get similar thermal performance from 
Type50 and from a "standard" quadratic efficiency collector model such 
as Type1 that allows you to enter a0, a1, and a2 directly.

kind regards,

  David


On 1/3/2023 6:32 AM, Daniel Arbiol via TRNSYS-users wrote:
>
> Dear users:
>
> Currently I'm trying to use type 50 (PVT flat solar collector).
> To define its thermal efficiency, I have the data from the 
> manufacturer: the 3 coefficients of the efficiency curve, a0,a1 and a2 
> (quadratic efficiency).
> But there are no parameters inside the type that match these data. Any 
> clue of how can I introduce them in this type?
>
> Thanks in advance.
>
>
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> TRNSYS-users at lists.onebuilding.org
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-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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