Re: [TRNSYS-users] From global solar radiation to direct and diffuse SR

[David BRADLEY <d.bradley@tess-inc.com>]

Wirich,

 Did you also by chance measure global on the horizontal? If so then what I would suggest you do is to define your same vertical surfaces in Type16 and then run your measured global horizontal through it. Type16 will give you an estimate of how the global breaks up into beam and diffuse not only for the horizontal but also for the vertical surfaces. I would then compute the ratios of beam to global and diffuse to global that Type16 gives you for each surface and then use those ratios multiplied by your actual measurements to come up with the components that Type56 wants.

kind regards,

 david

On 06/17/2021 04:15, Freppel, Wirich via TRNSYS-users wrote:

Dear Trnsys users,

 

I measured global solar radiation on vertical surfaces (one for each orientation) using a pyranometer. I would like to use these data on my building model instead of using “internal calculation”.

Type 56 asks for direct and diffuse solar radiation arriving on the surface. How can I manage the data to send the appropriate values to Type 56 ?

 

Thanks in advance for your help

 

Wirich FREPPEL
Development engineer

COSMOS - Buildings Energy Performance & Daylighting Group

Cell: +33 637 053 174

Saint-Gobain Research Compiègne

 

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David BRADLEY
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