Jump to content

Modelled Irradiation


Justin McMillan
 Share

Recommended Posts

Hi Justin,

unfortunately there is no such "best" answer when it comes to irradiation, especially to the irradiation on the inclined plane. But I would recommend you to have a look at our help pages first to see how these models all connect (probably you are already aware of that):

https://help.valentin-software.com/pvsol/2018/calculation/irradiation/

Then, in order to estimate the quality of the combination of the Hofmann model (for diffuse irradiation) and Hay & Davies (for the tilted plane) I would recommend these two papers which we published some years ago:

The first one explains the Hofmann (my) model, and also validates it for 28 locations worldwide, 2 of which are in UK (Camborne and Lerwick)

https://www.mdpi.com/1996-1073/10/2/248

The second one uses a bunch of irradiation models and combines them together, for different time resolutions as well (as the models behave very differently when using one hour or one minute time steps)

https://www.mdpi.com/1996-1073/10/10/1495

The outcome of this is that the combination of Hofmann and Hay&Davies can be considered as the most "trustworthy". But we (the community in general) do not have much measurement data for the irradiation on the tilted plane, so the validation is difficult there.

For Hannover, Germany and Boulder, USA we made a study that searched for the "best" model for the tilted plane:

https://www.mdpi.com/1996-1073/10/11/1688

Another very interesting study on that topic, but again without measurement data from UK is this one from Dazhi Yang:

https://www.sciencedirect.com/science/article/pii/S0038092X16302432?via%3Dihub

 

And, finally, a good study that examines various diffuse models, espacially for UK (unfortunately the Hofmann model was not included, BRL wins):

https://www.mdpi.com/1996-1073/10/2/181

 

Kind regards,

Martin

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...