Dear Joke, I do not think that there is a model for a tree.But if you can estimate the shading effect of the leaves over the year you can just add an equation, which recalculates the radiation on the window pane. If you aim for more sophisticated tree features (angle dependence, diffuse & direct transmission through the leafage) you will have to write a more complex equation...
Best regards, Jochen Joke De Beuckelaer schrieb:
Dear all, Thus there exists a type to model a tree (which loses leaves in the winter)? Greetings, Joke De Beuckelaer project engineer mep VK HEALTHCARE | BUILDINGS | INDUSTRY | INFRA Value by design VK ENGINEERING Avenue Clemenceaulaan 87, 1070 Bruxelles Brussel, Belgium t +32 2 414 07 77 f +32 2 414 04 98 m +32 473 97 01 50 e joke.d@vkgroup.be w www.vkgroup.be VK WILL BE CLOSED FOR THE HOLIDAYS FROM 18/07-29/07 (Roeselare) // 11/07-29/07 (Brussels, Ghent, Bruges) ****DISCLAIMER**** This communication is confidential and for the sole useof the addressee. If you are not the intended recipient, please immediately notify the sender by e-mail at the address shown and then delete it from your system without copying, disclosing or forwarding its contents. Thank you.
-- _________________________________________________ Dipl.-Ing. (FH) Jochen Döll Division Thermal Systems and Buildings Fraunhofer-Institut für Solare Energiesysteme ISE Heidenhofstrasse 2, 79110 Freiburg, Germany Phone: +49 (761) 4588-5468 Fax: +49 (761) 4588-9000 jochen.doell@ise.fraunhofer.de www.ise.fraunhofer.de _________________________________________________