<html>
<body>
Dear trnsys users and developers,<br><br>
by checking type 34 (Overhang and Wingwall Shading) I found a possible
bug in the calculation of the global radiation incident on a vertical
unshaded surface.<br><br>
It's calculated as:<br><br>
<dl>
<dd>GTOT=(GB+GD*0.5d0+RHO*GR) (with GB=beam rad; GD=
diffuse rad on horizontal; GR=total rad on horizontal)<br><br>
</dl>while I think there should be a ground view factor=0.5 taken into
account, so that:<br><br>
<dl>
<dd>GTOT=(GB+GD*0.5d0+0.5d0*RHO*GR)<br><br>
</dl>GTOT is used in the fraction of solar shading calculation.<br><br>
Is there anybody who can say what is right?<br><br>
Thanks in advance<br><br>
Adriana<br><br>
<br><br>
<br>
--------------------------------------------------------------------------------------------------<br>
Adriana Angelotti<br>
Politecnico di Milano<br>
Dipartimento di Scienza e Tecnologie dell'Ambiente Costruito (Best)<br>
v. Bonardi 3<br>
20133 Milano, Italy<br>
Ph +39 02.2399.5183<br>
Fax +39 02.2399.5118<br>
e-mail adriana.angelotti@polimi.it </body>
</html>