Heat radiation between two non-parallel surfaces

[tinatinatina]

Hi everybody,

How do you find the heat radiation between two surfaces that aren’t perfectly parallel or perpendicular to each other?

I know that the view factors play a part, however, I can only dig up view factors for parallel and perpendicular surfaces:

http://machineryequipmentonline.com/hydraulics-and-pneumatics/wp-content/uploads/2016/03/RADIATION-HEAT-TRANSFER-0028.jpg

Is there a formula for finding the view factor and thus the radiation between surfaces between 0-180 degrees?

Many thanks,

Tina

 

[Lord Jestocost]

Have a look at http://www.thermalradiation.net/tablecon.html