This page calculates the net radiant heat exchange for two isothermal (constant temperature) parallel flat black disks.

Define the disk radii, spacing, and the disk temperatures. This page will calculate the view factor between disks 1 and 2 and calculate the net radiant heat exchange between the two disks using this view factor.

Help Note  Do you want to know more ?

Radiation Conditions

Description Symbol Value Units
Disk 1 Radius rad1 Meters
Disk 2 Radius rad2 Meters
Spacing (between disks) D Meters
Disk 1 Temperature T1 K
Disk 2 Temperature T2 K

Results for Isothermal Disks

Description Symbol Value Units
r1 = rad1/D r1 None
r2 = rad2/D r2 None
x = 1+(1+r22)/r12 x None
View Factor(1-2) = 0.5*(x-(x2-4*(r2/r1)2)0.5) VF(1-2) None
Heat Radiated = 56.69E-9*VF(1-2)*pi*rad12*(T14-T24) q W

Copyright and Disclaimer Notice

 
powered by MAYA HTT