3
2
2
2
2
3
3
1
3
1
1
3
1
265
Radiation Exchange in a Nonparticipating Medium
FIGURE 13.7
Radiation heat transfer among a three-surface enclosure.
Apply for surface 1:
where a 11 = (A 1 ε 1 /(1 − ε 1 ) + A 2 F 12 + A 1 F 13 ), a 12 = −A 2 F 12 , a 13 = −A 1 F 13 ,
c 1 = (A 1 ε 1 /(1 − ε 1 ))σT 1
4 .
Apply for surface 2:
where a 21 = −A 2 F 21 , a 22 = ((A 2 ε 2 /1 − ε 2 ) + A 2 F 21 + A 2 F 23 ) , a 23 = −A 2 F 23 ,
c 2 = (A 2 ε 2 /(1 − ε 2 ))σT 2
4 .
2
2
2
2
3
3
1
3
1
1
3
1
265
Radiation Exchange in a Nonparticipating Medium
FIGURE 13.7
Radiation heat transfer among a three-surface enclosure.
Apply for surface 1:
where a 11 = (A 1 ε 1 /(1 − ε 1 ) + A 2 F 12 + A 1 F 13 ), a 12 = −A 2 F 12 , a 13 = −A 1 F 13 ,
c 1 = (A 1 ε 1 /(1 − ε 1 ))σT 1
4 .
Apply for surface 2:
where a 21 = −A 2 F 21 , a 22 = ((A 2 ε 2 /1 − ε 2 ) + A 2 F 21 + A 2 F 23 ) , a 23 = −A 2 F 23 ,
c 2 = (A 2 ε 2 /(1 − ε 2 ))σT 2
4 .