3-24 Supplement
When the heat loss from the plate by convection and radiation equals the solar radiation absorbed, the equation now is:
As this is a nonlinear equation, we use the iteration. First rewrite the equation as
Choose the initial guess
(Since it is the
solution without radiation), then
Told | Tnew |
306.40 | 305.56 |
305.56 | 305.65 |
305.65 | 305.64 |
305.64 | 305.64 |
Answer: 32.6 C |
3-115 Supplement
A wind chill temperature table | |
V(wind velocity) | T(wind chill temperature) |
10 | 7.52 |
20 | 3.18 |
30 | 0.53 |
40 | -1.24 |
50 | -2.47 |
60 | -3.29 |
70 | -3.82 |
80 | -4.11 |
90 | -4.21 |
100 | -4.15 |