Why%20do%20my%20windows%20get%20frosty?

1
Why do my windows get frosty?

• By
• Ryan Woodland
• Rob Branham

2
Frost is found on the rear window and not on the
side windows.
No frost
3
Frost is found on the rear window and not on the
side windows.
Frost beginning to form.
4
Equations

• Windows approximated as a rectangular surface on
  an infinite flat plane
• A1 window
• A2 ground
• A3 sky

5
Results
6
Conclusions and Recommendations

• Higher heat loss is found in the window with
  lower angle with respect to the ground.
• The windows that are more open to the sky reach a
  lower temperature faster than the windows that
  are not as open to they sky.
• Any method that blocks this radiation will keep
  more heat in the car longer.
• parking in a garage rather than on the street
• putting a cover over your car at night
• parking under a tree