Our house has a glass sliding door to the shower. The shower has the dimensions of about 2 feet wide, 5 feet long, and 6 feet high. Above the door (and shower head) there is about 1 foot of open space before the ceiling to let the heat escape.
Sometimes I forget to slide the door all the way to the end of the other side, leaving about a 1 inch space in between the door and the wall. Cold air comes through so much that I always known when there is a crack, the amount of cold air I feel does not seem proportional to the opening at all. I would think that the amount of heat being produced by the shower would be enough to where I don't feel the cold air, but that does not seem to be the case.
What I'm thinking is that it is not that the heat is leaving through there, heat is escaping through the top since heat rises, but rather the cold air is coming through the opening due to a difference in pressure. Is this the case? How come it does not seem proportional to the opening?
How come I can feel a fair amount of cold air coming from the small opening at the opposite end of the shower?