how is the air pressure in a tightly sealed house affected by operating the furnace?
2006-11-27 09:33:45 · 5 answers · asked by AnnaQ 1 in Science & Mathematics ➔ Physics
If the combustion air comes from inside the house, look at the chimney and you will see how much air is needed to be replaced in the house. So the pressure in the house will drop below atmospheric and air will be "sucked" in from somewhere. If the house is air tight, the furnace will eventually stop working when the draw caused by heat rising in the flue is countered by the low pressure in the house.
2006-11-27 09:51:23 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Theoretically speaking, the temperature increase should increase the volume of the gas, that is, the air, inside the house. This means that the pressure will increase with the temperature. This is the theory. However, it is very difficult to create a tightly sealed house (an entire house) and the increase in pressure will leak at the weak points of the seal.
2006-11-27 17:50:01 · answer #2 · answered by Alex R 1 · 0⤊ 0⤋
rh is making up his own ? here.....Since you didn't say there was a hole for combustion air to come in, I'll assume there's not. The pressure in the house will decrease. If it's perfectly sealed, the furnace will eventually go out from lack of O2. As will the occupants!
2006-11-27 17:47:04 · answer #3 · answered by Steve 7 · 0⤊ 0⤋
It won't change, because a tightly sealed house will have a combustion air intake from outside the house.
2006-11-27 17:38:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋
If the temperature goes up and the volume stays the same, the pressure goes up
2006-11-27 17:43:08 · answer #5 · answered by SteveA8 6 · 1⤊ 0⤋