2007-02-13 17:57:02 · 7 answers · asked by Bobby 1 in Science & Mathematics ➔ Physics
A refridgerator works by removing heat (energy) from the air inside it and transferring that heat to the air outside it through the cooling fins at the back. When the refridgerator is in a closed room with its door open, all it is doing is transferring heat from the air in front of it to the air behind it, adding some extra heat along the way from the motor and compressor. Hence it has really become a really inefficient heater.
However, if you could arrange it so that the cooling fins were outside of the room, i.e. the other side of the window or through a hole in the wall, then the room would get colder when the door is left open since now the heat energy is being transferred from inside the room to outside the room. Funnily enough, that's just how air conditioning works !
2007-02-14 00:06:06 · answer #1 · answered by Timbo 3 · 0⤊ 0⤋
A closed room does not become cool when the doors of a refrigerator is kept open becoze the amount of coldness given by it is compensated with the heat liberated by the refrigerator.
2007-02-13 19:04:40 · answer #2 · answered by Bia 1 · 0⤊ 0⤋
Because the heat coming off the radiator coils on the back of the refrigerator is more than the cool coming from the inside of the refrigerator. The energy coming into the refrigerator through the power cord is converted to heat as the refrigerator compresser works to move heat from inside to the coils on the back.
2007-02-13 18:11:46 · answer #3 · answered by James M 2 · 0⤊ 0⤋
A refrigerator does not destroy heat. It pumps it from the inside to the outside. But in addition to the same heat recirculating, the motor generates more heat. So a frig is a heater as far as the room is concerned.
2007-02-13 18:10:56 · answer #4 · answered by Roy E 4 · 2⤊ 0⤋
Because the efficiency of any cooling process is less than 100%. That means that the amount of heat generated is greater than the amount of heat removed from the compartment.
2007-02-13 18:03:38 · answer #5 · answered by arbiter007 6 · 0⤊ 1⤋
because the hot energy that comes out from the back of the refrigrator is more than the cool energy.
if you want to make sure read the second law of termodinamics.
2007-02-13 18:54:58 · answer #6 · answered by amir 2 · 0⤊ 0⤋
Because it's not enough to cool it. Hot air always tries to even out with cool air.
2007-02-13 18:00:33 · answer #7 · answered by Isabela 5 · 0⤊ 1⤋