Physics refridgerator problem...?

Question

If you leave the refrigerator door open what happes to the temperature of the room??
the answer is it gets hotter beause heat loss > than heat given off..

cool < heat given off becaues of electrical energy...

can you explain this to me..?

Answer 1

Initially upon opening the door there is a reduction in the temperature of the room.
After a while the cold air and surfaces in the refrigerator are warmed by the room's air. When the inside temperature approaches the outside temperature even the area in front of the refrigerator gets warmer.
The laws of thermodynamics say that there is no free lunch. A refrigerator normally works by moving heat from inside the refrigerator to outside the refrigerator. Normally the hot part of the refrigerator is behind the refrigerator next to the wall. This process is normally accomplished by an electric motor pumping a special fluid through a valve. The electricity driving any electric motor produces heat. The heat delivered to the outside of the refrigerator is equal to the heat removed from the inside of the refrigerator. There are thus three components to this heat story.
The sum of those three components is just the heat produced by the electric motor. Since the motor is generating heat the room gets warmer as soon as the cold interior of the refrigerator warms up.