Suppose on wishes to cool a kitchen by leaving the refrigerator door open and closing all doors and window.?

Question

What happs to the room temperature? Why?

Answer 1

The room temperature will go up. The reason is because in order to cool, the refrigerator has to use energy to create a temperature gradient. The coils on the back of the refigerator get hot, while the inside gets cold. If the refigerator is in an isolated room, and it has the door open, you will be using energy to cool one side of the refigerator and heat the other side. Since the heating is always more than the cooling (due to the 2nd law of thermodynamics) the temperature of the room will increase.

Answer 2

Well, its not possible to cool the room. Its something like this, the compressed gases in the tubes behind the refrigerator absorb the heat from inside the refrigerator and transfer the heat to the outside when they expand. So, the system will need a place to drain their heat. So if u close the doors and windows in a room, open up the fridge door, what happens is, the fridge draws heat from its front, drains it in the rear side. In the end, the heat will remain confined to the room. If u really want to cool the room with a fridge, keep the fridge on the room door's path, then, it will draw heat from the room, drain it in another room. then it functions somewhat like an AC. Energy can neither ne created nor be destroyed, can only be transferred with a loss.

Answer 3

The room temperature will rise - as many have said before me, the refrigerator simply removes the heat from the air it is forcing into the storage areas, and expells it through the coils on the back. You'd be expelling the heat into the same space you are trying to cool and would have a compressor constantly running and throwing off heat. The refrigerator would, over time, become overwhelmed and the compressor would fail after a while.

Answer 4

The first two posters are absolutely incorrect. The room would heat up. It's a classical example from thermodynamics.

In a nutshell your refrigerator pumps the heat from the inside to the outside. In order to cool the room you would need to pump the heat OUT of the room. If the compressor in the fridge was perfect, the temperature in a perfectly closed room would not change. However the compressor is less than 100% efficient and therefore generates heat.

-Tom

Answer 5

The temperature in the room will increase. Why? because the fridge is far from 100% efficient. For every unit of heat it takes out of the interior, it chucks out about 3 units of heat through the radiator (usually at the back), so you'll get a net energy increase = higher temperature.

Answer 6

It increases. The heat pump in the fridge pumps heat from the inside of the fridge into the room. This would not change the room temperature at all if the process were 100% efficient, but it is not: it takes electricity to run the motor, which winds up as heat, and warms the room.

Answer 7

simply by fact it won't paintings, and the nutrition interior your frig will destroy! heavily, a refrigerator works by removing the warmth from the insulated element of the field (the interior of your frig) and moving it to the exterior, oftentimes in the process the coils on the returned of the unit. So, at a similar time as the interior cools off, the exterior heats up. in case you allowed your frig to paintings with the door open for any length of time, the air interior the room could actual exchange into hotter, not cooler.

Answer 8

You will actually raise the temperature of the room somewhat. The refrigerator doesn't "produce" cold air, it merely removes the heat from the contents (to the evaporator)and expels it at the rear (to the condenser).
Because it isn't 100% efficient, the total amount of heat generated will exceed the heat that is being absorbed.

Answer 9

Well, it would take a while but the room would eventually cool. but it would only be slight, as for the most part a kitchen is significantly larger than a refrigerator. Also, heat moves from warmer objects to cooler objects. Eventually the inside of the refrigerator would warm up, and the room temperature would go back to normal.

Answer 10

It would only work if the compressor and condensor coils were located outside the room, in which case it would be essentially an air conditioner.