Can a refrigerator cool a room by keeping its door open?

Answer 1

No. In fact it will heat the room up.

Whatever is "cold" inside the box of the 'fridge' is "hot" on the coils in the back of the fridge. There is more energy applied (the compressor motor) to force heat out of the "cold" area and put it into the cooling coils in the back of the fridge.

Whatever you might feel as cold in the front, it's that much hotter in the back.

Try it yourself -- the next time you hear the fridge motor running, wait about 2 minutes and reach around the back side and touch the black wires. They will be HOT! and they heat the room!

Answer 2

If the refriferator became into operative with closed doorways for it sluggish after which you open doorways, the room would be truthfully somewhat cooler than in the past, a minimum of for an hour or so. How lots and espresso long is a few thing i can not say. some basic maths ought to help; it may be some thing like this: the quantity of air, say, two hundred liters that's at, ~5 degree C in the refrigerator vs. ~10000 liters of room-air at ~28 degree C. From what pearlsawme says, and others agree, the room would incredibly warmth up in the long-term. rationalization from this 'non-thermodynamics' individual: Compressor of the refrigerator is designed to relax a particular volume interior the closed chamber. Compressor generates warmth that's released in the room. So, the room heats to a pair volume jointly as the interior refrigerator cools as long the door is closed. while the door of the refrigerator is open, each little thing else maintains to be same different than that the temperature interior the room and refrigerator has a tendency to prevail in equilibrium. So the room cools down somewhat, initially. however the compressor has to paintings continuosly (while temperature is low adequate, the compressor's action is often halted for it sluggish -top?) and this suggests warmth generated for an prolonged time too! i do no longer know how long it is going to save functioning and how lots greater warmth it is going to generate. it may be a desirable test for somebody who could have the money for to loose a pair of fridges and purchase some thermometers!

Answer 3

The following is a very basic explanation of the workings of a fridge.

In a fridge, a low boiling point refrigerant gas (used to be Freon), is compressed by the compressor.
The high pressure gas is cooled and condensed by the kitchen ambient temperature in the coils, (not black wires), at the back of the fridge to give a high pressure liquid refrigerant. (The cooling and condensation of the refrigerant will increase the kitchen temperature somewhat)

The high pressure liquid refrigerant is then expanded to low pressure by a special valve and the resultant partial vaporisation of the refrigerant causes a considerable drop in its temperature to near its normal boiling point. The cold vapour/liquid mixture passes through the coils of the cold box in the fridge and heat is removed from the fridge interior and its contents.

When the inside of the fridge reaches the thermostat set temperature, the system shuts down.

The process of heat exchange in the fridge re-vaporises all of the liquid refrigerant and the low pressure, warmer vapour is returned to the compressor to begin the cycle again.

By leaving the door open, the refrigeration system cannot possibly cope with the huge amount of heat energy involved in trying to cool the kitchen. The system would overload, overheat and suffer major problems.

(A fridge system only becomes a heat pump in a larger system (not normally in the home), when the condenser and expansion valve are bypassed and the heat of compression of the refrigerant is used in the winter to heat the building via the air mover fan .. which is also used to circulate the cold air in summer.)

Answer 4

No.
To simply put it the "coolness" generated by the refrigerant inside the refrigerator will be balanced by the "heat" extracted from the refrigerant outside. But to do the above work the heat generated by the compressor will only add up to room temperature and effectively increase the room temp.

Answer 5

A refrigerator is a heat pump. It does not "make cold" it simply pumps heat.

To make a long explanation short, cold comes out of the front of a fridge, because heat is being pumped out the back. In order to cool the room, you would have to hang the back (or the bottom of some models) of the fridge out the window so that you heat the outdoors by cooling he room. Otherwise, you are simply moving heat from the inside of the fridge to the back of the fridge, which accomplishes nothing because the hot and cold air will remix inside the room, and the overall temperature of the room should stay the same, or become slightly hotter because of the mixing.

Answer 6

No. Refrigerators and air conditioners don't actually take heat out of the air. They simply relocate it. With an air conditioner it relocates the heat outside your house. With a refrigerator it relocates the heat outside of the refrigerator and into the room. So if you open the door to the refrigerator and leave it open you will actually warm up the room since you are only transfering the heat from one place to another and using a compressor to do this which creates heat.

Answer 7

No! A refrigerator is a heat pump which moves heat from its evaporator (inside) to its condenser (outside). The condenser could be mounted on top (antique), on the back, or on the bottom (newer, with a fan). All the heat removed from inside the box is thus exhausted right back into the room. Furthermore, the electric motor which runs the pump makes its own heat, which is also dissipated by the external condenser.

So, with the door open, the heat absorbed by the evaporator is returned right back to the room by the evaporator, along with the extra heat lost by the electric motor. Net result -- the room becomes warmer, not colder.

Answer 8

There are two vessels connected by a pipe.

The level of liquid in both vessels will be the same if the pipe is open.

If you pour liquid from one vessel and add it to the other vessel keeping the pipe open, then the level of water in both will be the same irrespective of number of times you repeat pouring and adding.

Same with the refrigerator and room.

If you keep open the door, the temperature will remain the same.

But you are wasting your energy in pouring the heat from the fridge and adding it to the room. Soon the level ( temperature ) will be the same.

Answer 9

No, it can't cool the room.. On the contrary it will heat the room by keeping its door open..

Answer 10

no, it actually heats up the room with or without the door being open.