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What is gases use in refrigerator for cooling?
Gases in a refrigerator are used to transfer heat from the inside to the outside of the refrigerator. When the gas is compressed, it becomes hot, and when it expands, it cools down. This process allows the gas to absorb heat from inside the refrigerator, keeping the contents cool.
Why was the refrigerator invented?
To keep things cold. Before they invented refrigerators, they used cellars to cool things. A cellar is underground and is made from rocks, so it was cooler. And so our food stays edible!
What things CFC's are used in?
Old refrigerator's, car air conditioning, basically anything that needs to keep cool, CFC's are very toxic don't mess around with anything that uses them.
Why is it unwise to try to cool a room by opening the door of the refrigerator?
To operate the refrigerator, requires a lot of energy. When the refrigerator is running, some of that energy is used to cool the interior (about 80% of said energy.) But this is not "making cold." A refrigerator cools by moving heat from inside it, to the outside. This heat is dissipated into the room by the cooling fins on the rear. The whole process happens silently and slowly, and we never notice it. So even though the inside of the refrigerator may be cold, the process of making it cold warmed up the entire room, plus 20% (the energy wasted in the conversion process.) Thus, opening the door to cool the room will never work, because the refrigerator cannot make cold, it can only move heat around. And in doing so, it itself always dissipates 20% more than the energy moved, which ultimately ends up as heat, further heating up the room. Ironically, the room would be cooler without the refrigerator in it.
Whoinvent invented the refrigerator?
The refrigerator was invented by Oliver Evans in 1805. He designed the first refrigeration machine that used vapor instead of liquid to cool.
What type of energy is used to run a refrigerator?
Electricity is the primary source of energy used to run a refrigerator. The electricity powers the compressor, which circulates refrigerant through the coils to cool the inside of the fridge.
How does a heat mover absorb heat from cold air?
A good example of this process is a refrigerator. Electricity is used to power the refrigerator to keep it cool. The room that the fridge is in is warmer. Normally the warm air from the room should flow into the refrigerator until they are the same temperature. The heat mover, which is the refrigerator in this case, absorbs the heat the cooler air absorbs, and moves it back into the room. This keeps the fridge at a constant temperature.
How does a heat mover absorbs heat from cold air?
A good example of this process is a refrigerator. Electricity is used to power the refrigerator to keep it cool. The room that the fridge is in is warmer. Normally the warm air from the room should flow into the refrigerator until they are the same temperature. The heat mover, which is the refrigerator in this case, absorbs the heat the cooler air absorbs, and moves it back into the room. This keeps the fridge at a constant temperature.
What is the meaning of the root word frig?
The root word "frig" relates to cold or freezing temperatures. It is often used in words like refrigerator or frigid to describe things related to coldness.
What type of refrigerant is used in the refrigerator to keep the food items cool?
The refrigerant used in refrigerators to keep food items cool is typically a chemical compound called HFC-134a.
What has more oxygen a oven or a refrigerator?
A refrigerator because it uses cooler air. The reason an oven isn't, is because the generator in a pven has gases & can not be used for oxygen. A refrigerator can because it uses air to keep food cool...
What is the purpose of refrigerants in a refrigerator?
Refrigerants are substances that maintain a cool temperature and circulate cool air. These substances are used in refrigerators and other cooling systems, as well as in home and automobile air conditioning and heating systems. Your refrigerator must have an adequate level of refrigerant to maintain the temperature needed to keep fresh foods cool and freezer items frozen.#chariechixx^^
