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How Does Refrigerator Works?
The simple principle on how does a refrigerator is the Gases get hotter when you compress them into less volume because you have to push their energetic molecules together. When you expand a gas, it is suddenly able to occupy much more volume.
The heat energy its molecules contain is now divided over a much bigger volume of space, so the temperature of the gas falls (it gets cooler).
The other principle at work in a refrigerator is that when you have two things that are different temperatures that touch or are near each other, the hotter surface cools and the colder surface warms up. This is a law of physics called the Second Law of Thermodynamics.
Tetrafluoroethan gas which is the mixture of hydrogen, fluorine and carbon is used in the mechanical compressor and gets pushes out due to high pressure and passes through metal coil, dissipate heat into air and reaches to expansion valve and gets cool, later it enters into evaporator coils, these coils absorbs heat and keeps the refrigerator cool, the gas in the evaporator coil forms into liquid and again enters into compressor..
This is the vapour compression cycle of a refrigerator.
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Why do medical emblems often depict a snake or serpent?
The two snakes wrapped around a winged staff
According greek mythology a snake as magical benevolent creature able to cure patients just by touch ..!
In Greek mythology, Hermes was a messenger between the gods and humans (which explains the wings) and a guide to the underworld (which explains the staff). The Greeks regarded snakes as sacred and used them in healing rituals to honor.
Snake venom is also used to prepare medicine.
ЁЯТБЁЯП╗тАНтЩВя╕П GK TODAY
Normal temperature of human body: *36.5тАУ37.5 ┬░C (97.7тАУ99.5 ┬░F)*
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Ch. Naveen Kumar |
