what is the condencing cycle of refrigeration or cooling?

Answer 1

Click on this link.It gives you all the details

http://frontier-power.apogee.net/geo/gdfrref.asp

Answer 2

So one of the things you can draw from ideal gas law PV=NRT is that

In an adiabatic expansion, as volume increases, pressure and temperature will decrease; and also vice versa.

This means that when you compress air, it will get hotter, and when you let the pressure drop, it will cool.

What is gas (used to be freon, now its some fancy new compound that doesn't deplete the ozone) is compressed in a refrigerator (or car's AC), and that causes it to heat up. Then it goes through a radiator and gives off most of the heat to the outside environment (that's why car engines run hotter with AC on, and why the bottom of most fridges are warm). Then that cooler compressed gas is allowed to expand, which suddenly cools it much more.

Since the gas was already near room temperature when it was compressed, it can cool below room temperature (and in the case of fridges, down to freezing).

The "condensing cycle" is most likely used to mean the process of compression AND cooling the original gas, making it denser while having roughly the same original temperature, rather than just squishing it but heating it.

Answer 3

ymingy is correct as far as he goes but he is missing the main factor in a refrigeration system

it is not the gas compression that provides most of the heat removal capacity, it is the latent heat of the refrigerant (freon or whatever you want to call it)

the freon actually boils at the "evaporator" which is usually in your house or car and is the place where the air is cooled

this boiling freon can remove lots of heat because lots of energy is needed to change the state from liquid to gas, since the freon boils at 50 degrees F (or near their for a home air conditioner, lower of course for a fridge) it can cool the air down to nearly that temperature

now the freon is a gas and it goes around to the compressor where it is pressurized (making it hot like ymingy said) and then passed through an exchanger where outside air is used to cool the hot freon down (heating the outside air up), the freon gets cool enough to condense back to a liquid at its current high pressure, hense the "condensing cycle"

now the liquid goes back to the evaporator where the pressure is let off, and the liquid boils (just like butane in a butane lighter, take the pressure off and it boils) pulling the heat out of the house/car/whatever air and then cycling around to dump that heat into the outside air

thats why refrigeration cycle devices are sometimes called "heat pumps", it is a tricky way to pump heat from a cooler place (the house or whatever) to a hotter place (the outdoors)

heat will not flow from the cool place to the hot place without applying energy and being tricky