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When a household refrigerant compressor doesn't run it is recommended that low and high side access valves be installed when recovering refrigerant from the system because of?
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When a household refrigerator compressor does not run it is recommended that low and high side access valves be installed when recovering refrigerant from the system because?
The last thing you want to do is tap into a closed system, this is the beginning of the end in most cases. If a unit is damaged, the refrigerant will be gone anyways. A refrigerator holds 4 oz. to 5 oz. refrigerant, it takes a tiny leak to deplete it entirely. Should you need to pump a system down then you can install a tap temporarily and sil floss in a proper suction line access, the high side is optional.
What is the most common refrigerant in household refrigerators?
R12
Which of the following cools the air in a household refrigerator?
The compressor is the part of a household refrigerator that cools the air. The function is absorption but the compressor creates the absorption.
What cools the air inside a household refrigerator?
Absorption of the heat from the air due to evaporation of the liquid refrigerant.
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What is the direct expansion valveand how does it work in the system what are the different between the direct expansion valve and the indirect expansion valve?
A direct expansion valve, sometimes called a DX valve, modulates the amount of refrigerant fluid, entering as a liquid, allowed into a heat exchanger. Past the DX valve the pressure is much lower and a warmer fluid on the other side of the piping in a heat exchanger boils the refrigerant fluid into its gas, absorbing heat and cooling the warmer fluid. Most commonly one sees this on a household air conditioning system where the warmer fluid being cooled is air from the house, which will then be sent back into the house to cool it. The DX valve modulates the amount of liquid refrigerant let in to cool the air and assure that the refrigerant is all boiled off by the time it leaves the cooling coil. If it were not all boiled into a gas, liquid could reach the refrigerant compressor, the next step in the refrigerant gasses circulation loop. Liquid is very difficult to compress and it would (and sometimes does) break the compressor when either the DX valve has not worked correctly or there has been some other technical malfunction. There is no "indirect expansion valve" to contrast to the direct one. Instead the "direct" adjective distinguishes the direct cooling of the air by the expanding, boiling refrigerant from the more typical secondary fluid, usually water, used in larger systems to cool the air indirectly. "Indirectly" because water is not the primary source of cooling, the boiling refrigerant is; it cooled the water first.
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