That is the most common figure that I have seen bantered about.Īll right. So, real world difference is probably around 66% (or more if the evaporator or condenser was under sized) of original capacity. Lower compression ratio, and higher suction pressure. (They will be closer to the temp of the medium that it is cooling, or the medium that is cooling it.) So there will be a lower temperature separation that it has to move heat across. That figure closely matches the stated figure in my other books.įor switching a complete system from R22 to R12 (or a R12 system running at reduced capacity with a R22 compressor) the delta T of the evaporator, and the condenser will be less with a reduced capacity. Or a little more than 62% of R22 capacity.Ĭompression ratios are about the same so head space shouldn’t affect the suction CFM levels any from the switch from R22 to R12.Ī R22 compressor for the exact same application and capacity has a displacement value of about 62% of it’s R12 counterpart. 94 pounds per hour at 1.1 cubic foot per pound. You take that exact same compressor and put R12 in it. Circulated refrigerant is around 110 pound per hour.
A 10,000BTU R22 compressor pulling a 20F evaporator. So if you do not change the refrigerant to R22, and the refrigerant specific components such as the TEV, you will not come close to cooling compared to the semi-hermetic compressor. This does not work for refrigeration or comparison to different refrigerants. The rule to remember is.Never compare motor size for compressor capacity. In other words, if a 1 HP compressor designed for R-12 is replaced by a 1 HP compressor designed for R-22 you will be sorely disappointed in the outcome.
#R22 compressor 4 ton plus#
If another compressor has "x" plus or "x" minus displacement the system responds by having either a lower suction pressure or higher suction pressure (respective to the "x" plus or "x" minus). If one compressor will pump "x" cubic feet (or meters) per minute that is it's useful displacement.
The volume volume flow is particularly important when comparing compressor capacity.
Horsepower or input kW should not be used to compare compressor capacity.įor the same reason 1 Ton (or 1 kW of cooling) at one temperature is not the same capacity at another temperature as far as the compressor is concerned.Ĭompounding this is the proposed change in refrigerants.Įach refrigerant will require a specific mass and volume flow to produce a specific cooling effect. Special base rails elevate the bottom of the unit off the ground and away from corrosive condensation.The combination of the durable cabinet, large outdoor fan, scroll compressor and elevated base pan all contribute to quiet, reliable operation.Dan provides a good explanation on a simple but often overlooked principle. The heart of your Package Heat Pump is the compressor.That’s why every Rheem unit features a Scroll® Compressor – widely recognized as the industry standard for performance and durability. Our motor mount prevents damage to your fan motor, extending its service life.Įach unit features full-louvered protection of the sensitive condenser coil, which keeps damage caused by accidental contact to a minimum, and adds to the longevity of your unit. Four service panels provide your technician easy access to all internal components. Service time and expense are kept to an absolute minimum. Installs with a flush fit against your home. Our slim design occupies less room in your yard and
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