Re: [T3] Modern a/c - compressor nomenclature

["Shad Laws" <shad@lnengineering.com>]

<x-charset iso-8859-1>Hello-

BTW, a few words on Sanden compressor nomenclature.

There are two "main" different things to keep in mind.  The first is 
the number of pistons (5 or 7) and the second is the displacement of 
the unit.  7 is more *efficient* than 5, but also pricier.  Big 
displacements move more freon and so cool better, but also may use a 
little more power and are bigger to fit into a cramped engine bay.

The old style of nomenclature is a three-digit number.  The five-piston 
units were SD505, SD507, SD508, and SD510.  The 5, 7, 8, and 10 is the 
displacement in cubic inches.  Seven-piston units begin with a 7 rather 
than a 5.

The new style of nomenclature is different.  For the five-piston units, 
we have things like SD5HD14.  The 5 is the five-piston bit, and the 14 
is the displacement in tens of cubic centimeters.  IOW, a 508 (~8 ci) 
is a 5HD14 (~140 cc).

Take care,
Shad Laws
LN Engineering
http://www.LNengineering.com

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