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ASHRAE STD 99

2006 Edition, January 21, 2006

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Refrigeration Oil Description

Includes all amendments and changes through Change/Amendment , January 21, 2006


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Description / Abstract:

Application. This standard applies to both synthetic and petroleum-derived lubricants used or proposed as compressor lubricants in refrigeration systems.

Test Methods. This standard provides recognized test methods to

a. describe a specific class of refrigeration lubricant without the use of commercial designations,

b. describe the molecular structure for various classes of refrigeration lubricants, and

c. define the critical properties needed to describe a refrigeration lubricant using recognized test procedures.

Limits. This standard is not intended to define refrigeration oil quality through the establishment of test specifications or requirements. In addition, performance tests intended to measure quality have been excluded from this standard.

PURPOSE

The purpose of this standard is to describe lubricants used in refrigerating and air-conditioning systems based on molecular structure, physical properties, and chemical properties. Since the properties of generically similar lubricants can vary significantly depending on source of formulation, terms such as "refrigeration lubricant" have little meaning in defining such materials. This standard defines those properties critical to the precise identification of synthetic as well as petroleumbased lubricants, along with recognized test procedures for the determination of these properties.
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