ASHRAE 63.1

Abstract

This standard applies only to those driers that employ a desiccant. <br>A desiccant's performance varies with respect to its activation. The water capacity test method prescribed in this standard can be used to test a drier either "as received" or after being reactivated in accordance with the manufacturer's recommendations. <br>This standard applies only to liquid line driers for use in systems employing halocarbon refrigerants that have an atmospheric boiling point below 20&#176;C (68&#176;F). <br>This standard does not attempt to reflect the complete performance of a drier. Specifically, the following topics are not considered: <br>a. the physical characteristics of the desiccants, <br>b. the chemical characteristics of the desiccants, <br>c. the mechanism of water adsorption, <br>d. the filtration ability of a drier, <br>e. the acid adsorption of a drier, <br>f. the performance of a drier in other than a liquid line, <br>g. the speed of drying, h. the drier water capacity needed in relation to the size of a system, potential freeze-up problems, or potential chemical activity problems, or <br>i. the effect of oil on a drier's performance. <br>This standard defines methods of testing but does not specify the standard rating conditions for temperature, equilibrium point dryness, pressure drop, etc. ARI Standard 7107 is suggested as a reference for these values. <br><strong>PURPOSE</strong> <br>The purpose of this standard is to prescribe test methods for determining flow capacity and water capacity performance characteristics of liquid line refrigerant driers.