1、 2014 Standard for Performance Rating of Liquid Line Filters AHRI Standard 716 (SI) Price $15.00 (M) $30.00 (NM) Copyright 2014, by Air-Conditioning, Heating, and Refrigeration Institute Printed in U.S.A. Registered United States Patent and Trademark Office IMPORTANT SAFETY DISCLAIMER AHRI does not
2、set safety standards and does not certify or guarantee the safety of any products, components or systems designed, tested, rated, installed or operated in accordance with this standard/guideline. It is strongly recommended that products be designed, constructed, assembled, installed and operated in
3、accordance with nationally recognized safety standards and code requirements appropriate for products covered by this standard/guideline. AHRI uses its best efforts to develop standards/guidelines employing state-of-the-art and accepted industry practices. AHRI does not certify or guarantee that any
4、 tests conducted under the standards/guidelines will not be non-hazardous or free from risk. Note: For IP ratings, see AHRI Standard 715 (I-P)-2014. TABLE OF CONTENTS SECTION PAGE Section 1. Purpose 1 Section 2. Scope .1 Section 3. Definitions.1 Section 4. Tubing Connections 2 Section 5. Test Requir
5、ements 2 Section 6. Rating Requirements .3 Section 7. Minimum Data Requirements for Published Ratings .4 Section 8. Marking and Nameplate Data .4 Section 9. Conformance Conditions 4 TABLES Table 1. Standard Rating Conditions 2 FIGURES Figure 1. Pressure Drop vs. Contaminant Added .3 APPENDICES Appen
6、dix A. References - Normative .5 Appendix B. References - Informative5 _AHRI STANDARD 716 (SI)-2014 1 PERFORMANCE RATING OF LIQUID LINE FILTERS Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establish for Liquid Line Filters: definitions; tubing connections; test requirements; ra
7、ting requirements; minimum data requirements for Published Ratings; marking and nameplate data; and conformance conditions. 1.1.1 Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and users. 1.1.2 Review and Amendment. Thi
8、s standard is subject to review and amendment as technology advances. Section 2. Scope 2.1 Scope. This standard applies to hermetic Liquid Line Filters designed for use in the liquid line of all types of refrigeration and air-conditioning systems employing the following refrigerants: R-22, R-134a, R
9、-290, R-404A, R-407A, R-407C, R-410A, R-507A, R-600a, and R-744 as defined in ANSI/ASHRAE 34 with Addenda. This standard provides a means of determining the Overall Filter Efficiency and Contaminant Capacity of a Liquid Line Filter at specified conditions. 2.2 Exclusions. This standard does not appl
10、y to filters used in the suction line or low pressure side of refrigeration and air-conditioning systems. 2.3 Limitations. This standard only addresses the removal and retention of solid particles. Therefore, acid, dissolved contaminant, and moisture removal are not considered here. Although many co
11、mmercial Liquid Line Filter Driers have moisture removal and retention media, the subject of moisture removal is separate and distinct from the considerations of this standard. The rating standard for moisture removal performance of liquid line driers is ANSI/AHRI Standard 711 (SI). Section 3. Defin
12、itions All terms in this document will follow the standard industry definitions in the ASHRAE Wikipedia website (http:/wiki.ashrae.org/index.php/ASHRAEwiki) unless otherwise defined in this section. 3.1 Contaminant Capacity (Mc). The mass of test contaminant that is retained by the Filter Under Test
13、, grams. 3.2 Contaminant Loading (Mt). The mass of test contaminant that is added to the test apparatus, grams. 3.3 Filter Under Test. The Liquid Line Filter that is under evaluation. 3.4 Liquid Line Filter. A device installed in the liquid line for removing and retaining solid contaminants from a r
14、efrigeration system. For the purpose of this standard, the term “Liquid Line Filters” includes Liquid Line Filter Driers. 3.4.1 Liquid Line Filter Drier. A filter containing a desiccant capable of removing moisture and other dissolved contaminants in the refrigeration system. 3.5 Overall Filter Effi
15、ciency (Ef). The ratio of Contaminant Capacity to the Contaminant Loading, expressed as a percent. 3.6 Pressure Drop. The pressure difference between the inlet and the outlet of a Liquid Line Filter, including its connections. 3.6.1 End-point Pressure Drop. The specified Pressure Drop for the rated
16、filter at which the Contaminant Loading is determined. AHRI STANDARD 716 (SI)-2014 2 3.7 Published Rating. A statement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a Liquid Line Filter may be chosen to fit its application. These values apply t
17、o all Liquid Line Filters of like nominal size and type (identification) produced by the same manufacturer. The term Published Rating includes the rating of all performance characteristics shown on the component or published in specifications, advertising or other literature controlled by the manufa
18、cturer, at stated Rating Conditions. 3.7.1 Application Rating. A rating based on tests performed at Application Rating Conditions (other than Standard Rating Conditions). 3.7.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.8 Rating Conditions. Any set of operati
19、ng conditions under which a single level of performance results and which causes only that level of performance to occur. 3.8.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for performance characteristics. 3.9 “Shall“ or “Should“. “Shall“ or “should“ shall be interpr
20、eted as follows: 3.9.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.9.2 Should. “Should“ is used to indicate provisions which are not mandatory but which are desirable as good practice. 3.10 Temperatu
21、re. The temperature of the liquid refrigerant passing through the Liquid Line Filter. 3.11 Test Flow Rate. The mass flow rate of clean test fluid that is specified for the Filter Under Test. Section 4. Tubing Connections 4.1 Tubing Connections. Dimensional specifications for sweat connections of Liq
22、uid Line Filters shall be in accordance with ANSI/ASME Standard B16.22. Section 5. Test Requirements 5.1 Testing Procedure. Liquid Line Filter ratings shall be based on tests conducted in accordance with the procedure outlined in ANSI/ASHRAE Standard 63.2. Table 1. Standard Rating Conditions Nominal
23、 Hermetic Filter Size Nominal Connection Size Flow Rate End-point Pressure Drop in3mm g/s kPa APPENDIX B. REFERENCES - INFORMATIVE B1 Listed here are standards, handbooks and other publications which may provide useful information and background but are not considered essential. References in this appendix are not considered part of the standard. B1.2 Lord, E., “The Use of Range in Place of Standard Deviation in the t-Test“ Biometrika, p. 41, 1947. B1.3 Proschan and Babcock, “How to Use Short-Cut Statistics“ Chemical Engineering, September 1954.
