ANSI ASHRAE Addendum g to ANSI ASHRAE Standard 52 2 2012

Ansi Ashrae Addendum G To Ansi Ashrae Standard 52 2 2012-Free PDF

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ASHRAE www ashrae org For personal use only Additional reproduction distribution. or transmission in either print or digital form is not permitted without ASHRAE s prior written permission. ASHRAE Standing Standard Project Committee 52 2, Cognizant TC 2 4 Particulate Air Contaminants and Particulate Removal Equipment. SPLS Liaison Rita M Harrold, Michael D Corbat Chair Zied Driss Bruce N McDonald. Kathleen Owen Vice Chair Chris Fischer Stephen W Nicholas. Todd A McGrath Secretary Thomas A Justice John S Robertson. Richard K Chesson Jr Carolyn M L Kerr Christine Q Sun. Kyung Ju Choi David Matier Paolo M Tronville,David B Christopher Phil Maybee Alan C Veeck. Denotes members of voting status when the document was approved for publication. ASHRAE STANDARDS COMMITTEE 2016 2017, Rita M Harrold Chair Julie M Ferguson Cyrus H Nasseri. Steven J Emmerich Vice Chair Michael W Gallagher David Robin. James D Aswegan Walter T Grondzik Peter Simmonds,Niels Bidstrup Vinod P Gupta Dennis A Stanke.
Donald M Brundage Susanna S Hanson Wayne H Stoppelmoor Jr. Waller S Clements Roger L Hedrick Jack H Zarour, Drury B Crawley Rick M Heiden William F Walter BOD ExO. John F Dunlap Srinivas Katipamula Patricia Graef CO. James W Earley Jr Arsen K Melikov,Keith I Emerson R Lee Millies Jr. Stephanie C Reiniche Senior Manager of Standards,SPECIAL NOTE. This American National Standard ANS is a national voluntary consensus standard developed under the auspices of ASHRAE Consensus is defined. by the American National Standards Institute ANSI of which ASHRAE is a member and which has approved this standard as an ANS as substantial. agreement reached by directly and materially affected interest categories This signifies the concurrence of more than a simple majority but not necessarily. unanimity Consensus requires that all views and objections be considered and that an effort be made toward their resolution Compliance with this. standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation. ASHRAE obtains consensus through participation of its national and international members associated societies and public review. ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard The Project Committee. Chair and Vice Chair must be members of ASHRAE while other committee members may or may not be ASHRAE members all must be technically. qualified in the subject area of the Standard Every effort is made to balance the concerned interests on all Project Committees. The Manager of Standards of ASHRAE should be contacted for. a interpretation of the contents of this Standard, b participation in the next review of the Standard. c offering constructive criticism for improving the Standard or. d permission to reprint portions of the Standard,DISCLAIMER.
ASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information and accepted. industry practices However ASHRAE does not guarantee certify or assure the safety or performance of any products components or systems tested. installed or operated in accordance with ASHRAE s Standards or Guidelines or that any tests conducted under its Standards or Guidelines will be. nonhazardous or free from risk,ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS. ASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes by. suggesting safe practices in designing and installing equipment by providing proper definitions of this equipment and by providing other information that. may serve to guide the industry The creation of ASHRAE Standards and Guidelines is determined by the need for them and conformance to them is. completely voluntary, In referring to this Standard or Guideline and in marking of equipment and in advertising no claim shall be made either stated or implied that the. product has been approved by ASHRAE, ASHRAE is a registered trademark of the American Society of Heating Refrigerating and Air Conditioning Engineers Inc. ANSI is a registered trademark of the American National Standards Institute. ASHRAE www ashrae org For personal use only Additional reproduction distribution. or transmission in either print or digital form is not permitted without ASHRAE s prior written permission. This foreword is not part of this standard It is merely dust holding capacity final filter DHCFF the total weight. informative and does not contain requirements necessary of the synthetic loading dust captured by the second in series. for conformance to the standard It has not been pro air cleaning device over the dust loading steps until the final. cessed according to the ANSI requirements for a standard filter reaches it predetermined final resistance. and may contain material that has not been subject to. dust holding capacity prefilter 1 DHCPF1 the total. public review or a consensus process Unresolved objec. weight of the synthetic loading dust captured by the first in. tors on informative material are not offered the right to. series air cleaning device over the dust loading steps until the. appeal at ASHRAE or ANSI, prefilter reaches its predetermined final resistance Each addi. tional prefilter designation would be the next incremental. numerical digit i e DHCPF2 DHCPF3, Due to the frequent practice of prefiltering filters are often.
used in two stage systems Because the first filter removes final filter the second filter in the two stage system. some of the particles from the airstream the downstream fil prefilter the first filter in the two stage system. ter sees fewer large particles and a greater percentage of. total system dust holding capacity TDHC the sum total. smaller particles This results in a different performance for. weight of the synthetic loading of all prefilters and the final. the downstream final filter than would be expected based on. loading with the same dust as the prefilter Thus an optional. test method has been developed to allow standard testing for. K3 SUBSECTION TO BE USED WITH,two stage systems,SECTION 7 2 PREPARATION OF THE SAMPLES. Note In this addendum changes to the current standard. are indicated in the text by underlining for additions and K3 1 The devices shall be installed in the duct with a space. strikethrough for deletions unless the instructions specifi between the filters of 203 to 914 mm 8 to 36 in. cally mention some other means of indicating the changes K3 2 Distance between devices should be documented in the. test report,Addendum g to Standard 52 2 2012,K4 SUBSECTION TO BE USED WITH. Add new Informative Appendix K SECTION 8 2 TEST PROCEDURES. INFORMATIVE APPENDIX K K4 1 Test Sequence The sequence of tests on the two stage. system shall be as follows,OPTIONAL METHOD OF TESTING. TWO AIR FILTERS ARRANGED IN SERIES IN A a Resistance vs airflow rate of the prefilter at various air. SYSTEM TO EVALUATE PARTICLE REMOVAL flow rates as prescribed in Section 9. DUST LOADING AND PRESSURE DROP INCREASE b Resistance vs airflow rate of the final filter at various air. THAT MIGHT BE REALIZED IN flow rates as prescribed in Section 9. FIELD APPLICATIONS c PSE prescribed in Section 10 7 1 2 b to be replaced with. the following The prefilter after an initial conditioning. K1 PURPOSE OF OPTIONAL TEST step with a dust loading of 30 g or an increase of 10 Pa. This appendix is to be used to evaluate the performance of 0 04 in of water pressure drop across the prefilter. two air cleaning devices arranged in airflow series In this whichever comes first. appendix the first filter serves as a prefilter and the second fil d PSE prescribed in Section 10 7 1 2 c to be replaced with. ter serves as the final filter It is possible for both filters to be the following After the dust loading increments have. the same filter The test protocol is based on ASHRAE Stan achieved an airflow resistance increase of one quarter. dard 52 2 Equipment and procedures specified in Standard one half and three quarters of the difference between the. 52 2 are used to conduct this test beginning and the prescribed end point limit of airflow. This procedure measures the ability of the prefilter and resistance for the final filter. final filter to remove dust as the filters become loaded with a e PSE prescribed in Section 10 7 1 2 d to be replaced with. standardized loading dust The loading dust is fed at intervals the following After the dust increment that loads the final. to simulate accumulation of particles during filter service life filter to its prescribed end point resistance limit. Resistances of the individual filters are monitored separately. The prefilter is replaced with a new prefilter whenever its pre K5 SUBSECTION TO BE USED WITH. selected final resistance is reached This process is continued SECTION 9 MEASUREMENT OF RESISTANCE. until the preselected resistance of the final filter is reached VERSUS AIRFLOW. After the initial particle size efficiency PSE test the resis. K5 1 Measure record and report the resistance of the prefil. tance of the final filter is used to position the five additional. ter the final filter and the system at a minimum of four air. PSE tests flow rates 50 75 100 and 125 of test airflow rate. Resistance shall be measured between the static taps. K2 DEFINITIONS AND ACRONYMS, K2 1 Definitions to be used in addition to those listed in Sec K6 SUBSECTION TO BE USED WITH. tion 3 of Standard 52 2 are as follows SECTION 10 7 2 DUST LOADING PROCEDURES. ANSI ASHRAE Addendum g to ANSI ASHRAE Standard 52 2 2012 1. ASHRAE www ashrae org For personal use only Additional reproduction distribution. or transmission in either print or digital form is not permitted without ASHRAE s prior written permission. K6 1 When the prefilter reaches its prescribed final resis ii Effective media area. tance it shall be replaced by a clean prefilter The replace iii Type and amount of dust adhesive if known. ment filter shall be identical to the one being replaced iv Electrostatic charge if known. K6 2 Repeat the prefilter replacement process until the final 5 Any other pertinent descriptive attributes. filter reaches its final resistance h Operating data as stated by the manufacturer. K6 3 Weigh each prefilter to the nearest 0 1 g before and 1 Test conditions for reporting purposes airflow rate. after use to determine dust weight gain DWG,2 Final resistances for both air cleaners.
K6 4 Weigh final filter to the nearest 0 1 g before and after. use to determine dust weight gain DWG 3 Any other operating data furnished. i Test data, K7 SUBSECTION TO BE USED WITH 1 Test air temperature and relative humidity. SECTION 10 8 REPORTING RESULTS OF 2 Airflow rate,LOADING TESTS. 3 Type of test aerosol, K7 1 Results of loading tests shall be reported in the form of 4 Distance between the two filters from back edge of. PSE curves for the two stage system prefilter to front edge of final filter. a clean j Results of resistance testing, b after each incremental dust loading of the final filter a 1 Initial resistance of prefilter. total of four curves and 2 Initial resistance of final filter. c at final filters final loading point,3 Initial resistance of system.
K8 SUBSECTION TO BE USED WITH 4 Final resistance of system. SECTION 11 REPORTING RESULTS 5 Number of times the prefilter is changed. K8 1 The summary section of the performance report shall k Performance curves. include the following information 1 A curve in Figure 11 1b format of the prefilter final. filter and system resistance when clean vs airflow. a Name and location of the test laboratory,rates from 50 to 125 of test flow. b Date of the test, c Test operator s names 2 A curve in Figure 11 1c format of PSE for the clean. d Brand and model number of the particle counting and siz system and for the system at each of the five loading. ing devices stages of the final filter, e Air cleaner manufacturer s name or name of the market 3 A minimum PSE composite curve in Figure 11 1c for. ing organization if different from the manufacturer mat whose data points are the lowest PSEs from the. f How the sample was obtained six measurements in each particle size range from the. g Description of each test air cleaner including the following curves of test results for the system. 1 Brand and model number 4 Resistance vs synthetic loading dust fed during the. 2 Physical description of construction e g extended entire test sequence for prefilter final filter and system. surface number of pockets or number of pleats l Average ASHRAE dust arrestance. pleated panel number and depth of pleats m Dust holding capacity DHC. 3 Face dimensions and depth 1 A DHC for each prefilter. 4 For fiber media air cleaners 2 A DHC for the final filter. i Type and color of media 3 A DHC for the entire test cycle. 2 ANSI ASHRAE Addendum g to ANSI ASHRAE Standard 52 2 2012. ASHRAE www ashrae org For personal use only Additional reproduction distribution. or transmission in either print or digital form is not permitted without ASHRAE s prior written permission. POLICY STATEMENT DEFINING ASHRAE S CONCERN,FOR THE ENVIRONMENTAL IMPACT OF ITS ACTIVITIES. ASHRAE is concerned with the impact of its members activities on both the indoor and outdoor environment ASHRAE s members. will strive to minimize any possible deleterious effect on the indoor and outdoor environmen. ANSI ASHRAE Addendum g to ANSI ASHRAE Standard 52 2 2012 1 This foreword is not part of this standard It is merely informative and does not contain requirements necessary

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