1、Page 1 of 2 2013 ASHRAE. All rights reserved. ERRATA SHEET FOR ANSI/ASHRAE STANDARD 145.2-2011 Laboratory Test Method for Assessing the Performance of Gas-Phase Air-Cleaning Systems: Air-Cleaning Devices October 29, 2013 The corrections listed in this errata sheet apply to ANSI/ASHRAE Standard 145.2
2、-2011. The first printing is identified on the outside back cover as “Product code: 86477 8/11”. Shaded item has been added since the previously published errata sheet dated August 25, 2011 was distributed. Page Erratum 18 Table 6.1.4.1 Standard Test Challenge Gases. In Table 6.1.4.1, in the column
3、titled “Required Chemical”, replace the symbol “” with a check box “” indicating that compund is the required chemical. See excerpt from table attached. The remainder of Table 6.1.4.1 is unchanged. 21 10.6 Standard Capacity Test Penetration, Pt(%). Replace Section 10.6 with the following: 10.6 Stand
4、ard Capacity Test Penetration, Pt(%). Compute the penetration for each time interval using Equation 10-1. Pt= 100CiCot(10-1) where: Ci= inlet (media challenge) gas concentration (in ppm) averaged over the high concentration challenge portion of the test Cot= outlet (media downstream) gas concentrati
5、on (in ppm) at time “t” Since rig background concentrations must be insignificant, background corrections are not required to be made. Plot the penetration versus elapsed challenge time (beyond the conditioning period). 27 Normative Annex A. Insert Figure A-1 after Section A2.2 Example of Leakage Fr
6、om an ASHRAE Standard 52.2 Duct. Figure A-1 is missing from the published standard. See attached Figure A-1. Page 2 of 2 2013 ASHRAE. All rights reserved. Table 6.1.4.1 Standard Test Challenge Gases Category / Chemical CAS # MW* Low Conc. (ppb) High Conc. (ppm) NIOSHREL TWA (ppm)*OSHA PEL TWA (ppm)*
7、High Conc. Rationale * Capacity Used*Required ChemicalSulfur Dioxide 7446-09-5 64.1 50 35 2 5 AA 6%, x 8%, yb Formaldehyde 50-00-0 30.0 100 1 0.016 0.75 EE 3%, x Ammonia 7664-41-7 17.0 100 75 25 50 AA 5%, ya Ozone 10028-15-6 48.0 75 0.5 0.1 (c) 0.1 BB none Toluene 108-88-3 92.1 400 50 100 200 AA 20%, z DMMP 756-79-6 124.1 75 20 none none Figure A-1. Static leak test of ASHRAE Standard 52.2 duct after test rig sealing.
