ASHRAE 145 2 ERTA-2011 Laboratory Test Method for Assessing the Performance of Gas-Phase Air-Cleaning Systems Air-Cleaning Devices.pdf

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1、Page 1 of 2 2011 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 August 25, 2011 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”. Page Erratum 21 10.6 Standard Capacity Test Penetration, Pt(%). Replace Section 10.6 with the following: 10.6 Standard Capacity Test Penetration, Pt(%). Compute the penetration for each time interval usin

3、g 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 concentration (in ppm) at time “t“ Since rig background concentrations must be insignificant, backgr

4、ound 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 From an ASHRAE Standard 52.2 Duct. Figure A-1 is missing from the published standard. See attached figure. Page 2 of 2 2011 ASHRAE. All rights reserved. Figure A-1. Static leak test of ASHRAE Standard 52.2 duct after test rig sealing.