Changes and Challenges of 52.2 and ISO Update Michael Corbat April 16, 2015

Bio Senior Product Engineer with Filtration Group for 14 years Bachelor of Science Engineering Management – Western Michigan University MBA from Northern Illinois University Chair of ASHRAE Standard 52.2 Chair of ASHRAE Technical Committee 2.4 Standards Subcommittee Voting Member of ASHRAE Technical Committee 2.4 Voting Member of ASHRAE Guideline Committee 35 US Expert to ISO TC 142/Working Group 9 - Particulate air filter intake systems for rotary machinery and stationary internal combustion engines

Agenda 52.2 ISO 16890 Other ISO TC 142 Documents Residential Test Standard Energy Usage Guidelines

2015 Supplement MERV Table Changes 8 n/a 20 ≤ E2 70 ≤ E3 9 35 ≤ E2 75 ≤ E3 10 50 ≤ E2 80 ≤ E3 11 20 ≤ E1 65 ≤ E2 85 ≤ E3 12 35 ≤ E1 80 ≤ E2 90 ≤ E3 13 50 ≤ E1 85 ≤ E2 14 75 ≤ E1 90 ≤ E2 95 ≤ E3 15 85 ≤ E1 16 95 ≤ E1 95 ≤ E2

2015 Supplement MERV Table Changes Reporting Old Reports are allowed to be recalculated Must be 2012 or newer Must meet all requirements of 2015 supplement (Shedding and Humidity) Must have “Recalculated” and reprint date on report Must still contain original test information including date All new reports must contain language “52.2-2012 with 2015 Supplement”

2015 Supplement Relative Humidity Previous Range 20-65% RH ASHRAE RP-1287 Showed Major E2 and E3 Variations New Range 45% ± 10 Measured at filter under flow Fully Incorporated into Standard

2015 Supplement Shedding Calculation Standardizes time for measuring shedding – 20 min Downstream background shall be no more than 5% greater than upstream during challenge Will not affect most tests

Approved Addendum Particle Counter Change Resolution would require the use of Optical Particle Counter Goal: Reduce variation Will be published in June

52.2 Proposed Items Items that will be discussed in June Full test only to use MERV Efficiency data must be included in report E values included in reporting value Example MERV 12-80/90 Optional Appendix for multi-stage filter testing Mandatory Appendix J has been voted down

52.2 Research Primary Project Independent Round Robin Repeat of ASHRAE RP-1088 Will follow inclusion of all changes Goal to determine ruggedness of test method

52.2 Research Second Project Independent round robin of Appendix J Compare with IPA Vapor standard being developed by ISO Goal – to determine repeatability and reproducibility for both methods Awaiting completion of the formal IPA Vapor method

ISO 16890 Four Parts Part 1 Classification System Voted to Final Draft International Standard (FDIS) in March Part 2 Efficiency Testing Voted to FDIS in February Part 3 Dust Loading Voted to DIS in January Part 4 Discharge Method Likely fully published by end of 2015 or early 2016

ISO 16890 16890 - Testing Sequence 52.2 – Testing Sequence Resistance vs Airflow Fractional Efficiency – Run similarly to 52.2 IPA Vapor Discharge Fractional Efficiency Dust Loading on 20% Increments 52.2 – Testing Sequence Resistance vs Airflow Fractional Efficiency Conditioning Load/Appendix J 25% Dust Load 50% Dust Load 75% Dust Load 100% Dust Load

ISO 16890 Data Calculation

ISO 16890 ≥ 50% ≥ 40% Group Name Requirement Class Reporting Value Emin(PM1) E(PM1) Emin(PM2.5) E(PM2.5) E(PM10) ISO Coarse ---- < 50% Arrestance ISO PM10 ≥ 50% ISO PM2.5 ≥ 40% ISO PM1

ISO 16890 16890 Outputs Filter Rating Read ISO__%PM__ PM value rounded to closest 5% Initial Pressure Drop PM1, PM2.5, PM10 (Average) PM1 (min), PM2.5 (min) Initial Arrestance First 30g or 0.6”WC Average Arrestance DHC 52.2 Outputs MERV Initial Pressure Drop E1, E2, and E3 Average Arrestance DHC Non-Required Outputs MERV-A E1, E2 and E3 per Appendix J

16890 vs 52.2 Standard Capacity Pleat Initial DP = 0.24” WC Filter Rating ISO 90%Arrestance PM1 = 9% PM2.5 = 28% PM10 = 42% PM1(min) = 9% PM2.5(min) = 28% Initial Arrestance = 89% Average Arrestance = 93% DHC = 106g 52.2 Initial DP = 0.24” WC MERV 7 @ 1970 cfm E1 = 10 E2 = 46 E3 = 57 Arrestance = 91.5% DHC @ 1.5” = 94g

16890 vs 52.2 95% Fiberglass V-bank 16890 52.2 Initial DP = 0.42” WC Filter Rating ISO 80%PM1 PM1 = 80% PM2.5 = 88% PM10 = 94% PM1(min) = 81% PM2.5(min) = 88% Initial Arrestance = 100% Average Arrestance = 100% DHC @ 1.5” = 502 g 52.2 Initial DP = 0.42” WC MERV 14 @ 1970 cfm E1 = 81 E2 = 97 E3 = 100 Arrestance = 99.9% DHC @ 1.5” = 446 g

16890 vs 52.2 95% Synthetic V-bank 16890 52.2 Initial DP = 0.28” WC Filter Rating ISO 70%PM2.5 PM1 = 56% PM2.5 = 70% PM10 = 83% PM1(min) = 27% PM2.5(min) = 50% Initial Arrestance = 100% Average Arrestance = 99% DHC = 335g *Average Effiency of Discharge & Initial = MERV 13 52.2 Initial DP = 0.28” WC MERV 15 @ 1970 cfm E1 = 86 E2 = 97 E3 = 99 Arrestance = 99.6% DHC @ 1.5” = 299 g MERV A = 13-A E1A = 67 E2A = 91 E3A = 98

ASHRAE Residential Standard Will be formally proposed to ASHRAE in June New committee will be formed Outside scope of 52.2 Base will be from 52.2 with a primary focus of PM 2.5 Filter conditioning not likely Minimum 2 years off AHRI method a possibility

Other ISO Standard Work Field testing of general ventilation filtration devices Replaced ASHRAE GPC 26 ISO 29463-2011 High-efficiency filters and filter media for removing particles in air 5 parts Testing of HEPA filters

Sustainability Both ISO and ASHRAE are handling ASHRAE GPC 35 ISO WG12 Both are in very early stages of work GPC 35 is requesting a research project for new loading dust Calculation portion is being worked on simultaneously