draft meeting minutes ashrae sspc...

DraftMeetingMinutesASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEff.byParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

Votes:FontisBold,Black

TaskGroups:FontisBold,BlueActionItems:FontisBold,Red

©2012ASHRAE.Allrightsreserved.ThisisadraftdocumentforreviewonlybythecognizantASHRAEgroupsandotherdesignatedreviewersandisnotintendedfordistributiontoanyprivateinterests,individuals,orthirdpartiesthatarenotdesignatedasASHRAEreviewersforthisdocument.Thisdocumentmaynotbedistributedinwholeorinpartineitherpaperorindigitalformwithouttheexpresspermissionofthechairofthecommitteeoriginatingthisdocument.Theappearanceofanytechnicaldataoreditorialmaterialinthisdraftdocumentdoesnotconstituteendorsement,warranty,orguarantybyASHRAEofanyproduct,service,process,procedure,design,orthelike,andASHRAEexpresslydisclaimssame.

1) CalltoOrder8:00am(5min.)a) Introductionsb) Rollcall&quorumconfirmation

BobBurkhead‐present MichaelCorbat–notpresent KathleenOwen–notpresent KeithChesson–present KJChoi‐present ZiedDriss–present ChrisFisher‐present LenDuello‐present TomJustice‐present GemmaKerr‐present DaveMatier‐present PhilMaybee‐present BruceMcDonald‐present StephenNicholas–notpresent JohnRobertson–notpresent ChristineSun–present PaoloTronville–notpresent NAFA(AlVeeck)‐present 13here,5not–wedohavequorum

2) Reviewofthedraftagenda–agreedtoamendaspertheattachedfinalagenda(redtype)3) ReviewandapprovaloftheNewYork2014minutes–Votetoapprove13‐0‐0‐184) Chair’sRemarks‐

a) Emphasizedtheprimeobjectiveofrepublicationin2017

DraftMeetingMinutesASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEff.byParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

b) SPLSrosterrecommendationsaredueby22August2014–sopleasehaveyour

paperworksubmittedsoonandmakesuretheincomingchair,MikeCorbattknowsyourwishes.RollingoffthismonthareBobBurkheadandLenDuello

5) LiaisonReports(15min.)a) StandardsCommitteeLiason–RitaHarold–noreportb) SSPC62.2Liason–IanWalker–noreport

6) OLDBUSINESS:a) ActiveAddendaReview:

PublicationreviewAddendumBandDarecomplete(SheddingandHumiditychanges).Addendamaynowbepublished.WatchtheASHRAEbookstore.

AddendumC‐OPCspecification,wentoutforpublicreview.Fourcomments.ReviewVijay’scommentandMikeCorbett’sresponse.BurkheadsuggestssendoutCorbett’sresponsetocommitteebyletterballotforconsiderationandfeedback.

AddendumA–MERVtablechange.BurkheadwroteresponsetoM.Renncomment.WaitingforRenntorespondtoBurkheadresponse.

b) APPENDIXJDISCUSSION Reviewofpriormeeting(NYC)discussion–McDonaldhadmademotion

toincludeAppendixJintothemainbodyofthestandard. T.Justice–Madeapresentationoutliningresultsofa2005research

projectASHRAE1189RP(copyattached).Discussionincludedthatdifferentconditionsaffectdischarge,recirculationairmuchweakereffectofdischargevs.100%outsideair,longrangeplanningonwherewegowiththisStandard,Costimpact,Volumeoftesting.PresentMERVandMERV‐A,ISOdocumentaswrittenusesIPAvaportodischargemedia.ISOusestheundischargedanddischargeaverageinreporting,supposedlyclosetoAppendixJ(notalways).

M.Britt–Madeapresentation(copyattached).Somein‐servicefiltersdecreaseinefficiency.Notallbutsome.Extentofdecreasedependentonmediaandcontaminants.PointedoutthattherehasbeenNOlabtolabreproducibilitydemonstratedtodate.Thatthelabconditioningstepcancauseefficiencydecrease.Timetomeetconditionedcriteriatakes2‐3days,extentofdecreasemaybehigherorlowerthanin‐servicefilters,SomefiltersnotaffectedbyIPA,circulatingAir/IPAvaporcreatesuniformenvironment.Shouldbeverified,timetoreachminimumefficiency~1hour,IPAvaporreducesefficiencytotheminimumvalue,aseffectiveasimmersion,IPAdischargesthefilter,APJconditionsthefilter.PotentialChoices–nothing(continuewithinformativeAPJ),

DraftMeetingMinutesASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEff.byParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

changeAPJtomandatory,AddIPAasappendix,retainAPJasinformative.ReplaceAPJwithIPA,ReplaceAPJwithmandatoryIPA.MakeitInformativeorMandatory,willnotmakemajorchangesintothestandard.IPAeffectondustloadingisnotestablished.

JohnZhang‐madeapresentation(copyattached)–Residentialin‐situloadingvs.52.2‐evaluated4differenttypesforelectretHVACfilters.Measuredinitialefficiency.RecommendedthatweuseaverageefficiencytodetermineMERVandhaveseparatestandardsforcommercialandresidentialapplication.

FurtherdiscussionwasentertainedandMcDonaldcalledthequestionforvoteonpointoforder.VoteonQuestion(CloseDebateandVoteonMcDonaldMotion)4‐9‐0‐18

MotionfromMcDonaldtotableuntilnextmeetingfordiscussion.SecondbyKerr12‐1‐0‐18

c) ApplicationGuidestatusReport–PhilMaybee

Trytocreateadocumentonhowonecanuse52.2inthefield.JointdocumentbetweenNAFAandASHRAE?

NAFAhasabrochureonunderstandingMERVandincluded. Guideshouldreflectscopeofstandard.Nohistoryonwhywewentto

fractionalefficiency. PerceptioninindustryisASHRAEisdoingthetestingandpoliceor

validatelabtesting. Documenttobesenttovotingandnon‐votingmemberstoreviewand

commenttosendtoASHRAE.d) MERV17–20Issue‐discussiononmakingsuretheseareremovedfromthe

documentassoonaspossible–nextaddendumsubjectforNewYork.e) Table“notes”correctionissues–OwenandBurkheadhadoutlinedfurther

commentchangesrequiredinfutureaddenda–detailswerenotdiscussedatthismeetingbutDOneedtobecommunicated.BurkheadtoreviewbyNewYork.

f) ASHRAE52.3discussion–Whyconsideranew52.3?Discussionhighlightswere: Splitthestandardbetweencommercialandresidential BurkheadandJusticetoinitiatediscussionwithStandardsCommitteeon

ISOinteractionandphilosophy Potentialforcompletelynewmethod,instrumentationandreporting

formats SuggestedputtingoutasolicitationintheASHRAEjournal. Becarefulofscopechangeandfocus PointmadethatISOismovingtowardaPMbasedtestandratingmethod

DraftMeetingMinutesASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEff.byParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

Burroughspointedoutthatthesedirectionsshouldcomefromthe

cognizantcommitteeforus(TC2.4)g) DiscussiononASHRAE62Filtrationcommittee–Veeckmentionedaposition

paperthathasbeenpublishedandthatlittleforwardmovementhasoccurredintermsoffiltrationaspectsofthestandard.Furtherpointswere:

MovefromMERV6toMERV8minimum TryingtouseCADRfromAHAMinsteadofMERV(duetoneedtoprovide

ratingwherethereisnocentralHVAC). NotedtheMERV13minimuminLEEDSratingandhowtheexpectation

couldmoveintothestandard Needguidanceonwhattodonext.(McDonaldhadmadeapresentation

tothemonusingPMdesignationssimilartoISO)7) TaskGroupUpdates:

a) TGforAirDensityCalculation–Britttoincludeinthestandard.PreviouslyvotedonandnowtargetedforChicago

b) TGforIPAVaporconditioningroundrobin–BrittandCorbattomakeaproposalandsolicitcommitteefeedback.

c) TGfor“seriesTesting–BrittandMcGrath.Timetosendtovotingandnon‐votingmembershiptoreviewandcommentbacktoMonroeBrittandToddMcGrathfordiscussionatChicago.

d) TGfor52.2longtermplanningstrategy–McGrath McGrathexplainedneedformorefocus Nothingwrittenasyet Assignedtoworkonit–Burkhead,Vatine,Vijay,Maybee Referto52.3discussionprior

e) NEWproposedTG–Maybeemovedtocreatea“minimumefficiency“requirementsimilartoEN779.Veeckseconded–passed13‐0‐0‐18

f) NewTGconsideredtodiscuss,getarmsaroundandproposechangestoconditionexpectation

g) NewTGdiscussedfor“cyclingtesting”–tabledforlackofavolunteertochair(butHanleywasconsidered)–possibleRTAR

8) NewBusinessa) NewInterpretationRequestfromBruceMcDonaldregarding52.2usingquasi‐

solidparticles.AretheseparticlesallowableinStandard52.2?M.Corbettresponsetobesentouttovotingmembership.Commentisthestandardisnotspecific.Humidityinchamberisimportant.RHupdatetoaddress?

9) ResearchSubcommitteeAgenda–KeithChesson

DraftMeetingMinutesASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEff.byParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

a) RTARonVariabilitystudy‐RTARfromtheVariabilityTGforroundrobintesting

toevaluatetheeffectofthe(4)52.2addendaonlabvariability.IhavenotgottenanupdatefromGemmatodateandI’mreachingbackouttoher,asthereistherequesttoget2.4co‐sponsorship.GemmatoproduceRTARintwoweeks.b) RTARonIPAVapor–BobBurkhead‐Bobwaslisted.WaittableuntilISOresponse.

c) RTARonneutralizationofAerosol–BruceMcDonaldtostartstatementwithbaselinedatafromRoundRobin.

d) RTARforquantifyingparticlesheddingfromloadedairfiltersandcyclingintostaticanddynamic.Bobischampion.Anyparticle(fibersheddingorsyntheticdust).Chessontoassist,Matier,ChristineSun.Talkabout2.4assistanceorfoldinto2.4Research.e) NewResearchsubjects

newradonstatsfromCanada,betterdealtwithinTC2.3.10) Adjourned‐T.Justice,SecondG.Kerr;13/0/0/0/CV(For‐Against‐Abstain‐Absent‐ChairVoting)

Appendices:

a) Attendeesb) FinalAgendac) TomJusticepresentationd) MonroeBrittpresentatione) JohnZhangpresentation

DraftMeetingMinutesASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEff.byParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

Appendix:Attendees(56)

DraftMeetingMinutesASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEff.byParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

MeetingAgendaASHRAESSPC52.2

MOT‐GeneralVentilationAir‐CleaningDevicesforRemovalEfficiencybyParticleSizeSaturday,28June2014,8:00am–12:00pm

Room607WashingtonStateConventionCenter6thFloor800ConventionPlace,Seattle,Washington10019

1) CalltoOrder8:00am(5min.)a) Introductionsb) Rollcall&quorumconfirmation

2) Reviewofthisagenda–amendandappendassuggested(5min.)3) ReviewandapprovaloftheNewYork2014minutes(5min.)4) Chair’sRemarks(15min.)

a) Reviewofobjectives Republicationin2017 Plannedaddendafocusthrough2017 Longrangeplanning(researchinitiatives–5yearplan)

b) SPLSRosterrecommendationsfor2014–currentvotingstatus5) LiaisonReports(15min.)

a) StandardsCommitteeLiason–RitaHaroldb) SSPC62.2Liason–IanWalkerc) 52.2ResearchSubcommittee–KeithChesson(reportatendofmeeting)

6) OldBusinessItems/CommitteeReports(1hour)a) PublicationPublicReviewofactiveaddendumactivities.

AddendumBandD–(SheddingissueandHumidityChange) AddendumC‐OPCspecificationlisting AddendumA–MERVtableChange

b) AppendixJ–MonroeBritt,TomJustice,JohnZhangc) Applicationguidestatus–PhilMaybeed) MERV17through20issuee) Tablecorrectionsissue–KathleenOwen

7) TaskGroupReportsandDiscussions(1hour)a) TGforAirDensitycalculation(MonroeBritt)b) TGforIPAvaporconditioning(MonroeBritt)MikeCorbat–RoundRobinc) TGfor“seriestesting”–MonroeBrittandToddMcGrathd) TGfor52.2longtermplanning/strategy–ToddMcGrath

8) NewBusiness(1hour)a) NewInterpretationRequestfromBruceMcDonaldb) Barney’spoint

9) ResearchSubcommitteAgenda–KeithChessona) RTARonVariabilitystudy(Addendasuccessabove)‐??b) RTARonIPAVapor–BobBurkheadc) RTARonneutralizationofAerosol–BruceMcDonaldd) RTARforquantifyingparticleShedding–BobBurkheade) NewResearchsubjects

10) Adjournat12:00noonsharp

SSPC 52.2 Moving Appendix J to Main Body

KEY QUESTIONS

• Does this conditioning step simulate the efficiency drop

seen in charged filters?

• Do we plan to eventually adopt the international test

standard?

• Does the current motion as stated provide adequate

detail?

Does this conditioning step simulate the efficiency drop seen in charged filters? • ASHRAE 1189 RP showed that 100% of the 15 filters

tested in-situ showed a definite decline in efficiency. •  “Therefore, it is of crucial importance to have information

about the efficiency baseline, i.e. the efficiency which corresponds to the discharged state of the materials.”….VTT.

• Degradation of efficiency varies depending on particle size, wet vs. dry, humidity, particle composition, elapsed time, etc.

Outdoor Air versus Exhaust Air •  “When the exhausted indoor air was used to challenge the

charged filter materials, much weaker efficiency decrease was observed compared to challenge with outdoor air”…VTT

•  “This supports the assumption that charged air filters may perform better in the air re-circulation systems, especially if there are no fine particle sources inside the building”…VTT

Do we plan to eventually adopt the International Test Standard? •  It is doubtful that the ISO committee will adopt the

Appendix J method. •  If the ASHRAE adopts the international standard this will

be the second Baseline change since Std 52.2-2012. • Old test reports become obsolete just as with the previous

change. • We lose a lot of comparative data. • We need to step back and think about long range

planning.

Does the Current Motion as stated provide Adequate Detail. •  The cost of testing will go up but how much? • Can everyone’s need for new test reports be

accommodated in a timely manner and are we going to guarantee that no company will lose business because independent testing could not be obtained for a bid.

• Do we still present MERV or just MERV-A results.

•  Is there a Timetable for the roll-out?

END

 ……Just  the  Facts  

 �  Some  in-­‐service  filters  decrease  in  efficiency  

�  Extent  of  decrease  dependant  on  media  and  contaminants  

�  Appendix  J  lab  conditioning    step    can  cause  efficiency  decrease                  Lab-­‐to-­‐Lab  reproducibility  debatable                Time  to  meet    conditioned  criteria  can  take  up    to  2  to  3  days                  Extent  of    decrease  may  be  higher  or  lower  than  in-­‐service  filters    �  Exposure  to  IPA  vapor    can  cause  efficiency  decrease                  Circulating  air/IPA  vapor  chamber  creates    uniform  environment                  Lab-­‐to-­‐Lab  reproducibility  should  be  verified  in  circulating  chamber                  Time  to  reach  minimum  efficiency  approx.  1  hour                    IPA  vapor  reduces  efficiency  to  the  minimum  value                      IPA  vapor  is  as  effective  as  IPA  liquid  immersion  ,  or  more  so  

Condi1oning  or  Discharge  ??  �  Potential  Choices                  1.      Do  Nothing,    continue    with  Informative  Appendix  J                  2.      Change  Appendix  J  to  Mandatory                  3.      Add  IPA  Vapor  as  Appendix,  retaining  Appendix  J  as  Informative                  4.      Replace  Appendix  J  with  Informative  IPA  Vapor  method                  5.      Replace  Appendix  J  with  Mandatory  IPA  vapor  method    •  If  Appendix  J  is  retained  as  Informative    or  made  Mandatory,  major  

changes  in  52.2  test  procedures  will  not  be  necessary.    Dust  loading  portions  conducted  on  same  filter  as  conditioned.  

 •  If  IPA  vapor  method  is  added  as  Informative  or  Mandatory,  major  

changes  to  52.2  may  want  to  be  considered.    Dust  loading  portions  may,  or  may  not,    want  to  be  conducted  on  discharged  filter.  

 Possible  Major  Changes  to  52.2  �  IPA  Vapor  discharged  filters  can  have  lower  efficiencies  than    filters    

conditioned  per  Appendix  J.    Changes  may  be  desired  because  of  extent  of  IPA  vapor  discharge.    

�  Effect  of  IPA  vapor  on  dust  loading  not  established.    (More  study  on  effect  of  Appendix  J  also  needed?)  

�   Test  of  two    identical  filters  may  be  considered.    First  filter  will  be  for  initial  test  and    subsequent    five    dust  loading/efficiency  tests,    Second  filter  will  also  be  for  initial  efficiency    test    and  re  test  after  IPA  vapor  exposure.  Dust  loading  will  not  be  performed  on  this  second  filter.  

 �  MERV  curve  may  be  established  by  minimum  of  numerical  average  of  First  

filter    values,  including  dust  loading,    and  Second  filter  discharged  values.    If  First  filter  values    drops  below  Second  filter  values,    First  filter  values  will  be  used  directly.        

In-home vs. Lab-based Performance Testing of Residential HVAC Filters

3M Company June 28, 2014

Residential In-situ loading vs. ASHRAE 52.2 MCE & Appendix J • Evaluated 3 different types of electret HVAC

filters. • Measured initial efficiency of test filters •  Installed each type of filters in 3 or 4 different

homes. • Removed at 90 days (EOL) to measure fractional

efficiency in the lab •  Performed ASHRAE 52.2 testing on companion

filter for each performance level

Initial Efficiencies of Filter A

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ASHRAE 52.2 Appendix J Conditioning Results Overlay for Filter A

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Initial Efficiencies of Filter B

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ASHRAE 52.2 Appendix J Conditioning Results Overlay for Filter B

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Initial Efficiencies of Filter C

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ASHRAE 52.2 Appendix J Conditioning Results Overlay for Filter C

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Summary •  Appendix J conditioning under-predicts the filter performance,

not suitable for residential HVAC air filters. �  Aerosol source and duty cycle differences may be attributed to under-

prediction.

    Ini$al   52.2  MCE   Home  Use  Appendix  J  Condi$oning  

Filter  A   MERV  11   MERV  11   MERV  7/8   MERV  7  

Filter  B   MERV  11   MERV  11   MERV  10/11   MERV  6/7  

Filter  C   MERV  13   MERV  13   MERV  12   MERV  8  

Recommendations

• Conduct research to identify/develop a test aerosol that is representative for residential home environment.

• Use the average efficiency , average of initial, intermediate and final efficiencies, for reporting residential filter MERV value.

•  Separate the air filter standards for commercial and residential applications.