Effectof(optimised)noisebarriers onairquality TestSiteIPLA28 - - PowerPoint PPT Presentation

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Effectof(optimised)noisebarriers onairquality TestSiteIPLA28 - - PowerPoint PPT Presentation

Feb 13, 2024 305 likes •691 views

M+P consultingengineers MllerBBMgroup

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IPLconference AirQualityalongsidemotorways 1 M+P– consultingengineers MüllerBBMgroup

  • Effectof(optimised)noisebarriers
  • nairquality

TestSiteIPLA28

JanHooghwerff ChristiaanTollenaar RoyvanderHeijden

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IPLconference AirQualityalongsidemotorways 2

Goalandresearchquestions Questions ▪ do(noise)barriershaveasignificantimpacton thedilutionofairbornepollutants? ▪ canbarriersbeoptimised forthispurpose? Approach ▪ competitiontoinducemarketplayerstocomewith ideas ▪ investigationofideasattheIPLTestSite

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Putten

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TestSiteLocation

Noise barriers Zero'situation

N

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Artistimpression ofthe TestSite

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3.75 ≈ 3.5? 3.5 3.75 4.5? ≈ 8m 5 5 18.5 28.5m

M1 M2 M3

≈ 11m

B T2 T1 E

Cross'section ofthe road profile

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M13 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12

Referencebarrier Zerosituation Backgroundconcentration

M13 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 north

Testbarrier1 Testbarrier2

Schematic view ofmeasurement positions

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Experimentalapproach

M13 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12

Referencebarrier Zerosituation Backgroundconcentration

M13 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 north

Testbarrier1 Testbarrier2

north

Witheasternwind: backgroundconcentration=M13 roadcontribution=M2– M13 barriereffect=(M5M13)/(M2M13)

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What wasmeasured?

NOx ▪ continuouswithNOxmonitor ▪ Ozon at3positions PM10 ▪ 24hourswithreferencemethod(LVS) ▪ continuouswithOsiris ▪ continuouswithTEOM Meteorologicaldata Traffic(partly)

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Airpointer

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NOx andOzon with Airpointer

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Measurement systems PM' LVS ▪ 24hourswithreference method(LVS)

LVS

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Measurement systems PM' Osiris ▪ continuous ▪ basedonlight scattering ▪ inresultstoo much uncertainty

Osiris

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PMwith TEOM

Sample filter

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Instrumentconfiguration

Reference barrier Zerosituation Testbarrier 1 Testbarrier 2 Backgroundconcentration Realtime PMOsiris PM10reference method PM2.5reference method Realtime PMTEOMFDMS Realtime NOx measurement Meteorology measurement Realtime PMTEOM Realtime O3 measurement Sunlight measurement

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Instrument comparison

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Which barriers andwhen?

nobarrier 7meterhighstandard barrier 5:December2008 March2009 Greenbreath (MOWI/Bos variant) Cleanstone (Tauw/Holland) 4:August– November2008 ActiveGreennoisebarrier (Aacoustics) Cleanscreen (Redubel) 3:April– August 2008 vegetatedbarrier (Mostert deWinter) Ttopbarrier 2:December2007 – March2008 4meterhigh reference barrier fibreboardconcretewith TiO2coating(Durisol) 7meterhighstandard barrier 1:July October 2007 barrier3 barrier2 barrier1 Session/period

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7'meter standardbarrier 4'meter referencebarrier

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barrierwithT'top vegetatedbarrier (Mostert deWinter) Cleanstone (Tauw/Holland) Cleanscreen (Redubel) ActiveGreennoisebarrier (Aacoustics) Greenbreath (MOWI/Bos variant) fibreboardconcretewithTiO2 coating(Durisol)

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M13 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12

Referencebarrier Zerosituation Backgroundconcentration

M13 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 north

Testbarrier1 Testbarrier2

NOx 10mbehindreferencebarrier

y=0.80x 100 200 300 400 500 100 200 300 400 500 NOxmeetpunt2[;g/m3] NOxmeetpunt5[;g/m3]

contributionoftheroad10m road contribution M2 road contribution M5

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PM10 10mbehindreferencebarrier

y=0.69x 20 40 60 20 40 60 PM10meetpunt2[;g/m3] PM10meetpunt5[;g/m3]

contributionoftheroad10m road contribution M5 road contribution M2

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Barrier effectfor NOx,by month

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Schermeffect[%]

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4mreferencebarrier 7mstandardbarrier

7'meter standardbarrier 4'meter referencebarrier

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NOx

10 20 30 40 50 60 70 5 10 15 20 28,5 distancebehindthebarrier[m] Barriereffect[%] 4mreferencebarrier 7mstandardbarrier

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NO2

30 20 10 10 20 30 40 50 60 70 5 10 15 20 28,5 distancebehindthebarrier[m] Barriereffect[%] 4mreferencebarrier 7mstandardbarrier

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PM10 with TEOM

20 20 40 60 80 100 5 10 15 20 28,5 distancebehindthebarrier[m] Barriereffect[%] 4mreferencebarrier 7mstandardbarrier

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10% 6% 26% Total 2% 1% 4% Random errors 4% 4% 4% Measurement line 9% 4% 25% Instrument NO2 NOx PM10 TEOM

Totaluncertainty

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Average effectreference barrier

▪10mbehind barrier ▪period Juli2007– March 2009 ▪valid for …

Sessions 1t/m5

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NO2 20(6) NOx Averageeffect[%]

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barrierwithT'top vegetatedbarrier (Mostert deWinter) Cleanstone (Tauw/Holland) Cleanscreen (Redubel) ActiveGreennoisebarrier (Aacoustics) Greenbreath (MOWI/Bos variant) fibreboardconcretewithTiO2 coating(Durisol)

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Optimised barriers NOx

30 20 10 10 20 30 40 50 60 periode2 periode3 periode4 periode5 Schermeffect[%] MostertdeWinter ActiveGreen Greenbreath Ttop Cleanscreen Cleanstone 7Mscherm Referrentiescherm

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Optimised barriers NO2

40 20 20 40 60 80 periode2 periode3 periode4 periode5 Schermeffect[%] MostertdeWinter ActiveGreen Greenbreath Ttop Cleanscreen Cleanstone 7Mscherm Referentiescherm

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Optimised barriers PM10

60 40 20 20 40 60 80 100 periode1 periode2 periode3 periode4 periode5 Schermeffect[%] Greenbreath Cleanstone 7Mscherm Referrentiescherm

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Conclusions Question1 ▪ do(noise)barriershaveasignificantimpacton thedilutionofairbornepollutants? Answer ▪ bothforNOx andPM10 significanteffects ▪ barrierheightisaimportantfactorforthebarrier effect

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Conclusions Question2 ▪ canbarriersbeoptimised forthispurpose? Answer ▪ noneoftheinnovativebarriersscoredsignificantly betterthanthe‘referencebarrier’

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Thankyouforyourattention