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ASST. PROF. JOHN GALLAGHER
TRINITY COLLEGE DUBLIN, IRELAND
“INTEGRATING PASSIVE CONTROLS IN THE URBAN ENVIRONMENT PLANNING PROCESS:
RESEARCH AND PRACTICE”
EMAIL: J.GALLAGHER@TCD.IE
WEB: WWW.TCD.IE/CIVILENG/PEOPLE/JGALLAG9/
TWITTER: @ENVDRJOHNG
PROF. MAX ZHANG
CORNELL UNIVERSITY, USA
EMAIL: KZ33@CORNELL.EDU
WEB: WWW.ENGINEERING.CORNELL.EDU/FACULTY-
DIRECTORY/K-MAX-ZHANG
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
A CONTEXT
PARTICULATE POLLUTION IS A
LONG-TERM CHALLENGE AND
WE NEED TO LOOK BEYOND
REDUCING SOURCE EMISSIONS.
IMPROVING AIR QUALITY AND
REDUCE EXPOSURE FOR THE
RECEPTOR BASED ON WHAT
POLLUTION REMAINS.
WHY WE HAVE ORGANISED THIS WEBINAR SERIES?
PASSIVE AIR POLLUTION MITIGATION IS A VERY ACTIVE FIELD OF RESEARCH
INTERNATIONALLY, BUT COMMUNICATION ACROSS COUNTRIES/CONTINENTS
IS SOMEWHAT LIMITED.
THERE IS A NEED TO SHARE FINDINGS ACROSS DISCIPLINES AND RESEARCH
FIELDS, AND ENGAGE WITH DIFFERENT STAKEHOLDER GROUPS TO DELIVER
HEALTHIER URBAN GREEN SPACES.
THIS WEBINAR SERIES AIMS TO PROMOTE THE SHARING OF BEST
PRACTICES AND ENHANCE COLLABORATIONS TO IMPROVE CLEANER AIR IN
THE BUILT ENVIRONMENT.
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
A CONTEXT
INFLUENCE ON AIR FLOW AND POLLUTANT DISPERSION ON
PERSONAL EXPOSURE.
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
INTRODUCING PASSIVE CONTROLS
LOW BOUNDARY
WALLS
PARKED CARSGallagher et al., 2011; 2012; 2013
INTERACTIONS
BETWEEN URBAN
MORPHOLOGY AND
LOCAL METEOROLOGY.
COMPUTATIONAL FLUID DYNAMIC
(CFD) IS A USEFUL ASSESSMENT
TOOL, BUT TIME AND EXPERIENCE
IS REQUIRED.
ISCAPE (IMPROVING THE SMART CONTROL OF AIR POLLUTION
IN EUROPE)
IMPLEMENT REAL-WORLD PHYSICAL INTERVENTIONS (PASSIVE
CONTROL SYSTEMS) ACROSS EUROPE.
QUANTIFY THE POTENTIAL OF PCS IN DIFFERENT CLIMATIC
CONDITIONS.
DEVELOP TECHNICAL GUIDANCE FOR PCS IMPLEMENTATION.
CO-DEVELOP POLICY DOCUMENTS TO ENSURE PCS IS PART
OF FUTURE URBAN PLANNING STRATEGIES.
Abhijith et al., 2017
www.iSCAPEproject.eu
@iSCAPEproject
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
INTRODUCING PASSIVE CONTROLS
SIMPLIFYING THE COMPLEX...
SOLID BARRIERS HAVE BEEN SHOWN TO IMPROVE LOCAL AIR QUALITY ON THE FOOTPATHS FOR
PEDESTRIANS IN SPECIFIC CONDITIONS.
Gallagher et al., 2011; 2012; 2013; 2015
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
TRANSLATING RESEARCH TO PRACTICE
LIFE CYCLE COSTS OF DIFFERENT MEASURES –
INSTALLATION VS OPERATIONAL COSTS/IMPACTS.
Jeanjean et al., 2017; Gallagher & Lago, 2019
IMPORTANCE OF DETAILING FOR STREET-LEVEL
GEOMETRY IN MODELLING.
IS A ‘BARRIER’ A GOOD THING?
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
TRANSLATING RESEARCH TO PRACTICE
ALTERNATIVE PASSIVE AIR POLLUTION MITIGATIONS MEASURES, THOSE HIDDEN IN PLAIN SIGHT?!
Gallagher et al., 2019 (in preparation)
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
TRANSLATING RESEARCH TO PRACTICE
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
KEY MESSAGES
Kumar, 2019; McNabola, 2019; Venkatram, 2019
Dispersion
Wet/Dry Settlement
Photochemistry
Hygroscopic growth
Coagulation/nucleation
Oxidation/Reduction
Variables
Building and street geometry
Leeward vs windward side
Traffic lanes, direction and layout
Meteorological conditions
Case Study
(Site specific)
Model
(Universal)
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
KEY MESSAGES
Baldauf, 2019; Janhall, 2019; Nowak, 2019
Vegetation characteristics
need to be considered
Dispersion & Deposition
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
KEY MESSAGES
Janssen, 2019; Isakov, 2019; Rodriques, 2019
Measurement vs Modelling
Macro vs Micro
“Still a (long) way to go!”
Traffic emissions are source of concern
Need to consider temporal
and spatial factors
TO ADDRESS THE CHALLENGE OF AIR POLLUTION, WE MUST ALSO CONSIDER THE
CONSEQUENCE(S) OF IMPLEMENTING CHANGE E.G. PASSIVE AIR POLLUTION MEASURES.
PASSIVE MEASURES OF AIR POLLUTION MITIGATION PLAY A ROLE IN
PROTECTING URBAN INHABITANTS AND CAN HAVE ADDITIONAL BENEFITS.
AS A COMMUNITY, PROMOTING A SHARING PHILOSOPHY CAN SPEED UP THE
TRANSLATION OF RESEARCH TO PRACTICE.
TECHNICAL GUIDANCE AND POLICY SUPPORTS ARE NEEDED, AND THE MULTIPLE
BENEFITS OF SOME AIR POLLUTION MITIGATION MEASURES MUST BE QUANTIFIED -
ENVIRONMENTALLY AND ECONOMICALLY.
AIR POLLUTION MITIGATION USING PASSIVE TECHNIQUES IN THE BUILT ENVIRONMENT
KEY MESSAGES
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