micro environment in city of chicago and impacts to...
TRANSCRIPT
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Micro Environment in City of Chicago and Impacts to UBEM
Luke Leung, LEED Fellow, PE
Skidmore, Owings & Merril
ASHRAE seminar 27 “Urban Scale Energy Modeling”, Part 7
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1. Provide an overview on “Array of Things” and microclimate in urban environment2. Understand the differences between measured micro environment data versus predicted by ASHRAE formula
Learning Objectives
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Acknowledgements
Prof Brent Stephens, IITArgonne National Laboratory, Charlie Catlett
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ENVIRONMENT VARIATIONS WITH HEIGHT
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TEMPERATURE LAPSE RATE
3.5 F/1000’3.0 F/1000’
5.4 F/1000’
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P = V3
VELOCITY WITH HEIGHT
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NORMAL LAPSE RATE
6.5 C/1000 M
3.5 F/1000 Ft
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NORMAL LAPSE RATE
6.5 C/1000 M
3.5 F/1000 Ft
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NORMAL LAPSE RATE
6.5 C/1000 M
3.5 F/1000 FT
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3% Savings
Base Line
With Environmental Variations
BEIJING, CHINA
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4-5% Savings
Base Line
With Environmental Variations
ABU DHABI, UAE
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NORMAL LAPSE RATE
Normal Lapse Rate: .65 °C/100 M
1. Linear2. .65 °C/100 M
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Credit: Estimating natural ventilation potential for high-rise buildings considering boundary layer meteorology
TEMPERATURE WITH BOUNDARY CONDITIONS
Center for Green Buildings and Cities, Harvard University, Cambridge, MA 02138, USA
1. Not linear?2. More than .65 °C/100 M
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Credit: Estimating natural ventilation potential for high-rise buildings considering boundary layer meteorology
TEMPERATURE WITH BOUNDARY CONDITIONS
3.5 °C/100 M
Center for Green Buildings and Cities, Harvard University, Cambridge, MA 02138, USA
1. Not linear?2. More than .65 °C/100 M
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URBAN FORM INFLUENCES ON URBAN CLIMATE
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URBAN FORM AND WIND SPEED
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THE “BUBBLE” AT STREET LEVEL
- Higher temperature- Lower wind speed- Higher particulate levels- Higher carbon dioxide
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Credit: Estimating natural ventilation potential for high-rise buildings considering boundary layer meteorology
TEMPERATURE WITH BOUNDARY CONDITIONS
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Credit: Estimating natural ventilation potential for high-rise buildings considering boundary layer meteorology
TEMPERATURE WITH BOUNDARY CONDITIONS
![Page 20: Micro Environment in City of Chicago and Impacts to UBEMweb.eecs.utk.edu/~jnew1/presentations/2017_ASHRAE_UBEM7...Micro Environment in City of Chicago and Impacts to UBEM Luke Leung,](https://reader036.vdocuments.site/reader036/viewer/2022071111/5fe6ccc486c71843dc28e713/html5/thumbnails/20.jpg)
Credit: Estimating natural ventilation potential for high-rise buildings considering boundary layer meteorology
NATURAL VENTILATION OPPORTUNITIES WITH HEIGHT IN DIFFERENT CITIES
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Credit: Estimating natural ventilation potential for high-rise buildings considering boundary layer meteorology
NATURAL VENTILATION OPPORTUNITIES WITH HEIGHT IN DIFFERENT CITIES
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0.5ᄉm dif PM m31.0ᄉm dif PM m3
2.5ᄉm dif PM m35.0ᄉm dif PM m3
10.0ᄉm dif PM m3
0
20
40
60
80
100
120
140
160
GroundLevel -
Outdoor
Level 43 -Outdoor
Level 76 -Outdoor
Level 153 -Outdoor
μg/m3
PARTICULATE MATTERS MEASUREMENTS OUTSIDE BURJ KHALIFA
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Vertical gradients of HONO, NOx and O3 in Santiago de Chile
OZONE VARIATION WITH HEIGHT
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https://www.esrl.noaa.gov/gmd/ccgg/about/co2_measurements.html
CO2 MEASUREMENTS MADE ON A TALL TV ANTENNA IN A FORESTED AREA IN NORTHERN WISCONSIN
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https://www.esrl.noaa.gov/gmd/ccgg/about/co2_measurements.html
CO2 MEASUREMENTS MADE ON A TALL TV ANTENNA IN A FORESTED AREA IN NORTHERN WISCONSIN
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CO2 MEASUREMENTS MADE IN EVANSTON
Seasonally varying contributions to urban CO2 in the Chicago, Illinois, USA region: Insights from a high-resolution CO2 concentration and δ13C record
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MEASUREMENTS IN CHICAGO
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TemperaturePressureLightVibrationCarbon MonoxideNitrogen DioxideSulfur DioxideOzoneSound IntensityPedestrianVehicle TrafficVideo
ARRAY OF THINGS
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http://www.govtech.com/fs/data/What-is-Chicagos-Array-of-Things-Initiative.html
ARRAY OF THINGS
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TEMPERATURE – CHICAGO 60 + STORIES TALL BUILDING
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HUMIDITY – CHICAGO 60 + STORIES TALL BUILDING
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PM 1 – CHICAGO 60 + STORIES TALL BUILDING
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PM 2.5 – CHICAGO 60 + STORIES TALL BUILDING
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PM 10 – CHICAGO 60 + STORIES TALL BUILDING
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PM 1, 2.5, 10 – CHICAGO 60 + STORIES TALL BUILDING
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OZONE – CHICAGO 60 + STORIES TALL BUILDING
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CARBON DIOXIDE – CHICAGO 60 + STORIES TALL BUILDING
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CO2, OZONE, NO2 – CHICAGO 60 + STORIES TALL BUILDING
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MODELING CHICAGO