first large coverage facades solar cadaster from lidar data and city model
DESCRIPTION
This presentation shows the first large coverage facades solar cadaster based on LiDAR data and city model. For the whole City of Vienna with more than 160.000 buildings the solar potential and the sun duration for all facades and roofs have been calculated. Shadows of trees and nearby houses identified from the LiDAR data are clearly visible. A new service for the renewable energy market and a perfect thematic layer for city models.TRANSCRIPT
First large coverage solar cadaster for building facades
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First large coverage solar cadaster for building facades using LiDAR data and City Models
Frederic Petrini-Monteferri, Volker Wichmann, Christian Georges, Laserdata GmbH
Markus Posch, STEPS F&E OG
Magnus Bremer, University of Innsbruck
Stefan Dürauer, Christian Sam Magistrat City of Vienna, MA 41
AGIT Symposium 2014
First large coverage solar cadaster for building facades
Motivation
State of the art: Solar potential calculations for roofs and open space
So far: No consideration of energy relevant building facades
Solar heating / cooling / modernizing insulation of buildings
Sun duration (real estate market)
Now: New approach for insolation calculation of building facades * * Project funding by the Government of the Province of Tyrol; first commercial rollout: City of Vienna
First large coverage solar cadaster for building facades
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INPUT: Building Model CityGML + LiDAR data
160.000 buildings
complete Vienna
First large coverage solar cadaster for building facades
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328 Mio m² facades + 52 Mio m² roofs
LOD 2 with measured eaves height
INPUT: Building Model CityGML + LiDAR data
First large coverage solar cadaster for building facades
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LiDAR data with 0.5 Meter grid cell size for shadow effects on
building facades and for insolation calculation on roofs
INPUT: Building Model CityGML + LiDAR data
First large coverage solar cadaster for building facades
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Processing: Generation of synthetic points on CityGML building facades
First large coverage solar cadaster for building facades
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Processing: Calculation of ASPECT / SLOPE based on CityGML building facades
N N W S O
First large coverage solar cadaster for building facades
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Processing: Solar Insolation Calculation
Input - Point Cloud with synthetic points for building facades with attributes slope, aspect - Digital raster surface model from LiDAR data
Insolation calculation - Definition of output data sets: + direct insolation + diffuse insolation + total insolation + sun duration … - Geographic coordinates of the area of interest - Time resolution = interval for insolation simulation (e.g. every 30 min) - Time period (day, month, year) - Method for aggregation of insolation and sun duration values - Meteorological correction
Output - Point cloud with insolation / sun duration and conversion to CityGML textures
First large coverage solar cadaster for building facades
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Shadow relevant objects from LiDAR data in front of building facades
Processing: Solar Insolation Calculation
First large coverage solar cadaster for building facades
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Yearly solar potential [kWh/m²]
0 900 Yearly solar potential
Processing: Solar Insolation Calculation Facades
First large coverage solar cadaster for building facades
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Yearly solar potential [kWh/m²]
0 900 Jahressolarpotenzial
Processing: Solar Insolation Calculation Facades
First large coverage solar cadaster for building facades
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Insolation results from facades and roofs = first large coverage solar cadaster for complete building hull
Applications:
Photovoltaic and solarthermal earnings
Positioning of moduls
on facades/roofs
Facade specific insulation of buildings
Sun duration for real
estate market
First large coverage solar cadaster for building facades
Integration at the municipality of the City of Vienna
Available to all city departments via internal 3D-Webviewer of the municipality
Integration of solar potential of facades / roofs and sun duration
Important thematic layer for City Model
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First large coverage solar cadaster for building facades
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Results: Solar potential facades / roofs
[kWh/m²]
First large coverage solar cadaster for building facades
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Results: Mean yearly sun duration [h]
First large coverage solar cadaster for building facades
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Technological Outlook More detailed insolation analysis of single buildings
Calculation of heating input into buildings
First large coverage solar cadaster for building facades
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Technological Outlook More detailed insolation analysis of single buildings
Calculation of heating input into buildings
First large coverage solar cadaster for building facades
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Contact
Laserdata GmbH Frederic Petrini-Monteferri
Technikerstr. 21a 6020 Innsbruck
www.laserdata.at [email protected]
First large coverage solar cadaster for building facades using LiDAR data and City Models