FACTOR 20: A MULTIPLYING METHOD FOR DIVIDING BY 20 THE CARBON AND ENERGY FOOTPRINT OF CITIES: THE URBAN MORPHOLOGY FACTOR

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FACTOR 20: A MULTIPLYING METHOD FOR DIVIDING BY 20 THE CARBON AND ENERGY FOOTPRINT OF CITIES: THE URBAN MORPHOLOGY FACTOR

Dominik.Uhe
Keywords:  energy,  carbon  emissions,  urban  morphology,  urban  metabolism,  cities  ecological  footprints, climate change

Summary
The  sustainable  construction  movement  concentrates  mainly  on  the  improvement  of  building  systems
(factor 2)  and  not  enough  on  people  behaviour  (factor2)  and  on  urban  morphologies  (factor2)  and
architectural (factor 2.5) bioclimatic and energy efficient forms. Working on all the factors, we can reach a
factor 20. This paper concentrates mainly on the often-overlooked factor 2 of urban morphology.
The concept of passive and non-passive zones quantifies the potential of each part of a building to use
daylight, sunlight and natural ventilation. By using the passive zone concept and a set of indicators, such as
density, rugosity, porosity, sinuosity, occlusivity, compacity, contiguity, solar admittance and mineralization,
and by using an environmental oriented conceptual model of urban fabric, the paper presents results in Paris
case of a new method, which allows a simplified diagnosis of urban carbon and energy footprints.
This approach is useful for comparing the bioclimatic and energy efficiency of different urban morphologies,
for designing new urban developments, and for public urban policies wishing to know the most powerful and
priority actions to divide by 20 the present energy and carbon footprints of cities.

Map of the energy consumption for heating in Paris

Map of the CO 2  emissions for heating in Paris in kgC/inhabitant/year (source APUR), the affluent neighbourhoods are over emitting carbon and spend more than their carbon quota only for their heating.


Further information:
http://www.ccifc.org/index.php/fre/content/download/1470/19204/file/Factor%2020,%20the%20Urban%20Morphology%20Factor%20-%20Serge%20Salat%20(21%20May%202008).pdf.
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Re: FACTOR 20: A MULTIPLYING METHOD FOR DIVIDING BY 20 THE CARBON AND ENERGY FOOTPRINT OF CITIES: THE URBAN MORPHOLOGY FACTOR

angela saade
Administrateur
Dear Dominik,

Thank you for this interesting paper.
Is it easy to apply the methodology on other cities? Are you planning to develop a software that could analyse urban texture of a city?

Thank you,

Angela

Angela SAADE
Chargée de mission Photovoltaïque & Programmes Européens
European Programmes & Energy Consultant


HESPUL énergies renouvelables & efficacité énergétique
114 bd du 11 novembre
69 100 Villeurbanne
Tel : +33 (0)4 37 47 80 90
Fax : +33 (0)4 37 47 80 99
http://www.hespul.org


Le 11/01/12 09:16, Dominik.Uhe [via Solar urban planning] a écrit :
Keywords:  energy,  carbon  emissions,  urban  morphology,  urban  metabolism,  cities  ecological  footprints, climate change

Summary
The  sustainable  construction  movement  concentrates  mainly  on  the  improvement  of  building  systems
(factor 2)  and  not  enough  on  people  behaviour  (factor2)  and  on  urban  morphologies  (factor2)  and
architectural (factor 2.5) bioclimatic and energy efficient forms. Working on all the factors, we can reach a
factor 20. This paper concentrates mainly on the often-overlooked factor 2 of urban morphology.
The concept of passive and non-passive zones quantifies the potential of each part of a building to use
daylight, sunlight and natural ventilation. By using the passive zone concept and a set of indicators, such as
density, rugosity, porosity, sinuosity, occlusivity, compacity, contiguity, solar admittance and mineralization,
and by using an environmental oriented conceptual model of urban fabric, the paper presents results in Paris
case of a new method, which allows a simplified diagnosis of urban carbon and energy footprints.
This approach is useful for comparing the bioclimatic and energy efficiency of different urban morphologies,
for designing new urban developments, and for public urban policies wishing to know the most powerful and
priority actions to divide by 20 the present energy and carbon footprints of cities.

Map of the energy consumption for heating in Paris

Map of the CO 2 emissions for heating in Paris in
        kgC/inhabitant/year (source APUR), the affluent neighbourhoods
        are over emitting carbon and spend more than their carbon quota
        only for their heating.


Further information:
http://www.ccifc.org/index.php/fre/content/download/1470/19204/file/Factor%2020,%20the%20Urban%20Morphology%20Factor%20-%20Serge%20Salat%20(21%20May%202008).pdf.


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