DESIGN COOLER CITIES

 

Global warming and overheating cities are big issues
We advice on how to build cooler cities with advanced numerical technologies
Less heat, more energy saving, more comfort and more social cohesion
 

Presentation video

 

About us

 
ECOTEN is an engineering consultancy firm working on providing energy efficients solutions for the built environment. Our activities range from the building scale to the city scale. Among other activities, we concentrate on urban comfort and the problem of urban heat islands.
 
BREEAM / LEED
LCA / LCC
 
GREEN ARCHITECTURE
 
URBAN COMFORT
 
SMART CITY
 
 
 
 

Background

 
Urban heat island is characterized by higher temperatures in cities as compared to the surrounding areas, notably because of their material constitution and human activities.
 
This problem is becoming urgent due to number of inhabitants in city which is increasing and due to the global warming. Heat waves will be multiply, causing more discomfort, health risk and power consumption.
 
 

Identify

 
We create thermal map from Earth observation satellites data. It displays over an all city the temperature gradients prevailing. It allow to identify the hot and cold regions of a city:

Cold ones are suitable for vulnerable people facilities, as kindergarten and retirement house.

Hot are not, and should be renovated with urban heat island mitigation purpose.

Our clients are municipalities which are looking for an easy way to visualize temperature in their territory, in order to inform urban development decisions. We provide city thermal maps in hight definition.
 
 
 

MITIGATION

 
There are several development strategies which can be employed to mitigate the urban microclimate (such as adding water or vegetation, changing buiding and ground colours for lighter, using innovative material, etc.). But each neighbourhood reacts differently to these strategies due to the complexities of physical phenomena involved.

At ECOTEN, with the urban microclimate simuation, for a given neighborhood we assess different urban development scenarios and their impacts on the outdoor comfort.
We determine for our clients the optimal urban development scenario to reduce temperature during summer time and improve outdoor comfort.
Urban development are proposed by our clients, our partners or ourselves. We assess many urban variation, affecting all the aspect of the urban microclimate.
We provide our clients repport with analysis, dynamics maps, graphics and videos presenting the results. Our services are efficient decision-making tools.
 

DETAILED SERVICES

 
OUTDOOR COMFORT ANALYSIS

Further the air temperature, we calculate the Universal Thermal Climate Index (UTCI).
It takes into account all component of climatic comfort and their interactions. It is a quantitativ, qualitativ and easy-to-read way to assess outdoor comfort.
 
 
 
SOLAR FLUX ANALYSIS

We evaluate the solar radiation
(direct, diffus and reflected) received by every part of the modeled urban area, for each hour, and provide dynamic insolation maps. Furthermore, on client request, we study special days like solstices.
 
WIND ANALYSIS

We simulate the wind flux in the urban area studied and take into account their impacts on outdoor comfort. We study natural ventilation potential of new constructions and prevent potential excessive wind speed. We conduct, wind comfort and safety assessment throughout the year.
 
 
 
ENERGY CONSUMPTION OF BUILDINGS

During hot season, the electricity consumption due to air conditioning is a serious issue. The building shape designs and the urban microclimate are significant factors in this. We calculate their influence on the cooling needs of buildings and propose energy efficient building design.
 
RENEWABLE ENERGY PRODUCTION

We simulate solar radiations and the wind fluxs on the studied urban area throughout the year and then calculate the potential energy productions of:
- Photovoltaic panels of each roof of the urban area;
- Verticale wind turbines, depending of their precise locations
 
 
 
CLIMATE CHANGE IMPACT

The Intergovernmental Panel for Climate Change (IPCC) publish scenarios of the evolution of global temperature until the end of the 21th century. Applied on local weather data, those scenarios allows us to assess the climate change impacts, on the urban area studied.
 
SOLENE-microclimat

We operate our simulations with the calculation engine called SOLENE-microclimat. It is developed by the French research laboratory called CRENAU for over 10 years. It combines thermo-radiative model, CFD model and thermal model for buildings. We cooperate with the researchers to improve it and we developt engineering tools.
 
 
 

FOR YOUR NEEDS

 
We work with actors of sustainable developments:

CITY OFFICIALS AND URBAN PLANNERS

Get optimum urban developments scenarios to decrease temperature in summer time and increase comfort in public spaces of new neighborhoods and renovated ones.

ARCHITECTS AND URBAN DESIGNERS

Test the efficiency of your urban development projects, regarding outdoor comfort and electric consumption of buildings, and highlight their impacts.

ENGINEERS AND MANUFACTURERS

Demonstrate the effect of your innovative material or installation, to mitigate the urban heat island, to your potentials clients.

ELECTRICITY PROVIDERS

Effects of changes in the built environment on cooling demand.

ENGINEERING CONSULTANTS

Subcontract urban microclimate studies and wind flux (CFD) studies
 

FEEDBACKS

 
“This kind of modelling will be very useful for the work we are doing in performance assessment on small urban areas.”

Nils Larsson, Executive Director, International Initiative
for a Sustainable Built Environment (iiSBE)
 
 
 
 
“Very efficient tool, could integrate our global numerical city modeling program.”

Boguslaw Witkowski, Founder of Town Planning Design
and Architecture- Witkowski (TPDA- Witkowski
 
 
 

Contact

U Zvonařky 994/15, 120 00 Prague 2, Czech Republic
+420 736 630 021
Dr. Jiří Tencar
info@urban-comfort.eu
www.ecoten.cz