Contractor

Name : BaityKool Team

Contact : Phiippe Lagiere : philippe.lagiere @u-bordeaux.fr, France

Construction Manager

Name : BaityKool Team

Contact : Ferran Yusta Garcia, ferran.yusta@bordeaux.archi.fr, France

Stakeholders

Function : Designer

Kaïs Bhouri
Bhouri.kaïs@gmail.com
Architect

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Function : Designer

Kenza CHRAIBI
chraibi.sdmebordeaux @gmail.com
Architect

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Function : Construction Manager

Romain VAROQUEAUX
varoqueaux.sdmebordeaux @gmail.com
Project Manager Site

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Function : Designer

Myriame ALIOUALLA
myriame.alioualla@gmail.com
Architect

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Function : Environmental consultancy

Dorian MANSON
manson.sdmebordeaux@gmail.com
Project Manager Systems Engineer

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Function : Construction Manager

Lola FLOHIC
flohic.sdmebordeaux@gmail.com
Architect

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Function : Contractor representative

Denis BRUNEAU
denis.bruneau@bordeaux.archi.fr
Project Coordinator Professor ENSAP Bordeaux

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Function : Contractor representative

Alain SEMPEY
alain.sempey@u-bordeaux.fr
Project Coordinator Professor Assistant IUT Génie Civil Bordeaux

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Function : Contractor representative

Saed RAJI
sraji@nobatek.inef4.com
Project Coordinator Professional Nobatek Inef 4

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Function : Designer

Faustine Fournol
faustine.fournol@bordeaux.archi.fr
Architect

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Function : Designer

Emma Penot
emma.penot@bordeaux.archi.fr
Architect

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Function : Construction Manager

Matis Renaudie
matis.renaudie@ensam.eu
Engineer

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Function : Construction Manager

Octave Poujol
octave.poujol@ensam.eu
Engineer

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Function : Thermal consultancy agency

Nicolas Gaston
nicolas.gaston@etu.u-bordeaux.fr
Engineer

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Function : Other consultancy agency

Bertrand Canigiani
b.canigiani@gmail.com
Aquaponic System

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Function : Other consultancy agency

Contracting method

Other methods

Owner approach of sustainability

One of the best advantages of our prototype is its ability to adapt to as many functions as we need to create an almost self-sufficient centrality. By creating multi-storey options, while keeping a globally low-rise built environment, we allow more density that not only gives opportunity to more people to live within this community, but it also provides qualitative shaded streets where the inhabitants, as well as the communities’ neighbours, can walk, meet and interact. In fact, considering the strong structure of our prototype, we can easily stack it on several levels without the need of renewing structural calculations.

With Baitykool, we aspire to create sustainable neighborhoods that can help fill the gaps of the existing urban fabric of Dubai, using the following principles as our guidelines :

     - Human scale neighbourhood
     - Low-rise buildings
     - Building within density / within the city
     - Taking advantage of the public transport system
     - Develop in a mixed program / mixed use neighborhood
     - Provide proximity to services / avoid long single commute
     - Invest empty / abandoned lots / without designation

This prototype will be transfer in susnainable city in Dubaï. The goal of this transfert is to make this competition prototype a real habitable laboratory. This living laboratory will receive public and researcher during tree years in order to study the differents concepts of BaityKool and different way of living in hot climat.

Architectural description

The project aims to design, implement and test a prototype of 80m2 adapted to the Middle-East climate.
Our dwelling is designed in "U" shape, with a mineral aspect outside and a vegetal aspect inside.We wish to display a proposal of a coliving and coworking house at the same time with a lot of innovations, and fully adapted to such a hot climate like in Dubai.  
Design to protect our green living heart from outdoor warm climate. In respect with traditionnal ways of living of UAE. 

 

Solar Canopy -

To correlate solar production with energy consumption, we seek to produce throughout the day. For this, we develop a pergola and photovoltaïc clading. The pergola solar are inclined towards the South to capture the maximum amount of sunshine while the integreted solar panels in East and West cladding produce energy in the morning and at the end of the day. At night, the U-shape of the habitat improves natural ventilation : the fresh air of the patio expels warm air from the habitat to the outside. Indeed, in Dubaï, the prevailing North wind rush into the patio. We then control the flow of air in the home, in control with home automation, openings and closings of pergola and windows.

Still in the idea of consuming less energy, we produce the cold of the home by coupling a central processing unit with a passive control system, integrated in the roof : the radiative sky cooling. The physical principe is simple : the heat of the habitat is radiated towards the sky which has a temperature lower than the ambient air.

A biologic ecosystem for a new living house concept -

In Dubaï, which is a city buit on the desert, each inhabitant consumes 500 liters of water a day. In our project we took to heat the safeguard of every drop of water to ensure the comfort of the inhabitants while respecting the environment? We have created a real ecosystem that combines innovation with ancestral practrices of the Islamis garden.

BaityKool will serve as a demonstrator for a hydraulic integrator that allows through a dedicated application, the management and monitoring of water consumption.

After its first use, our drop of water, turned gray, continues its way to be recycled thanks to a system that couples for the first time a Lulbrifilter and a UV treatment. These are two biological filters. The first one is composed of several floors including earthworms an dbacteria. The second one uses the principe of photosynthesis to transform the last bacteria into biomass. The coupling of these two traetment allows us to obtain a healthy water that meets the agricultural irrigation standards. IT will be routed to the heart of the house : the Patio. Our drop of water will be able to take two different paths :

- First path will lead it to the terraces of vegetation

- The second path will lead it to aquaponics system

 

The Green Roof - 

This filtered water gets to be reused for vegetables and local plants, which are situated on the pergola, on the side walls of the patio and on the roof. Different aspects have been taken into account to choose the right plants. First, we selected local plants as they are the most suitable ones for the climate. Secondly, we chose plants that do not have important water needs as well as succulents for the roof, given their exposure to harsh conditions, while we chose climbing plants that need water for the walls and the pergola. This way they release water in the air and refresh it thus creating a microclimate.

The roof shape itself is thought to take advantage of each plants’ features. With the stair-step shaped roof, the upper exterior plants protect the lower interior ones.

 

The Hight Performance Wall Composition -

The Middle East is known for its subtropical desert climate, with very pleasant warm winters, and very hot summers, in which the combination of temperature and variable humidity makes the heat really oppressive. Because of this climate, we thought about a composite wall made up of several layers. This composition allows good insulation for the house’s interior and good comfort temperature.

The main focus while choosing these materials for our project is the thermal aspect of the materials, in order to provide the inhabitants with the best comfort. The thermal efficiency of the house also reduces its energy consumption, making it eco-friendly energy wise.

The main challenge of BaityKool is : "How to build a self-sustaining, eco-responsible habita in the extreme hot conditions of the Middle East?". Our strong concept was very naturally to protect the house from outside environment and to make an introverted project, in the manner of traditional medina houses. The outer envelope is closed, mineral, arid, monolithic. The panels of the façade respond to the idea of a monolithic façade but also to a reinterpretation of a classical element of Middle Eastern architecture, mashrabiya. Thus, even behind the openings comfort and privacy are preserved.

The double skin of our multi-layer wall is a system that allows us to reach a thermal comfort thanks to the buffer zone that it creates. It is completed by a reflective film that acts as a vapor barrier, sticked on the external facades on the building. It reflects solar rays and reduce the quantity of heat that gets inside the house.

 

Innovative construction Mode -

Baitykool is an exceptional project in more than one way. Designing it and achieving it from several countries was a unique challenge to take up for our teams. The prototype has been prefabricated in France in various cities and then shipped in containers by land and maritime ways to Amity University Campus in Dubai. We directly assembled the house there and then transported it in three blocks by exceptional convoy to the Solar Park. We refined the project and construction methods to get the better cost optimization on several levels: construction time, gear rental and transport.

The project was thought to anticipate all phases of its realization. Materials, assembly techniques and the total weight of our shipments meet various requirements such as logistics, energy performances and architecture of our project. Everything is connected. We chose a wooden frame, associated with CLT walls (Cross-Laminated Timber), as the main structure of the house, with elements of roofing and floor in wooden boxes, a system that allows an easy prefabrication while preserving the building’s lightness. The facades made of concrete lace come to dress all the structure with a mineral appearance reminiscent of the mashrabiya of the Middle East. Placed in the middle of the desert, the project evokes an immovable rock enclosing an oasis, which contrasts with the nomadic nature of its construction.

For this exceptional project which has run through many kilometers, the wooden structure quickly became the best solution. It was put in place quickly and subjected to a number of loadings (green roof, UHPFRC in facade, systems on the roof, etc.) . The whole structure is broken down into isolated boxes, manufactured in France (CILC in Poitiers) and shipped by container to Dubai. Once on site, these elements where easily assembled thanks to suitable lifting gear.

The roof is made of structural elements and OSB (Oriented Strand Boards) supporting vegetation tanks on the sloping part, but also the Radiative Sky Cooling system and the pergola with its retractable solar blades.

The supporting walls are made of 60mm CLT panels and directly support the roof boxes. A classic framework creates the extra thickness, which allows insulation panels to be integrated and creates the roof acroterion, on which the UHPFC cladding rests. The whole system forms a very resistant and rigid box.

On the same principle as the roof boxes, the floors consist of solid wood joists, closed by the same OSB as the roof. They are fixed, at the end of joists, by metal dovetails with longrins.

Energy consumption

• Primary energy need : 49,00 kWhpe/m².year
• Primary energy need for standard building : 298,00 kWhpe/m².year

Calculation method : RT 2012

CEEB : 0.0004

• Final Energy : 49,00 kWhfe/m².year
Breakdown for energy consumption :

BaityKool is Net-Zero-Energy NZED-House.
In One year we produce 14023 kWh which is produce 79% by the solar coverage rate.
Energy needs :
Heating : 0KWh / Cooling : 14071KWh / Lighting : 572KWh / Ventilation : 610 KWh / hot water : 366KWh

Envelope performance

• Envelope U-Value : 0,32 W.m^-2.K^-1
More information :

the total annual production of the PV system including the PV field on the pergola (mobile roof), the Est façade, the West façade and the South Façade is 14MWh.We use UHPC (Ultra Hight Performance fiber Concret) at the outside surface to protect our prototype while allowing some light to pass through holes to ensure visual comfort during the day, and reduce the use of lightning. Moreover, a ventilated cavity behind the UHPC panel is planned to cool down the structural wall. On the other hand, raw earth are used from inside to regulate the hygrometry. Insulation are placed in the middle of these two components (UHPC and Raw earth) in order to increase as much as possible the thermal resistance of the structural walls. In addition, all the windows are double glazed type to limit the heat gain from the outside during periods of high temperatures.

Systems

Heating system :
• Heat pump
• Radiant ceiling
• Solar thermal
Hot water system :
• Heat pump
• Solar Thermal
Cooling system :
• Roof-top
• Solar cooling
• Radiant ceiling
Ventilation system :
• Natural ventilation
• Nocturnal Over ventilation
• Double flow heat exchanger
Renewable systems :
• Solar photovoltaic
• Heat pump
• Renewable energy production : 100,00 %

Product

Aquaponic system
Arkituria
Bertrand Canigiani : b.canigiani@gmail.com

Product category : Structural work / Passive system

The aquaponic system is conceived in order to be as autonomous as possible. To do so, we designed a module that can be integrated in any building. In our case, the system is composed of a 830L fish tank and an additional tank. Those tanks are separated by 18 ZipGrow towers, an innovative vertical system to grow plants and vegetables. These vertical farms can produce around 300 kg of edible plants per year, thus representing the average green consumption of four people. The whole system, made of the fish tank and the ZipGrow towers, is embedded into the separating wall between the patio area and the corridor.

Construction and exploitation costs

• Global cost : 600 000,00 €
• Renewable energy systems cost : 231 000,00 €

Global cost/Dwelling : 60000

• Cost of studies : 32 000 €
• Total cost of the building : 600 000 €
• Subsidies : 510 000 €
Additional information on costs :

Total First Design Studies : Communication, Travel, Structure 32000€Total Major Work : 103600€Total Inside Arrangement : 31000€Total Outside Arrangement : Pergola, Terrace, Claustra : 18000€Total systèms : 127400€Total Communication + Marketing : 10000€Total Student Team Manpower : 130000€Total Management : 46000€Total Project Cost : 600000€

Urban environment

 

During two years, this prototype was kept at the Solar Decathlon until 2020. Today we are working on this prototype in order to transfer this projet in the sustainable city in Dubaï. It will be transfert on june 2020. The goal of this transfert is to make this competition prototype a real habitable laboratory. This living laboratory will receive public and researcher during tree years in order to study the differents concepts of BaityKool and different way of living in hot climat.

Land plot area

100,00 m²

Built-up area

80,00 %

Green space

20,00

Parking spaces

commun parking with electrical terminal

Building Environmental Quality

• Building flexibility
• comfort (visual, olfactive, thermal)
• water management
• energy efficiency
• renewable energies
• building end of life management
• building process
• products and materials