Tohu: Chapiteau des Arts

Transcription

1 ARCH 226: Case Study in Canadian Sustainable Design Tohu: Chapiteau des Arts Consortium: Schème consultants, Jacques Plante Architect and Jodoin Lamarre Pratte Montreal, Quebec Sarah Khalid Rebecca Lai Elaine Lui Ping Pai November 2004 Pictures from S. A. Lorenzo Martoni, Cyry Assoc.ppt Background from M. Blouin Scheme Arch.ppt

2 Function Houses the international headquarters of Cirque du Soleil Landmarks Montreal as a world leader of the circus arts Serves as a circus school, theatre, gallery and convention centre Actively involved in the Saint- Michael Environmental Complex (CESM) revitalization and development program Improves the St. Michael district Pictures from and from TOHU - Développement durable.pdf, respectively

3 Siting Picture from M. Blouin Scheme Arch.ppt

4 Structure Primarily constructed out of concrete, steel and glass Concrete panels are low cost, malleable, easy to install, more fire resistant, more effective for sound proofing. barely require maintenance; have a long life expectancy are used to retain the structure Many structural components are recycled: steel beams from the old Angus factory, grand stairway made from old La Round bumper cars, rusted CP rails, pieces from an abandoned crane and metal panels from Expo 67 Right: from M. Blouin Scheme Arch.ppt Left: from TOHU - Développement durable.pdf

5 Materiality Picture from S. A. Lorenzo Martoni, Cyry Assoc.ppt

6 Heating Passive Geothermics Co-generating, hot water heating system makes heating costs 20% lower Gazmont extracts biogas from subsoil and converts it into energy Combustion of biogas boils water which transforms into steam, which turns a large turbine to generate electricity When steam is cooled, part of the hot water is routed to the Tohu pavilion Water circulates throughout a network of ducts embedded in the floor of the building This method avoids production of greenhouse effect gases

7 Heating Trombe wall It is sized to contribute in practically reducing heating required to almost nil on a clear February day. Wall can accommodate most of the theatre s heating needs; additional heating only needed during shows on cold nights Annual energy savings = approx kW/hr Picture from S. A. Lorenzo Martoni, Cyry Assoc.ppt

8 Cooling Ice tray Massive ice-tray accumulating up to pounds of ice lies under the site in the Canadian Well The ice tray is used primarily as a reserve of freshness for the periods of demands. Picture from

9 Ventilation Tohu uses natural ventilation by convection and huge amounts of ice for air conditioning Stack effect is assisted by two chimneys and the sun: In summer, hot air rises and collects in a vortex near the ceiling Hot air is forced out two 1.2m diameter chimneys located 0.6m apart while a system of ventilation ducts circulate cool air With no interior gains, natural movement of air cools and heats the building, maintaining the interior environment at 23 degrees Celsius Process consumes 70% less energy than a conventional system Does not produce greenhouse effect

10 Ventilation Air neuf et frais = New and fresh air Air vicié et chaud = Foul and hot air Glace = Ice Gradins = Steps Diagram by Dr. Andreas K. Athienitis, ing

11 Heat Exchange and Ductwork Location North-East elevation North-East section Pictures from M. Blouin Scheme Arch.ppt

12 Heat Exchange and Ductwork Location North-West elevation South-West elevation Pictures from M. Blouin Scheme Arch.ppt

13 Interior Environment

14 Indoor Office Temperature Picture from TOHU - Développement durable.pdf

15 Electrical Consumption of a Typical Room Reduction of the electrical consumption is 28% Graph from TOHU - Développement durable.pdf

16 External Environment Green roof reduces building s heat gain during summer; enhances air quality Large basin collects rainwater: Due to it, Tohu has a natural system, eliminating the need to construct a traditional underground retention system of massive concrete ducts. External lighting system uses thousands of LED bulbs; reduces light pollution

17 Minimal Light Pollution-lighting Picture from TOHU - Développement durable.pdf

18 Daylighting Summer Solstice at 43 degrees latitude Winter Solstice at 43 degrees latitude

19 Daylighting Summer Solstice Window openings reflect seasonal changes in the sun path to balance solar heat gain. Offices located on North side to utilize diffuse lighting South elevations limit solar heat gain Southwest openings limit light penetration by overhangs

20 Daylighting Winter Solstice Window openings reflect seasonal changes in the sun path to balance the solar heat gain. Minimal openings facing south. North Large openings where light is most limited. Southwest openings admit low angle light in the winter.

21 Daylighting Daylighting is beneficial due to the fact that the heating and cooling systems use passive geothermics. Glass curtain walls mainly exposed on the north side or blocked by the cylindrical area South side has less openings This allows for better control of the heat that is generated by the sun and more control over the interior conditions of the building.

22 LEED Scorecard Sustainable Sites 8/14 Goals: To reduce the environmental impact of a building on its site To direct the development in urban sectors with existing infrastructures, thus protecting the parks and their resources To reduce heat islands to minimize their impact on the microclimate and human and faunal habitats To reduce car pollution

23 LEED Scorecard Water Efficiency 4/5 Goals: To limit or eliminate the use of drinking water for irrigation To reduce the production of waste water To reduce water consumption

24 LEED Scorecard Energy & Atmosphere 14/17 Goals: To obtain levels of energy performance higher than the set standards To encourage the use of the use of renewable technologies To eliminate the use of CFC to reduce the degradation of the ozone layer

25 LEED Scorecard Materials & Resources 3/13 Goals: Use building materials made of recycled matter Reduce construction waste Reduce the demand for virgin materials Use local materials to reduce the impact of transportation on the environment

26 LEED Scorecard Indoor Environmental Quality 10/15 Goals: To provide a good distribution of air To reduce quantity of contaminants of interior air To provide control of systems (temperature, ventilation and light) so occupants can manage comfort conditions To provide a connection between the interior and exterior spaces by the introduction of natural light

27 LEED Scorecard Innovation & Design Process 5/5 Goal: To reach exceptional performances that go beyond requirements established by LEED TOTAL = 44/69: LEED Gold Certification