Council House 2, the administration building of the city of Melbourne, is the first building in the country to receive the highest 6-star rating on Australia’s Green Star Environmental Credits.
Every aspect of the building was examined and reconsidered from first principles, and new lessons were developed based on the desire to be as faithful as possible to the basic “laws of nature”. The design philosophy is to develop an appropriate architectural response that directly and honestly expresses the relationship of biodynamic agriculture that nature uses in its own designs.
It affects the building’s architectural form and all the highly sophisticated engineering it contains. The structure of this building, its skin, bones, and intestines, has been subject to rigorous reassessment to comply with natural processes. It acknowledges the reality that as a society we need to develop more sustainable structures in order to live and work as seeds.
The public face of Council House 2 is a high façade overlooking Swanston Street, one of Melbourne’s public boulevards. It is made entirely of vertical wooden slats that cover a completely glazed wall. These slats rotate vertically and open and close depending on the time of day and the angle of the sun.
Therefore, the façade is animated according to external conditions. It is at best biomimetic: the building moves and revives according to the conditions around it. The crown of the building contains another element that properly announces the design philosophy. Six giant bright yellow wind turbines are a good visual complement to how the air travels inside CH2 and how this building utilizes the wind, another powerful natural resource. Declare.
Like Eastgate, CH2 is cooled by managing the temperature difference between night and day air in a timely manner. In this case, the entire side of the building is opened for direct air intake by automatic shutters of recycled wood (left).
This “night cleaning” allows you to open warm air directly from your office or store space and cool the concrete lumps that stick out overhead. Hot air rises to the ceiling opening, travels vertically through the hollow floor, and finally to the ceiling vents. This passive treatment is sufficient to keep the space comfortable for part of the day. Cold air rises from the floor all day long.
Council House 2 also uses another liquid temperature gradient, water, to regulate the air inside the building. First, the water is “pulled” out of the city’s sewage, filtered three times, then flushes the toilet, aquatic plants and begins to move to regulate the air. AC water flows outside the structure through five 15-meter “shower towers” (bottom), producing evaporatively cooled air and directing it to lower commercial spaces.
The remaining water is sent to underground storage where it is cooled by a phase changer and distributed as needed. The phase changer consists of 10,000 stainless steel balls containing salt with a high freezing point (15 ° C), which is frozen at night and disperses water during the day, similar to cooling a drink as the freezing point melts. Used for This fresh cooling water is pumped from the basement to the cooled beams at all levels of the building. These bundles are copper tubes arranged to allow the air to cool in the second half of the day when the effects of night cleaning have disappeared.
The building also uses heat mass to absorb heat, reduces heat absorption through a strategic arrangement of glazing, and produces energy and heat through solar and solar panels and gas-fired power plants. It also contains the same amount of plant leaf area on the premises (replaces what was theoretically lost), oxygenating the air inside and outside. The building undergoes a fresh air exchange every 30 minutes, and owners claim that a 10.9% increase in employee productivity is the biggest repair of the $ 11 million (Australia) ventilation system. increase. Productivity gains are estimated at over $ 2 million (AUD) per year in staff value. This means that your investment Council House 2 can pay off in 5-6 years.