Green Roofs

Green roofs are one of the most visible ways to build more sustainable, "green" buildings. A study conducted for Toronto, Canada estimated that the installation of green roofs on buildings could: reduce the heat island effect of urban areas by 1 to 2 degrees C, reduce smog alerts in cities by 5 to 10 percent, absorb CO2 emissions from automobiles and thus reduce green house gases, reduce the energy needs of buildings for heating and air conditioning, filter storm run-off and thus reduce water pollution, and expand recreational and open space in urban areas by creating roof-top gardens.

Natural Ventilation - to Vent Hot Air

Another method of sustainable green building design is to incorporate means of natural ventilation into a building to vent hot air in the summer time, and thus reduce the need for energy used for air conditioning.

Proposed Independence Station Building in Oregon - Green Design

The proposed Independence Station building claims that, when constructed, it will be the highest rated Platinum LEED (Leadership in Energy and Environmental Design) building in the world. It will include almost all of the various approaches to green building design (green roof, photovoltaic solar panels to generate electricity, passive solar hot water heating, geothermal heating and cooling, rainwater harvesting, etc.)

Greensburg, Kansas Arts Center - Platinum Green Building

The first LEED (leadership in Energy and Environmental Design) Platinum rated "green building" constructed in the state of Kansas is the Greensburg, Kansas Arts Center. Designed by the non-profit 804 Studio of the University of Kansas and constructed as part of the rebuilding of the town of Greensburg after it was devastated by a tornado, the building has 3 Kestrel wind turbines that produce 600 watts of electricity. In the basement is a Xantrec converter that transforms the electricity from DC to AC electricity that is either used to provide electricity for the building, is stored in a bank of 12 batteries for future use, or is sold to the city. The building also has 8 photovoltaic solar panels on the roof that also produce electricity. Finally, the building also has three 200-feet deep geothermal heating and cooling wells that draw cool 55 degree air from the ground in the summer and use the same 55 degree air for heating in the winter. The building exterior incoporates passive solar design in the form of specially designed tempered glass that is 10 times stronger than a car windshield that blocks UV rays while the building floor consists of 4 inches of concrete to absorb and retain heat in the winter. Skylights in the roof provide natural lighting while sensors automatically turn off the lights in the center if no one is in a room. The roof itself is a "green" roof covered with sedum, a succulent plant that helps to absorb UV rays and thus keep the building cool in the summer. Similarly, the soil medium helps to keep the building warm in the winter and filters the rainwater which is collected from the building in 1500 gallon cistern, with the rainwater then used to water the native buffalo grass lawn. To further promote sustainability, the building itself is insulated with a cellulose insulation made from recycled newspapers.

VERTICAL FARMING

Vertical Farming -- Another variation on a green building is known as "vertical farming." This is a new concept to build high-rise farms (i.e. food grown in specially designed high-rise buildings) so as to reduce the transportation costs of bring food from the countryside to cities. In the proposed building shown above, wind turbines are installed on top of the building to provide energy for the building. Instead of growing the plants in soil, the proposal is to grown the plants using aeroponics. This is an approach where plants are hung in the air and a fine spray containing water and nutrients is sprayed on the roots of the hanging plants. The proposal is to collect rainwater and to store it in water tanks to supply the water. After spraying the roots of the plants, the excess water is then collected and re-used.

Another variation on a green building is known as "vertical farming." This is a new concept to build high-rise farms (i.e. food grown in specially designed high-rise buildings) so as to reduce the transportation costs of bring food from the countryside to cities. In the proposed building shown above, wind turbines are installed on top of the building to provide energy for the building. Instead of growing the plants in soil, the proposal is to grown the plants using aeroponics. This is an approach where plants are hung in the air and a fine spray containing water and nutrients is sprayed on the roots of the hanging plants. The proposal is to collect rainwater and to store it in water tanks to supply the water. After spraying the roots of the plants, the excess water is then collected and re-used.

Another variation on a green building is known as "vertical farming." This is a new concept to build high-rise farms (i.e. food grown in specially designed high-rise buildings) so as to reduce the transportation costs of bring food from the countryside to cities. In the proposed building shown above, wind turbines are installed on top of the building to provide energy for the building. Instead of growing the plants in soil, the proposal is to grown the plants using aeroponics. This is an approach where plants are hung in the air and a fine spray containing water and nutrients is sprayed on the roots of the hanging plants. The proposal is to collect rainwater and to store it in water tanks to supply the water. After spraying the roots of the plants, the excess water is then collected and re-used.