â€˘ New, efficient gas boilers installed on the roof at 66 Portland Place, controlled to
deliver heat only where needed saving 424 tonnes of carbon each year http://www.architecture.com/RIBAVenues/ReducingourCarbonFootprint.aspx
Photo 1. The diagram above shows the stack-effect ventilation through the RIBA building. the cool air is entered through openings below, forcing the interior heat to rise and spread around the other floors of the building. This makes the entrance floor cooler whilst the other floors gets warmer
Photo 2. This photo is observed and drawn from the second floor. The windows are outlined red as they are the main source of natural ventilation. The height of the windows enables great amounts of daylight entering the building. So the major artificial lights are turned off when the daylight is highly visible which then reduces the heat gain from the artificial lights. This is especially beneficial in summer because the building will not rely on mechanical cooling systems to cool down the building and save on energy which contributes to Eco-environment.
Photo 3. When i visited the building for second time, i analysed the building of where the heating systems and ventilators are. Heating systems were not visible anywhere except the library which had radiators on the edges of the book cases. On the first floor ceiling were decorated gaps which i assumed are the ventilators as there were no other vents visible. The major ventilation system for the building are the windows as shown in the photo above. There is also a high possibility that the building uses underfloor heating system to keep the building warming as some areas of the floor were very warm.
Photo 4. Heat is gained in space from people, lighting, computers etc. As people spend longer time in the library than other places of the building; radiators are placed on the round edges of the book shelves to keep the space warm in winter. The library also has large windows above to circulate the air inside and cool the library in warmer periods which makes it a comfortable place to do research. The windows would generally be closed because of the noise pollution outside. This would slow the cooling in warmer times however as RIBA prefers to send invoices electronically, printers are not used which means no heat is gained from the printer appliance.
Photo 5. This ventilator is located on the top of the roof. Major heats are escaped from this ventilator
Photo 6. The transfer grille is placed above the door to enter air into the building. Its' another purpose is to stop smoke or fire from spreading at the cause of fire.
Photo 7. The pivot windows are suitable for all seasons as it is adjustable and be positioned depending on the season as shown in the diagram
Diagram above Referenced from: http://www.resilientcity.org/index.cfm? id=23462&modeX=BlogID&modeXval=D24195D3-1EC9-420FAA2582CAAD5B39A2&BlogID=D24195D3-1EC9-420F-AA2582CAAD5B39A2
Photo 8. There is an open window on the fifth floor to let the cool air get in and escape the warm air out.