How now looks first Danish carbon-neutral buildings?

How now looks first Danish carbon-neutral buildings?

Automatizirani sistem uz pomoć senzora mjeri razinu svjetla i pali LED rasvjetu ili navlači sjenila. 76 m2 fotonaponskih ćelija i panela na krovu pokriva potrebe za električnom energijom i toplom vodom...

Carbon-neutral building today are no longer a novelty. In the near future they will be standard in new construction. But first remember. Denmark will certainly remember his first Experimental carbon-neutral public building which was built in 2009 in Copenhagen. The building still looks impressive, especially compared to the traditional university buildings in the neighborhood. But 7 years ago, when the expert team traced the path towards sustainable architecture, Green Lighthouse has been a symbol of revolutionary technological achievements in the service of sustainability. Although many technological solutions encountered for the first time, the building was completed in just nine months.

Green Lighthouse is now home Information Center of Natural Sciences Faculty of Copenhagen and the center for innovation and entrepreneurship. Also, it is a must-see tourist attraction, because it represents a kind of showroom sustainable technologies and smart design that Denmark leads. In the first three years of existence, it was visited by 15,000 tourists. Among them, former Russian President Dmitry Medvedev and Chinese minister of trade and commerce with his numerous delegation.

Green conical buildings pitched roof is designed to absorb the maximum and take advantage of solar radiation. 76 m2 of photovoltaic cells and panels on the roof covers the needs of the building’s electricity and hot water. Velux skylights leak sunlight in the circular central staircase and to the office space on the ground floor. Skylights also play an important role in ventilation, and cooling the building. On all sides, the facade windows of various sizes daylight comes into office spaces and open, spacious circular staircase. In the summer months this warming is not just desirable, but then the windows automatically go down blinds that react to the movement of the sun. While much emphasis is placed on the optimization of energy consumption for heating, cooling and ventilation systems, users of the building are not captured automated systems that they control the temperature, humidity and the amount of light, but can be manually adjusted to the room feel comfortable.

It is this freedom of temperature control and natural ventilation one of the reasons why the energy consumption after the first year of use was twice as high as it is provided calculations. Instead of 30 kWh / m2 per year, the building had a consumption of about 60 kWh / m2 per year. The reason to this much difference between estimated and actual spending is the way the building. For example, users are winter adjust the temperature to 24 ° C instead of 22 ° C as it was estimated in the calculations. Also, in the area to stay longer than anticipated 8 hours, increasing power consumption. Only in the first three years the building was entered more than 15,000 people, and with each of their entry and exit out to the heat. “For so much interest visitors not really count,” explained Lone Feifer from VELUX.

Consumption and production of electricity, air changes, humidity and other parameters that affect a comfortable microclimate, can be monitored on a daily, monthly or annual basis. The automated system with sensors measure the level of light in space and consequently fell artificial LED lighting or, if necessary, pulls the blinds. The system can be reprogrammed according to the real needs of users of the building. If the skylights closed, the need for artificial lighting was even four times higher.

The interior is very airy and light, which is good for productivity, but bad for the service of cleaning the sun lights up the slightest impurity. The building as it is in harmony with its occupants and adjusts them to make it feel comfortable.

Since 2009, the technology has significantly improved, so today was a logical some more modern solutions, and the construction would be much cheaper than it was 7 years ago. But Green Lighthouse dealt the direction of development of modern architecture, which is good for a man so much and for the environment, thus fully justified its name – Green lighthouse.

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