Twelve wireless sensors were all it took to take control of the building at Østre Nesttunvei. Now the building, which houses fitness centre EVO Fitness, has been trimmed and energy use reduced by over 40 percent.
– In short, we now have full control over this part of the building. The measures we have taken have given us an energy reduction of over 40 percent on this installation, says Property Manager Operations at Zurhaar AS in Nesttun, Atle Skogstrand.
Immediately interested
Zurhaar AS is the largest property owner in Nesttun and also a significant operator in Norway and abroad. The company has properties in Bergen, Askøy, Bømlo, Fornebu, Krøderen, Tranås (Sweden), Lotz (Poland), Sanford Maine (USA) and Saltwell Park (Newcastle, UK). In total, the property company owns an area of around 170,000 square metres.
They are committed to reducing their carbon footprint and work daily on measures that can contribute to precisely that. One of those measures is better energy management of the buildings.
– We have a diverse property portfolio with a number of older buildings. That new technology can contribute to better management of these buildings is very exciting, says Property Director at Zurhaar AS, Tone Haugland.
– Not least, it is inspiring that this can deliver large energy savings — both for us as the landlord, but not least for our tenants, says Haugland.
Many low-hanging fruits
Around a year ago they invited Energy Control in for a meeting. They then agreed to run a pilot in one of the company’s buildings — a property with several tenants including a fitness centre. Use of the building therefore varies greatly throughout the day. They installed wireless sensors to collect data for greater insight into the indoor climate and energy use in the building.
– The sensors give us real-time data from the technical installations in the building. Based on this data we find the building’s heartbeat, which allows us to look for possible faults, says Skogstrand.
He explains that they quickly found several faults — faults that would have been very difficult to find without data from the sensors.
– The sensors have given us the opportunity to harvest several of the low-hanging fruits, says Skogstrand.
Manages itself
Zurhaar AS has now handed control of the ventilation in the premises over to the sensors. This means the wireless sensors manage the ventilation units up and down in accordance with the demand in the premises.
– The sensors measure the indoor climate, and if there are many people in the premises the ventilation is increased. If there are few people, the ventilation is automatically reduced. This and a number of other smaller measures mean we now use around 40 percent less energy in the premises than we did previously, says Skogstrand.
Haugland explains that they will be implementing similar measures in more of the company’s buildings.
– Many of our buildings have a similar potential to what we have achieved at Nesttun. We are therefore now drawing up a plan for which buildings are next in line, says Haugland.
A star example
Tommy Hagenes at Energy Control explains that the building in Nesttun is a typical building where simple measures and a few wireless sensors can achieve significant energy savings.
– There are a very large number of buildings like this around the country. Zurhaar already had a good energy system from Adaptic, but wanted to manage the building based on demand. With twelve wireless sensors, some energy meters and our own EC Dashboard, we took control of energy use and the indoor climate in the premises. When we account for outdoor temperature and other variables, we have achieved an energy reduction of around 40 percent, says Hagenes.
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