Kuggen. Ecopilot, energenious building automation system

12998
Last modified by the author on 27/08/2015 - 14:13

Renovation

  • Building Type : Office building < 28m
  • Construction Year : 2011
  • Delivery year : 2014
  • Address 1 - street : 412 96 GOTHENBURG, Sweden
  • Climate zone : [Dfc] Wet subarctic, cool summer, severe winter

  • Net Floor Area : 4 898 m2
  • Construction/refurbishment cost : 50 000 €
  • Number of Work station : 1 Work station
  • Cost/m2 : 10.21 €/m2

Proposed by :

  • Primary energy need
    37 kWhpe/m2.year
    (Calculation method : Primary energy needs )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building
KabonaAB

Kabona is a company which works with energenious energy building automation and the company’s head office is locatedin Borås, Sweden. Kabona was founded in 2001 and has long-standing and solidexperience, which has formed the basis of our innovative and energy smartproduct Ecopilot. Since 2012 Kabona has been owned by Investment AB Latourwhich is registered on the Stockholm Stock Exchange under Large Cap.

Project property Kuggen, Lindholmen Göteborg – independent evaluation of Ecopilot in amodern office building

The project’s aim is a thorough evaluation of special functions for integrated control of heating, cooling and ventilation, specifically adapted to utilise the building’s thermal inertia.Kabona refers to a long series of projects where Ecopilot has resulted inenergy savings of 25%, with retained or improved quality of the indoor climate. However, no independent evaluation of the system has been conducted yet, whichis the aim of this project.

About the building

The building Kuggen is an office building of 4,898 m2 divided on 5 floors and was put into operation in 2011. From the start, even before Ecopilot, the building had good energy performance and has been certified in accordance with the EU programme for energy-efficient building, Green Building.

Installation of the new superior control system, Ecopilot, was conducted on 27 August 2014 and this evaluation focused on how this has impacted the indoor environment, energy consumption and operation.

The building’s performance before Ecopilot

According to the energy statistics of 2013from Göteborg Energi, Kuggen’s energy consumption is 37 kWh/m2 peryear for heating (temperature corrected) and 9 kWh/m2 for districtcooling. In 2013 the consumption of property electricity amounted to 27 kWh/m2year and business electricity to 28 kWh/m2. The results of consumption before and after Ecopilot are presented under conclusion below.

Evaluation

The evaluation was performed by an independent party, CIT Energy Management AB, without links to the supplier of Ecopilot. In order to ensure correct installation and operation of the system,CIT collaborates with both Chalmersfastigheter and Kabona. This evaluationcovers six months (the time period September 2014 – February 2015).

See more details about this project

 https://sv.wikipedia.org/wiki/Kuggen
 http://www.energi-miljo.se/artikelem/ny-styrning-viktig-kugge-for-miljon/

Stakeholders

Contracting method

Other methods

Energy consumption

  • 37,00 kWhpe/m2.year
  • 55,00 kWhpe/m2.year
  • Primary energy needs

    37 kwh/m2/year - heating
    9 kwh/m2/year - cooling
    27 kwh/m2/year - property electricity

  • 73,00 kWhpe/m2.year

Envelope performance

  • 1,00 W.m-2.K-1
  • About envelope U-value:
    We dont have any numbers but I have to write something down to get futher on with in this form.
    The buildning its a Green Building classification

More information

All kwh above was BEFORE we installed the Ecopilot.
Energy savings with Ecopilot:
Heating: -49%
Cooling: -50%
Property electricity: -30%

Real final energy consumption

    42,00 kWhfe/m2.year

    42,00 kWhfe/m2.year

    2 013

Systems

    • Urban network
    • Heat pump
    • Heat pump
    • Solar Thermal
    • Urban network
    • VAV Syst. (Variable Air Volume system)
    • Natural ventilation
    • Free-cooling
    • Solar Thermal
    • No renewable energy systems

    Existing heating, cooling and ventilation systems

    The building is ventilated with a VAV system (Lindinvent), which is controlled based on presence and CO2. There isalso a connection to radiator valves for sequence control of heating/cooling.The air handling unit (Fläkt Woods) is equipped with rotating recovery andspeed control. There is also a small unit which supports a few fume cupboardsand local exhausts. This unit has fluid coupled heat recovery. The building hasa radiator system and district heating is the primary heat source. However,there are two supplementary heat sources:

    1) Solar collectors on the roof heat thehot service water. The solar heat is measured separately and data is easilyavailable in the computerised control unit (CCU). Two meters allow measurementof the warm water consumption.

    2) An outdoor air heat pump heats thereturn on the secondary side. This also has separate meters through CCU.

    The building’s cooling system is supportedwith district cooling. The cooling consumption is measured. Electricity forproperty management is measured separately from business electricity. Businesselectricity is measured separately for each floor (5 floors

Smart Building

    See decription about Ecopilot

    The quantity of heat produced from the heatpump differs markedly from the autumn of 2014 compared to the previous year,and if these values are included the total heat saving is approximately 50% for the six months. The quantity of consumeddistrict cooling during the period with Ecopilot (September 2014 – February2015) was approximately 50% lower than without, but as the cooling demand was low during this period anevaluation with higher outdoor temperatures needs to be conducted in order todraw general conclusions.

    Propertyelectricity declined by 30% during the period withEcopilot and parts of the saving are linked to the heat pump being in operationto a lesser degree.

    Without Ecopilot Sep 2013 – Feb 2014 (MWh)
    With Ecopilot Sep 2014 – Feb 2015 (MWh)
    Diff (MWh)
    Energy saving (%)
    District heating consumption
    82.88
    43.15
    -39.73
    -48 %
    Temperature corrected district heating consumption
    87.67
    49.53
    -38.14
    -44 %
    Heat from heat pump
    90.58
    44.49
    -46.09
    -51 %
    Total heat consumption
    173.46
    87.64
    -85.82
    -49 %
    District cooling
    6.37
    3.20
    -3.17
    -50% (5)
    Property electricity (incl. electricity for heat pump)
    85.20
    59.82
    -25.38
    -30 %
    Business electricity
    75.31
    78.32
    3.01
    +4%
    (5) Does not cover the summer season with greatestneed of cooling and therefore it is difficult to draw conclusions about thesaving.

    The conclusions which could be drawn arethat the requirements for the indoor environment are fulfilled with Ecopilot and that with the new control youhave greater variations in the room temperature and air flow, especially duringthe summer drop, but that the greater variation takes place outside the comfortperiods.

    At Kabona we look forward to contributing to property owners in Europe lowering their energy consumption to the lowestlevel possible in a cost-efficient manner, with a payoff of approximately 3–5years.

Urban environment

    Kuggen is located in a business area close to the water.
    There are many opportunities for public transportation. The bus station is just outside the building, 50 meters, and its takes only 9 minutes to the city center of Gothenburg

Product

    Ecopilot

    Kabona AB

    Ulf Falkenby; [email protected]

     http://www.ecopilot.com

    Ecopilot is a new system with integrated control of ventilation, heating and cooling. Ecopilot functions brilliantly, both for new production and existing properties where we over-modulate existing BMS. The system particularly takes into account heat storage in the building and thereby counteracts the need of, in a short duration, alternating from heating to cooling, and vice versa. Ecopilot optmises energy with respect to internal loads, weather forcast, indoor temperature, wind impact and sun insolation.

    They are very happy about the huge enrgy savings that we have accomplished
    The conclusions which could be drawn are that the requirements for the indoor environment are fulfilled with Ecopilot and that with the new control you have greater variations in the room temperature and air flow, especially during the summer drop, but that the greater variation takes place outside the comfort periods.

    There is a full report from this study that you can get from Mr Lars Ekberg at CIT Management

    https://www.construction21.org/data/sources/users/15156/ecopilot-picture-awards.pptx

Construction and exploitation costs

  • 40 000
  • 8 000

Indoor Air quality

    The conclusions which could be drawn are that the requirements for the indoor environment are fulfilled with Ecopilot. At Kabona we look forward to contributing to property owners in Europe lowering their energy consumption to the lowest level possible in a cost-efficient manner, with a payoff of approximately 3–5 years.

Reasons for participating in the competition(s)

​This summery is for both categories:

Kabona AB

Kabona is a company which works with brilliant energy building automation and the company’s head office is located in Borås, Sweden. Kabona was founded in 2001 and has long-standing and solid experience, which has formed the basis of our innovative and energy smart product Ecopilot.

Our unique product – Ecopilot

Ecopilot is a new system with integrated control of ventilation, heating and cooling. Ecopilot functions brilliantly, both for new production and existing properties where we over-modulate existing equipment. The system particularly takes into account heat storage in the building and thereby counteracts the need of, in a short duration, alternating from heating to cooling, and vice versa. There are currently approximately 320 installed Ecopilots. For more information about the product and our customers, please logon to ecopilot.com

Project property Kuggen, Lindholmen Göteborg – independent evaluation of Ecopilot in a modern office building

The building Kuggen is an office building of 4,898 m2 divided on 5 floors and was put into operation in 2011. From the start, even before Ecopilot, the building had good energy performance and has been certified in accordance with the EU programme for energy-efficient building, Green Building.

The evaluation was performed by an independent party, CIT Energy Management AB, without links to the supplier of Ecopilot. This evaluation covers six months (the time period September 2014 – February 2015).

Conclusion

 

Without Ecopilot Sep 2013 – Feb 2014 (MWh)

With Ecopilot Sep 2014 – Feb 2015 (MWh)

Diff (MWh)

Energy saving (%)

District heating consumption

82.88

43.15

-39.73

-48 %

Temperature corrected district heating consumption

87.67

49.53

-38.14

-44 %

Heat from heat pump

90.58

44.49

-46.09

-51 %

Total heat consumption

173.46

87.64

-85.82

-49 %

District cooling

6.37

3.20

-3.17

-50% (5)

Property electricity (incl. electricity for heat pump)

85.20

59.82

-25.38

-30 %

Business electricity

75.31

78.32

3.01

+4%

 

(5) Does not cover the summer season with greatest need of cooling and therefore it is difficult to draw conclusions about the saving.

The conclusions which could be drawn are that the requirements for the indoor environment are fulfilled with Ecopilot. At Kabona we look forward to contributing to property owners in Europe lowering their energy consumption to the lowest level possible in a cost-efficient manner, with a payoff of approximately 3–5 years.

Building candidate in the category

Low energy renovation

Low energy renovation

Smart Buildings

Smart Buildings

Green Building Solutions Awards 2015
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Ulf Falkenby


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