January 2015ZEB Pilot House Multikomfort Larvik Residential show case - centre of competence. The building material supplier Optimera and Brødrene Dahl has jointly developed and defined Multikomfort, to increase knowledge about future energy technology, building systems and materials, and to facilitate the selection of solutions and products for homeowner, building and plumbing. The volume of the house describes a single family house, however, the building is intended for use as a demonstration platform to facilitate learning on building methodology for plus houses with integrated sustainable solutions. Norway. .ZEB Pilot House Multikomfort Larvik GENERAL Name: Multikomfort-House Larvik. and Optimera. ZEB partner Brødrene Dahl.multikomfort. Info: www. Designer: Snøhetta architects. New/retrofit: New.8 million NOK. Climate: Class D. Certification: Not certified yet. Scandinavia’s largest independent research body SINTEF. Use: Residential show case. Location: Larvik.no The ZEB Multikomfort House is a cooperation between Snøhetta. Continental / microthermal climate. Owner: Brødrene Dahl AS and Optimera AS. Heated area: 202 m2. Investment cost: 5. (Köppen Climate Classification). Awards: Nominated for Mies van der Rohe Awards 2015. The house is a plus house. Annual RES generation: 19200 kWh/y from PV. Air tightness: 0. built on site. Carrying construction in glued wooden beams. Passive cooling strategies: passive(shadow) solar protection on bedroom windows and other windows placed away from the sun. roof: 0. RENEWABLE ENERGY Sources: Solar PV. Energy is collected from the sun and groundwater.084. CO2 annual emissions: 6. flat plate collector (Hewalex). ZEB O&M. it has full utilization and recovery of energy from waste water. The building's renewable energy production compensate for greenhouse gas emissions from operation and production of its building materials. Ventilation: Mechanical 242 m3/h.30. Conscious choice of materials with as little concrete as possible and reuse of old bricks. (100 % coverage Primary energy need).111. The 200-square-metre Multikomfort House covers its own energy needs. Passive heating strategies: Very well insulated and extremely airtight building envelope.24 kg CO2/y. Moreover. windows: 0. Energy rating: Not rated yet. PV installed power: 23 kWp. By using high-tech solutions it produces the energy required for daily operation. solar thermal.74. Final energy consumption: 6900 kWh/y. Old railway sleepers was used in the construction of the garage. U-values W/K/m2: Walls: 0.DESIGN Approach: Positive Energy. Solar thermal installed power: 16 m2 . ENERGY Primary energy need: 16387 kWh/y. . delivered precut. Construction typology: Mainly wooden construction. and generates enough surplus energy to heat the swimming pool and even charge the family’s electric-powered car. . from the outset. Completion year: 2014. Users: Open for both professionals and non-professionals. The concept of the project was to create a center of excellence to develop repeatable solutions for sustainable living. New/Retrofit: New.GENERAL ZEB Pilot House Multikomfort Larvik BUILDING Name: Multikomfort House Larvik. The house focuses on offsetting carbon emissions and on the choice of sustainable materials. Type of ownership: Private. Building/community: The Norwegian architecture company Snøhetta worked to develop a single family house that generated more energy than it consumed. Use: Residential show case – center of competence. Heated area: 202 m2. Norway. . Glazed area: 59 m2. Façade area: 229 m2. however. LOCATION Location: Larvik. the building is intended for use as a demonstration platform to facilitate learning on building methodology for plus houses with integrated sustainable solutions. Gross total volume: 610 m3.GENERAL BUILDING Building description: The volume of the house describes a single family house. Population: 43132. Site: Rural. Cooled area: 0 m2. Floor height: 3 m. Area and volume: Gross floor area : 202 m2. Construction company: Espen Staer AS. Bergene Holm. Grohe. Oso. Glava. (Köppen Climate Classification). Geberit. Elfa. Gustavsberg. Natre. Intra. Paslode. Designers: Snøhetta architects. Moelven. Heating degree days: 4105 (Basis 17 C. Cooling degree days: Yearly sunshine hours: 4275. Reference climate. Awards: Nominated for Mies van der Rohe Award 2015. Barkevik. Uponor. Sandefjord Torp. N1961-90).eklima. Isola. 1100 kWh/m2/year. Schneider Electric. Solar radiation: App. Continental / microthermal climate. Nilan.GENERAL CLIMATE Climate description: Class D. Velux and Weber. Boen. Source: www. Gyproc. Grundfos.6 C. Lighthouse Company. Porgrund. Mean annual temperature: 7. Ifö. Oras. Fischer. Villeroy&Boch. Lyngson. Pipelife. .no ACTORS & AWARDS Owner: Brødrene Dahl AS and Optimera AS. VPI. Microclimate: Mild and windy costal climate. Supporting actors: Bergersen Flis. Aubo. Standard cost in the region: 560.000 Euros. Source: www. will serve the energy needs of the family house and generate enough surplus to power an electric car year-round! For this to become a successful reality. Public aid: None. no data yet available. These elements. Gap: Just opened. together with geothermal energy from energy wells in the ground. on all electrical consumption.GENERAL COSTS & FINANCING Construction Cost: 675. thermal energy production and consumption for heating and hot water.000 Euros. and therefore have no inhabitants. Extra nZEB cost: 116. Comfort commissioning: Not yet evaluated. IMPLEMENTATION Implementation process: The house in the garden has a characteristic tilt towards southeast and a sloping roof surface clad with solar panels and collectors. architecture and technology must come together and ensure optimization of both comfort and energy use.000 Euros.com . Financing scheme: Paid by owners and supporting actors. COMMISSIONNING Energy commissioning: Extensive energy metering.snohetta. USERS User behavior: At the moment the house is only used for demonstration purpose. Daylighting: Daylight autonomy 60% ( 300lux. In addition the building should supply enough energy for the family's electrical car. .DESIGN ZEB Pilot House Multikomfort Larvik DESIGN APPROACH Approach: Positive energy. 8 am-8 pm. Goals: ZEB-OM. Design methodology: Since embodied emissions has been a part of the energy/emission calculations the materials has been an important part of the design phase. delivered precut.operation and materials. Carrying construction in glued wooden beams. Motivation: Aim of the project is to show that the housing of tomorrow can be built today. Key points: Focus on material use. built on site. and energy supply design. Zero Emission Building . CONSTRUCTION Construction typology: Mainly wooden construction. 36 x 098 mm timber frame. Ground floor: 48 x 500 mm beams S-beam from Moelven (glulam) . 48 x 500 mm S-beam from Moelven (glulam).DESIGN (version2) DETAILS Facade: Wall with double timber frame and cavities. 36 mm studding. 48 x 098 mm timber frame supporting wall. 9 mm Glass Rock Storm sheathing. Windows: Wooden frame. Interior lining. Fully adhered. 500 mm Glava X33 mineral. Uwindow0. 23 mm coils. 19 mm cladding.15 mm. 30 x 048 mm battens. 150 mm cavity. Thermal inertia: Brick wall on one wall going through both floors. Vapor barrier 0. U-value 0.084. transmittance 0. 25 mm thermo chipboard from Forrestia as under floors and heating / underfloor heating.03. Sheathing: Tyvek sheathing the crawl space. 100 + 150 + 100 mm Glava X 33 mineral wool.08. Passive cooling: Passive(shadow) solar protection on bedroom windows and other windows placed away from the sun.15 mm. PASSIVE STRATEGIES Passive heating: Very well insulated and extremely airtight building envelope.44. . Interior lining. Thermal bridges: 0. 10 mm Boen Prestige parquet. 500 mm Glava X 33 mineral. 6 mm rehab plasterboard. Vapor barrier 0. 2 x 48 mm cross battens. U-value 0. Wall seen from outside. Tyvek sheathing.74. 19 mm rough panels.111. U-value 0. Roof: Isolation Mastertekk.61 Uglass 0. In addition great effort has been put to combining comfort with energy efficiency.snohetta. and the engineers designing the technical solutions where involved from the beginning. Type: Mechanical ventilation. in one of the world’s most advanced family houses. An outdoor atrium with fireplace and furnishing opens for outdoor dining from early spring to late fall. in a room with walls of stacked firewood and bricks.DESIGN AIR QUALITY Air tightness: 0. Waste: During construction all waste has been sorted and delivered to recycling. Design rate: 242 m3/h. The house needs a large roof for solar panels. Source: www.30. . ENVIRONMENT Water: Rainwater from the roof is collected in an 6m3 tank and used in toilets and for garden. A feeling of cabin life.com INNOVATIONS Technology: Design follows the environment. System: Nilan Compact P. and this influence the design. Other: The design process is changed when building this kind of building. balanced ventilation with heat recovery 85% and a heat pump in the extract air producing hot potable water. washing machine(using hot water) and dryer.8 kWh/m has been used for simulations. (TEK 10: Current building technical regulations in Norway). Total consumption (lighting and appliances ): 5581 kWh/y. Net energy need for standard building: 120 kWh/m2/y + 1600/m2 heated area.ENERGY ZEB Pilot House Multikomfort Larvik ENERGY INDICATORS Primary energy need: 16387 kWh/y or 81 kWh/m2/y. . .Large roof windows for good and natural lightning. COMFORT Temperature set point (heating): 21 C. In total an yearly consumption of 15. Waterbourne floor heating covers the 1st floor. Appliances: Dishwasher(using hot water). LIGHTING & APPLIANCES Lighting: Only LED lamps. According to the test conducted by the Danish Technological Institute in accordance with EN 14825: 2012. It is intended to cover 80% of the energy demand for heating. energy recovery from grey water and geothermal heatpump). In addition. (Simulated values). which supplies hot water to the heating system. Cooling demand: 0 kWh/y. Lighting demand: 1765 kWh/y. ENERGY SYSTEMS Heating system: The heating system for this house is designed with basis in a Nilan Compact P Geo 3 with an integrated 3 kW ground source heat pump. DHW demand (domestic hot water) : 6445 kWh/y (3223 kWh/y after grey water energy recovery). The heat pump can retrieve energy from either an energy well of 100m or an earth circuit at 150m. The heat is accumulated in a 400 l tank from Oso. . Cooling system: Energy storage: OSO EPTRC 400 accumulator. the heat pump has a SCOP of 5. and distributed in the house with underfloor heating from Uponor throughout the 1st floor and in the bathroom on the 2nd floor. it is installed a large radiator from Lyngson on each floor. Total electricity demand: 6900 kWh/y. and this paves the way to test how the system can be optimized. Heat distribution is designed to use only part of the system at the same time.17. delivered by Schneider. Control and Automation: KNX controlled heating and lighting. The remaining 20% of the heating comes from 16 m² of solar collectors from Hewalex mounted on the roof.ENERGY ENERGY DEMAND Heating demand: 4236 kWh/y for heating and ventilation (solar heating. System: Battery bank with capacity for one summer day. Hewalex. Investment: 1830 €/kWp. .5 kW. and grid connected through an inverter.RENEWABLE ENERGY SOURCES .Photovoltaics.RES ZEB Pilot House Multikomfort Larvik RES Total RES installed power: 22. RES cost: 1830 €/kWp (total investment cost of RES). SOLAR PV Installed power: 23kWp.12 €/kWh (no feed-in tariff. SOLAR THERMAL Annual generation: 4000 kWh/y (goal). Maintenance: Recently installed. Renewable energy sources: . Collectors surface: 16m2. Maintenance: Recently installed. BIOMASS Outdoor fireplace. Not installed inside yet. only spot is offered). Feed-in-tariffs: 0.02-0. . Panels Surface: 150 m2.Solar thermal. Total RES generation: 19200 kWh/y. System: Flat plate collector. Annual generation: 19200 kWh/y (goal).