Uponor Group HeadquartersPlaza Loiste, Vantaa, FinlandIlari AhoNovember 2013

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Plaza LoisteKey Facts

• 7 240 m² office space• 6 office floors, of which 2 for Uponor

• First BREEAM Very Good certified office complex in Finland

• Energy Class A

• UFHC, ceiling cooling, ground energy

• Architect: Forma-Futura Oy• Developer: NCC Property Development• HVAC design: Optiplan Oy, Uponor

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BOILER ROOM• Connections to district heating and

boreholes

FREE COOLING11 boreholes with Uponor G12

providing free cooling to Uponor floors

ENTRANCE AREASnow and ice

melting

UPONOR FLOORS• Underfloor heating

and cooling with free cooling from

boreholes• Ceiling cooling for

peak demand• Air circulation chillers

for peak demand in meeting rooms

VENTILATION MACHINERY ROOM • Mechanical supply/

exhaust with high efficiency heat

recovery• Water chillers for

peak cooling demand

FLOORS 1 - 5• Underfloor heating

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Plaza Loiste Environmental Performance

Free cooling for energy efficiency

• Free cooling energy from the boreholes covers the cooling demand of the Uponor offices

• Purchased cooling energy need eliminated on an annual basis

• Monitoring program established from the cooling season 2014 onwards

Anna Forsström: G-12 ENERGIANKERUUPUTKIEN KÄYTTÖ MAAVIILEÄN KERUUSSAOpinnäytetyö, Ympäristöteknologia, YAMK ,Toukokuu 2013

Energy production of the Plaza Loiste borehole cooling system

Simulated energy production of the borehole field

Cooling energy demand of the building

kWh/month

Mo

nth

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Plaza Loiste occupant survey

Thermal environment and sensation

• High satisfaction level, with some remarks on too cold temperature levels especially in the meeting rooms

• Regulation of the meeting room fan coil units has been adjusted after the summer period, and they should now work appropriately during the next cooling season

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Plaza Loiste occupant survey

Air movement

• Individual comments related to draught in meeting rooms caused by the fan coil units; this should be corrected by the adjustments that have already been made.

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Performance monitoring and verification

• Plaza Loiste is a pilot project in the national RYM Indoor Environment research program

• Monitoring and evaluation will be carried out regarding

― indoor environment quality― building energy performance― long term performance of the

borehole field― optimisation of the solution

• Partners― Aalto University― VTT Technical Research Centre of

Finland