1. Uponor Group Headquarters
Plaza Loiste, Vantaa, Finland
Ilari Aho
November 2013

2. Plaza Loiste
Key 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
25 November 2013
©Uponor
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3. VENTILATION
MACHINERY ROOM
• Mechanical supply/
exhaust with high
efficiency heat
recovery
• Water chillers for
peak cooling
demand
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
ENTRANCE AREA
Snow and ice
melting
•
BOILER ROOM
• Connections to
district heating and
boreholes
FREE COOLING
11 boreholes with Uponor G12
providing free cooling to Uponor floors
25 November 2013
FLOORS 1 - 5
Underfloor heating
©Uponor
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4. 25 November 2013
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5. Plaza Loiste Environmental Performance
Free cooling for energy efficiency
Energy production of the Plaza Loiste borehole cooling system
Month
• 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
Simulated energy
production of the borehole
field
Cooling energy demand of the
building
kWh/month
Anna Forsström: G-12 ENERGIANKERUUPUTKIEN KÄYTTÖ MAAVIILEÄN KERUUSSA
Opinnäytetyö, Ympäristöteknologia, YAMK ,Toukokuu 2013
25 November 2013
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6. 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
25 November 2013
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7. 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.
25 November 2013
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8. 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
25 November 2013
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