• HVAC & Plumbing 200 experts

• Building Controls 35 experts

• Electrical 140 experts

• Real Estate Consulting 65 experts

• Hospital Equipments 6 experts

• Energy and Environment 25 experts

Granlund 470 people

Leading building services expert in Finland

Offices

• Helsinki• Riihimäki• Lahti• Tampere• Vaasa• Seinäjoki• Kuopio• Joensuu• St Petersburg• Espoo• Lappeenranta

Case:Meilahti HospitalPatient TowerProgressive renovation project in the hospital sector

Challenging start point

• Year 1965 built 17 floor ”Patient Tower” in the main hospital campus in Finland

• Strong moisture and wind load/stress fromsea - window seats are molded

• No cooling or decentheat recovery

• Poor air tightness

• Poor energy efficiency

• Poor IEQ

Developer and Design TeamDeveloper

• The Hospital District of Helsinki and Uusimaa (HUS)

Architects

• SARC Architects LTD

• Architect Group Reino Koivula Inc

Structural engineering

• Vahanen Group

Mechanical and Electrical engineering and Energy consulting

• Granlund Oy

Objectives

”Meilahti Patient Tower will be a pilotproject of the energy efficientrenovation in hospital sector in Finland”

EnhanceIndoorEnvironmentalQualityM

AX

IMIZ

ED

Challenges

• How to turn a concrete hospital ”bunker”,built in 1965, into a highly energy efficient pilot site

• 3 meter floor height to be used for all technical installations – 1,5 meter less than in a new building construction

• How to enhance IEQ at the same time

• Would have been cheaper to build new than renovate this building – conserved façade by building authority – new building is not an option

Case Meilahti

Conclusion:

Targets can’tbe met without

BIM + Energy Modelling

Solutions, BIM

• BIM design was used as ”a shoehorn”

• Collision problems solved mostly in the office

• Communication in penetration desingbetween designers

• Successfully done probably first time in the Finland in suchlarge project

• Energy modelling, LCC calculations, IEQsimulations, etc.

• Vizualizations

• Combination models – all designers

Solutions, Energy and IEQStructures:

• Double façade made of glass – ”raincover” and air tightness - the consumption of space heating energy will be significantly reduced

IEQ and comfort:• The air flow rates will be more than doubled, but the

heat recovery system boosted with heat pumps will have a significant effect on the energy consumption

• Comfort floor heating in the bathrooms is a newelement – energy by solar panels

• Cooling is added – by ground energy

Devices and systems using electricity:• Improved lighting controls and efficient lamp types

• Energy efficient equipment such as pumps, fans, etc.

• Highly intelligent steer and control

Solutions, Energy and IEQEnergy production:

• Innovative combined renewable energy production and reuse system – solar power – ground heat and cooling – several heat pumps – waste heat recycling –district heating – working seamlessly together

o Three optimized steering modes to maximize the efficiency winter – summer – middle season

• There is no such energy production solution built in Finland before!

Combined Energy Production/Reuse

Floor heating of the bathrooms coveredby solar heating

Heat recovery of AHU’s, extra heat from coolingcondensate and drill wells, exhaust air heat recoverycoils are also condensers at summer

Heat pump to moveinternal waste heat

Heating and cooling fromthe drilled well field

Exhaust air heat pump

District heating

• IEQ will be enchanced remarkably

• Project will be a trend-setter for energy efficient renovation not only in Hospital sector, but for hole construction industry in Finland

Biggest success, Energy & IEQ

Total change in CO2 emissions - 203 tons/a

Thank you!