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Workshop 3:
Realizing nZEB Hospital Buildings
together
Date: 23rd May 2016Time: 10.30-12.00 Location: Columbinesalen
19/05/2016
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Workshop 3 - Realizing nZEBHospital Buildings Together
Wim Maassen
Date: 23rd May 2016Time: 10.30-12.00 Location: Columbinesalen
Inspiration & Enthusiasm
Wubbo Ockels (1946‐2014)
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Expected Workshop Results
Advice to REHVA:
How can Hospital Buildings achieve nZEB?
What are the most promising technical solutions?
What is necessary to implement these solutions in practice?
How can REHVA stimulate the above?
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Your Facilitators
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Wim MaassenLeading Professional – Royal HaskoningDHVTU/e Fellow – Eindhoven University of Technology
Hans BesselinkSenior Consultant – Royal HaskoningDHVREHVA FellowTVVL Delegate
Dave BaasGraduate Student Building Services – Eindhoven University of Technology, Department Built Environment
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Royal HaskoningDHV
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New University Hospital Aalborg Construction
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Royal HaskoningDHV
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Rotterdam Erasmus Medical CenterProject Management, Building Services
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Royal HaskoningDHV
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Amsterdam VU Medical CenterMulti disciplines, Energy Master Planning, Imaging Center, Diagnostic Center, BREEAM
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Project: nZEB Hospital Buildings
Royal HaskoningDHV executes project with Eindhoven University of Technology. Supported by TVVL and REHVA.
Goal: Give information and insight in nZEB developments Contribute to the road to nZEB
Focus: Existing Hospitals: energy saving potential and measures New Hospitals: optimized solutions and realistic nZEB
definitions
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Related research projects:
Reduced ventilation for isolation rooms (AMC Rotterdam)
Renovation existing Policlinic (AMC Amsterdam)
Feasibility NL nZEB Hospital definitions
Closing the Energy Performance Gap
Transformation of multi- to one-patient rooms (AMC Utrecht)
Project: nZEB Hospital Buildings
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Program
Introduction - Explanation workshop 20 min
Workshop part I - Feedback part I 25 min
Break 5 min
Workshop part II - Feedback part II 25 min
Advice to REHVA - Roundup 15 min
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Roadmap to nearly Zero Energy Buildings
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2014: The Netherlands compete in the REHVA Student Competition
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Energy Performance CoefficientOffices
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
Energy Performance CoefficientOffices
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nZEB is technically feasible!
2011 TNT Centre HoofddorpEPC= 0.67, including bio‐fuel CHP ‐1.6 LEED platinum
EPC= ‐0.298 & BREEAM outstanding
2012 Venco Campus Eersel
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NL nZEB Definitions
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DRAFT - NL nZEB definitions(July 2015)
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Building
function
Energy
demand
[kWh/m2.y]
Energy use
[kWh/m2.y]
Sustainable
energy [%]
Dwellings 25 25 50
Offices 50 25 50
Schools 50 80 50
Health Care
facilities
65 120 50
∆EPC(2015)
-/- 100%
> -/- 100%
-/- 50%
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NL Fossil Energy Use
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Schoenmakers I., 2014, A systematic approach to obtain energy reduction in the complex HVAC systems of UMCs, MSc thesis TU/e. Eindhoven, Netherlands
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Energy use AMC
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
Energy Use AMCventilation, heating & cooling
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Schoenmakers I., 2014, A systematic approach to obtain energy reduction in the complex HVAC systems of UMCs, MSc thesis TU/e. Eindhoven, Netherlands
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Energy Use AMCVentilation, heating & cooling
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Schoenmakers I., 2014, A systematic approach to obtain energy reduction in the complex HVAC systems of UMCs, MSc thesis TU/e. Eindhoven, Netherlands
Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
NL nZEB Hospital Buildings scores
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Variants Energy demand
[kWh/m2.y]
Energy use
[kWh/m2.y]
Sustainable
energy [%]
Draft NL nZEB
Definitions
65 120 50
Existing NL
Hospitals
200 300 ?
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3Use fossilenergy
efficiently
1Reduce energy demand
2Apply sustainable energy sources
Trias Energetica method
nZEB approach (Trias Energetica)
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3Use fossilenergy
efficiently
1Reduce energy demand
2Apply sustainable energy sources
5Use fossil energy
efficiently
1
User demand & behaviour
2Reduce energy demand
3Apply sustainable energy sources
4
Energy exchange and storage systems
Trias Energetica method
Five step method
nZEB approach (5-step)
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nZEB approach – User Central
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
nZEB approach – Healing Environment
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[Picture: aarhus arkitekterne]
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nZEB approach – Energy Exchange & Storage
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nZEB approach – Energy Exchange & Storage
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Step Measures
1. User demand & Behaviour
Lower internal heat loads (more use of stand by mode), zoning, smart and individual control systems (human in the loop, SR ventilation), low flow fume hoods, low energy consuming MRI, Combiningprocesses/equipment/test set ups
2. Reduce Energy Demand
Insulation, envelope airtightness, heat recovery ventilation/hot tapwater, use daylight, thermal mass, demand control ventilation, LED lighting, Less heating and cooling (change standards), energy efficientappliances, less or no humidification
3. ApplySustainable & Energy Sources
Photovoltaic solar cells, biomass, wind energy, adiabatic cooling
4. Energy Exchange& Storage
Long term energy storage in the soil/acquifer (LTES), short term energy storage (buffers, Phase Change Materials), Concrete Core Activation(TABS), Exchange energy between internal/external functions
5. Efficient use offossil energy
High efficient boilers, chillers, heat pumps, cogeneration of heat andpower
nZEB approach (5-step) - Measures
Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
SR ventilation
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Workplace Air Conditioning HUMAN IN THE LOOP
Human in the loop
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2012: The Netherlands wins Rehva Student Competition
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Connect
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20% about products
80% about processes/organisation
Circular economy
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Stakeholders for building developmentStakeholder Interests
• Municipality Perform policyAchieve certain facility in area
• Project developer Amount of m2€/m2 and €/mw.Performances
• Investor Contract periodsLow risks
• Contractor(s) Good deal: efficient work for good return
• End User High qualityPleasant building
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Connections
Contract forms:
• Design (& Build) (DB) Product• Design, Build, Finance, Maintain (DBFM) Service
• ESCO: Energy Service Company
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Continuous improvements
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CASE
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Case VU-VUmc Hospital
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Case VU-VUmc Hospital - Policlinic
Extended life time 10 to 30 years
No reliable design and monitoring data
No thorough recommissioning
Energy costs reduction of € 300,000.– per year realized by professional optimization.
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Case VU-VUmc Hospital - Policlinic
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VU-VUmc - District Development
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
VU-VUmc - District Development
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• first in yellow, Cancer Center Amsterdam (CCA);
• second in red, Policlinic; • third in brown, Acta and O2 research
buildings VU‐VUmc;• fourth in orange, Westflank;• fifth in green, Hospital building and
related structures; • sixth in blue, central energy plan
andt;• seventh, Gebouw Zuid building for
VUmc offices.
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
Area and buildings
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Step Measures
1. User demand & Behaviour
• Occupancy‐based smart controls ventilation, heating and cooling
• Occupancy‐based smart control lighting and equipment
2. ReduceEnergy Demand
• Upgrade HVAC system (CAV=>VAV)
• Upgrade building envelope
• Upgrade lighting systems
Case VU-VUmc Hospital - Policlinic
Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
Material – Workshop part I & II
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Workshop Part I
• Split into teams of 5 persons
• Fill out matrix (part 1) and create an energy neutral building (15 min)
• One person gives a short feedback of the results (team process, design approach, top 5-10 solutions) to the other teams using matrix, etc. (1-2 min)
• Teams vote for best team results (=> Winner part 1)
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
5Use fossil energy
efficiently
1
User demand & behaviour
2Reduce energy demand
3Apply sustainable energy sources
4
Energy exchange and storage systems
Five step method
nZEB approach (5-step)
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
nZEB approach – User Central
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Step Measures
1. User demand & Behaviour
2. Reduce Energy Demand
3. ApplySustainable & Energy Sources
4. Energy Exchange& Storage
5. Efficient use offossil energy
Results REHVA Workshop
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Workshop: Part 1
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Workshop Part II
• Split into teams of 5 persons
• Fill out matrix (part 2) and work on interests and connections of different stakeholders (15 min)
• One person gives a presentation of the results (team process, stakeholder management approach, top 5 solutions) to the other teams using matrices part 1 and 2, etc. (1-2 min)
• Teams vote for best team results (=> Winner part 2)
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Workshop: Part 2
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 2016
Advice to REHVA
How can Hospital Buildings achieve nZEB?
What are the most promising technical solutions?
What is necessary to implement these solutions in practice?
How can REHVA stimulate the above?
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Workshop - Realizing nZEB Hospital Buildings together | 22nd-25th May 201653
Thank you for your contribution!
For more information contact:
Wim Maassenwim.maassen@rhdhv.comT +31 6 537 05 294
Healthcare: www.royalhaskoningdhv.com/healthcarenZEB: www.royalhaskoningdhv.com/nzeb
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