innovative energy concepts for sustainable buildings in ... · • master of sustainable design...
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EGS-plan (Bangkok) Co. Ltd.
Innovative Energy Concepts for sustainable
buildings in Tropical Climates
Dr.-Ing. Robert Himmler
GIZ Workshop „Nexus Plus Energy Buildings“
18.08.2016
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Sustainable buildings and neighborhoods
Theory…
• Energy Plus BuildingsEnergy and sustainability concept
for zero and plus energy buildings
• Master of Sustainable DesignDevelopment of a new Curriculum
“Master of Sustainable Design”
• Life Cycle Costs of BuildingsCalculation of economic efficiency
of energy saving measures
… and Practice!
• EGS-plan Germany- Established 20 years ago
- More than 60 engineers working on
zero energy and energy plus
buildings
• energydesign (Shanghai) Co., Ltd.- established 10 years ago
- 10 employees
• EGS-plan (Bangkok) Co., Ltd.- Established one year ago
- 6 employees
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Engineering Services of EGS-plan
Design Services(HVAC, Electrical)
Energy and SustainabilityConcepts
Computational Building Simulation
Measurement and Verification
Sustainable Building Certification (LEED, DGNB)
Development Services and Technical Cooperation
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How to achieve energy efficiency in buildings?
Location Building envelope Technology
Energy Design
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Further Energy Plus Projects of EGS-plan in Germany
HHS Architekten, Kassel
EGS-plan, Stuttgart
HHS Architekten, Kassel
EGS-plan, Stuttgart
HHS Architekten, Kassel
EGS-plan, Stuttgart
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Reference Projects in China and Vietnam
DALIAN BEST CITY PASSIVE HOUSE
office-administration-mixed use,
Qingdao, app. 80.000m2, construction started
pre-certified
Ho Chi Minh City MegaCity Project, Vietnam
Research Project
Zhangjiang Science and Culture Exchange Centre, Shanghai first DGNB Project in China
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The Pruksa+ Project in Bangkok
Idea:
• Design of a Pilot single family house
• Fulfil Energy Plus Standard
• Sustainable Building Certification
according to DGNB
Project Partners:
• Project Owner
• General Contractor
• Architect
• DGNB certification
• Energy Design
• DGNB certification
[sourc
e:
unexpecte
d a
rchitects
Bangkok
The plant
Estique
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Simulation Study about Passive Measures(early project stage)
219.4
196.3
154.7
121.4
140.9
96.586.8
0.0
50.0
100.0
150.0
200.0
250.0
Base-line
Infiltrationn50=0,61/h
Infiltration&FullShading
Infiltration&FullShading&Insulation
Infiltration&FullShading&Windows
Infiltration&FullShading&Shading&Windows
Photovoltaics
EndEnergy[kWh/(m
²a)]
PhotovoltaicsPventsPchillerPappliances
- 56.0 %
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Building Physics
Roof:Mineral Wool
(10 cm, U < 0,3
W/m2K)
Wall:Mineral Wool
(5 cm, U < 0,6 W/m2K)
Window:Glazing: Ug = 1,7 W/m2K; g = 0,33; τ = 0,66
Frame: Uf = 1,7 W/m2K
ExternalShading
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Internal Thermal Insulation – Insulated Frames
Metal Studs for internal Insulation
Internal Insulation (Mineral Wool) before closing the Wall
Insulated PVC frame (Pruksa+: double glazing)
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Implementation of Air tightness on the Construction Site
Compressed Tape between Frame
and Wall
Construction Tape at Suspended
Ceiling (roof) and wall
Compression Tape
Pipe through external wall
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Blower Door Test to check Air Tightness
0
200
400
600
800
1000
1200
1400
1600
1800
2000
10 20 30 40 50 60
AirFlow[m
3/h]
PressureDifferenceOutside- Inside[Pa]
OverPressure (Pruksa+)
UnderPressure(Pruksa+)
OverPressure (ReferenceHouse)
UnderPressure(ReferenceHouse)
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
4,5
PassiveHouseStandard
GermanStandardforHouseswithmech.
Ventilation
Pruksa+House GermanStandardforHouseswithnat.
Ventilation
ConventionalHouse
AirC
hange[1/h]
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Hybrid Ventilation Concept
December - February:• Air-Con switched off• Natural Window
Ventilation• No Energy
Consumption for mech. Ventilation
March - November:• Air-Con switched on• Mechanical
Ventilation • Energy Recovery• Filtered Air• Sound Absorber
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0
500
1000
1500
2000
2500
3000
3500
4000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
ElectricLoad/PV
Pow
er[W
]
Time ElectricDemand PVGenerated Supply fromGrid
Solar Yield
Air-Conditioning
Appliances
with ice storage!
0
500
1000
1500
2000
2500
3000
3500
4000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
ElectricLoad[W
]/PVPower[W
]
TotalDemand PVGenerated Appliances /Light
Appliances
Air-Conditioning
Solar Yield
without ice storage…
Optimized Load Curve with Ice Storage
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Energy Supply with 5 kW PV field and 1000 l ice storage
Household
appliances
Fan Coils
(6,8 kW)Dry Heat Rejection
Domestic Hot
Water Storage
Bathroom
Public Grid
1000 lIce Storage
PV Field (5 kW)
Water cooled
Cold Water Chiller
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Annual Energy Balance
0
2.000
4.000
6.000
8.000
10.000
12.000
14.000
16.000
ElectricDemand ElectricSupply CoolingDemand IceStoragedischarge
Energy[kWh/a]
Annual EnergyBalance
ElectricAppliances Chiller PVDirect FromGrid ExcessPV Cooling
annual energy costs: 14,000 THB!
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Further Sustainability Features 1SR01 TH
02TH03
TH04
TH05
TH06
TH07
T07
T04
T05
T02
T03
T10
T01
T08
T06
T09
T11
T12
TH01
Measurement and Verification Handicapped Accessibility
Acoustic Comfort
428,8 564,5 598,9 699,818,4 18,4 18,4 18,4
5.864,2
1.159,7
-3.453,0
42,8
172,7
207,2 308,1
70,8
72,3
72,4 72,6
6.425,0
1.987,6
896,8
-2.354,1
-4.000
-3.000
-2.000
-1.000
0
1.000
2.000
3.000
4.000
5.000
6.000
7.000
Typical house Nearly net zero energy house
Net zero energy house Energy plus house
Prim
ary
ener
gy (G
J)
Manufacturing Construction Use Maitenance End of life Total
Life Cycle Assessment
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Daylight / Visual Comfort Thermal Comfort
Further Sustainability Features 2
DGNB Gold AnticipatedGreen Products
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Infiltration
Transmission
In past: air conditioning systems, which use air for heat transfer
Problems with:
• high energy
demand
• floor to floor height
• thermal comfort
(draft)
• noise emission
• Investment costs
for suspended
Ceiling
• maintenance
• area efficiency
(HVAC)
Solar
Radiation
4,0 - 4,5 m
3,0 m
Office Concept of aconventional OfficeBuilding
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Innovative Radiative Cooling Systems
• Reduce floor
height, increase
floor area
• Reduce HVAC
spaces and shafts
• Reduced energy
demand
• Better comfort
• Reduce
construction and
operation costs
Solar
Radiation
Infiltration
Transmission
3,3 m
Office Concept of aninnovative OfficeBuilding
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Technical Description: Concrete Core Cooling
Das RAUTHERM S-Rohr
Der Werkstoff PE-Xa entsteht durch die Vernetzung von Poly ethylen (PE). Der Basis rohr werk stoff ist ein lineares und hochmolekulares PE hoher Dichte mit hoher Festigkeit. Aus diesem Grund zeichnet sich schon das Grundmaterial durch besonders gute Schlag- und Kerbschlagzähigkeit sowie hohe Rissfestigkeit aus.
Die Vernetzungsreaktion erfolgt während der Rohrformung im Werkzeug. Zusätzlich ist das RAUTHERM S-Rohr durch eine EVAL-Ummantelung gegen Sauerstoffeintrag geschützt.
Auf der Grundlage von mehr als 40-jähriger Erfahrung in Labor und Praxis, einer Vielzahl von Ver su chen und umfangreichen Prü fun gen an
Rohren aus hochdruckvernetzten Polyethylen, wurden die notwendigen Parameter, wie z.B. Tempe ratur- und Druckfestigkeit des PE-Xa-Rohres, entwickelt.
Das robuste RAUTHERM S-Rohr hat sich bei einer Vielzahl von BKT-Objekten im harten Bau stel len-alltag bewährt.
Der Anschluss der Heiz-/Kühlkreise erfolgt über REHAU Industrie verteiler oder mittels Tichelmann-verteiler.
Die REHAU Systeme verfügen über alle wichtigen Zertifikate und Prüfzeugnisse. Das Qualitätsmanagementsystem nach ISO 9001 steht für Zuverlässigkeit und Leistungs fähigkeit von REHAU.
4
• Pipe material is high
density, networked
polyethylene (PEX)
• Projected Lifetime: 100
years
• Pipe Modules (10 – 30 m²)
are placed on reinforcement
and covered by concrete
• Pipe collectors are either in
raised floor or from ceiling
• During concreting pipes are
pressurized
• Pipe diameter: 17 – 20 mm
• Pipe distance: 15 – 30 cm
• Flow: 10 bis 15 kg/hm² [Source: REHAU]
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INFOSYS in Hyderabad / India
VAV System Concrete CoreCooling System
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Concrete Core Cooling in Hyderabad – Extreme Hot and Humid Climate! → Condensation?
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Measurement Results after two years –Comparison between VAV and radiant Cooling
35 % lower
energy demand
better thermal
comfort
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It is not only about energy,but also about quality of life!
Thank you for your attention!
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More Events: Innovation & Lifestyle Night (German-Thai Chamber of Commerce, 29. October 2016)
[source: OIA architects]
Pandora Green Industry and Lifestyle Campus, Chiang Mai (finished: 10/2016)
44 Srijulsup Building, Floor 12, Rama 1 Road,
Rong Muang, Pathumwan,
10330 Bangkok, Thailand
www.egs-bangkok.com