innovative energy concepts for sustainable … pruksa+ & activation_0.pdf · innovative energy...

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

2© EGS-plan . Nexus Plus Energy Buildings . 18.08.2016

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


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


How to achieve energy efficiency in buildings?

Location Building envelope Technology

Energy Design


Further Energy Plus Projects of EGS-plan in Germany

HHS Architekten, Kassel

EGS-plan, Stuttgart


EGS-plan, Stuttgart


EGS-plan, Stuttgart


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


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


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 %


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


Internal Thermal Insulation – Insulated Frames

Metal Studs for internal Insulation

Internal Insulation (Mineral Wool) before closing the Wall

Insulated PVC frame (Pruksa+: double glazing)


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


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]


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


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


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


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!


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


Daylight / Visual Comfort Thermal Comfort

Further Sustainability Features 2

DGNB Gold AnticipatedGreen Products


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


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


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]


INFOSYS in Hyderabad / India

VAV System Concrete CoreCooling System


Concrete Core Cooling in Hyderabad – Extreme Hot and Humid Climate! → Condensation?


Measurement Results after two years –Comparison between VAV and radiant Cooling

35 % lower

energy demand

better thermal

comfort


It is not only about energy,but also about quality of life!

Thank you for your attention!


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

[email protected]

www.egs-bangkok.com

innovative energy concepts for sustainable … pruksa+ & activation_0.pdf · innovative energy...

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