thilo cunz architekt - eurhonet · thilo cunz │ architekt senior manager asia/europe luwoge...

BuildTog - affordable buildings in nearly-zero energy performance

Thilo Cunz │ Architekt

Senior Manager Asia/Europe

LUWOGE consult GmbH

affordable buildings in nearly-zero energy performance

BUILDTOG │ PROJECT COMPARISON


©LUWOGE CONSULT

energy demand optimization

BUILDING ENERGY BALANCE

-40

-30

-20

-10

0

10

20

30

40

50

60

1 2 3 4 5 6 7 8 9 10

kWh/m²a

GAINS AND LOSSES - 126 + 26

Envelope 1 Roof - 3%

2 Wall - 13%

3 Floor - 3%

4 Windows/ Doors - 21% + 10%

5 Thermal heatbridges

- 7%

Ventilation 6 Infiltration - 10%

7 Ventilation system - 17%

8 Window ventilation - 8%

Use 9 Hot water/ internal gains

- 28%+ 14%

Buildingservices

10 Heat generation - 16% + 2%

Standard


©LUWOGE CONSULT

REDUCTION OF TRANSMISSION LOSSES

• Reduction of building envelope in comparison to the building volume

• Increasing the average heat transfer resistance of the building envelope

• Increasing the average heat transfer resistance of the openings

• Avoidance of thermal bridging

REDUCTION OF VENTILATION LOSSES

• Reduction of infiltration losses

• Implementation of ventilation systems

• Adapting window ventilation

REDUCTION OF CONSUMPTION LOSSES

• Reduction of room temperature

• Reduction of hot water consumption

• Reduction of domestic electricity consumption

OPTIMIZATION OF BUILDING SERVICES

• Implementation of energy efficient technical devices

• Avoidance of losses through storage and distribution

• Reduction of system temperatures


MINIMIZING LOSSES

-40

-30

-20

-10

0

10

20

30

40

50

60

1 2 3 4 5 6 7 8 9 10

kWh/m²a

LOSSES (- 126%) - 85%

Envelope 1 Roof - 1%

2 Wall - 7%

3 Floor - 1%

4 Windows/ Doors - 11%


- 1%

Ventilation 6 Infiltration - 3%

7 Ventilation system - 24%

8 Window ventilation - 3%

Use 9 Hot water/ internal gains

- 28%

Buildingservices

10 Heat generation - 6%

Level 3


©LUWOGE CONSULT

SOLAR GAINS

• Optimization of orientation of the buildings

• Avoidance of massive shading due to buildings geometry

• Reduction of percentage of the window frame

• Reduction of reveal depths

• Implementation of window glasses with good g-values

HEAT RECOVERY

• Implementation of mechanical ventilation systems with effective heat recovery

• Controlling the air exchange exclusively by the ventilation system

INTERNAL GAINS

• Consideration of internal heat gains of the operation of a building

DISTRIBUTIONAL HEAT

• Implementing building services inside the thermal envelope


MAXIMIZING GAINS

-40

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-20

-10

0

10

20

30

40

50

60

1 2 3 4 5 6 7 8 9 10

kWh/m²a

GAINS (+ 26%) + 32%

Envelope 1 Roof

2 Wall

3 Floor

4 Windows/ Doors + 6%


Ventilation 6 Infiltration

7 Ventilation system +18%

8 Window ventilation

Use 9 Hot water/ internal gains + 7%

Buildingservices

10 Heat generation + 1%

Level 3


©LUWOGE CONSULT

Passive House criteria

NZEB │ PASSIVE HOUSE STANDARD

Nearly Zero Energy Building

in Passive House standard

• 1. HEATING/COOLING LOAD

PH/C < 10 W/m2 (physics)

or

HEATING/COOLING DEMAND

QH/C < 15 KWh/m2a (definition)

• 2. AIR TIGHTNESS

n50 < 0,6/h (efficiency)

• 3. PRIMARY ENERGY DEMAND

Qp < 120 KWh/m2a (definition)


©LUWOGE CONSULT

QH = QTransmission + QVentilation - QSolar - Qinternal

•QTransmission [KWh/m2a] =

AEnvelope [m2] * HT´ [W/m2K] * Fambient/ground * FReduction * GT [kKh/a] / ATFA [m2]

•QVentilation [KWh/m2a] =

ATFA [m2] * hRoom [m] * nV,equi,fraction [1/h] * Cair [Wh/m3K] * FReduction * GT [kKh/a] / ATFA [m2]

•QSolar [KWh/m2a] =

AWindows [m2] * Radiation [KWh/m2a] * gWindows * FReduction * hG / ATFA [m2]

•QInternal [KWh/m2a] =

0,024 [kh/d] * hd [d] * 2,1 [W/m2] * ATFA [m2] * FReduction * hG / ATFA [m2]

energy performance calculation

PHYSICS


energy balance

STANDARD BUILDING

©AN/MA / BASF France

coldest annual temperature

≥ - 1,1 °C

≥ - 6,6 °C (it)

≥ - 12,3 °C (fr, nl,uk, lu)

≥ - 17,7 °C (de)

≥ - 23,3 °C (se)

≥ - 28,8 °C

≥ - 34,5 °C

≥ - 40,0 °C

Energy Balance 40,5% -15,10 KWh/m2a

A/ATFA AEnvelope U/φ GT QT

Transmission 79,2% 177% 1.526 0,22 75 -29,5 KWh/m2a

Roof 43% 374,4 0,11 75 -3,5 11,7%

Wall 77% 666,4 0,13 75 -7,5 25,5%

Socle 4% 36 0,14 75 -0,4 1,5%

Basement 33% 288 0,17 75 -4,3 14,5%

Window 15% 129,6 0,85 75 -9,6 32,4%

Door 4% 32 0,85 75 -2,4 8,0%

Thermal Bridges 100% 864 0,025 75 -1,9 6,3%

nV V C GT QV

Ventilation 20,8% 0,125 2.160 0,33 75 -7,7 KWh/m2a

Infiltration 0,025 2.160 0,33 75 -1,5 20,0%

Mech. Ventilation 0,1 2.160 0,33 75 -6,2 80,0%

Fred. Awin. g Rad. QS

Solar Gains 52,7% 35% 129,6 0,6 375 11,69 KWh/m2a

North 10% 0,35 12,96 0,6 150 0,47 4,0%

East 20% 0,35 25,92 0,6 250 1,56 13,3%

South 50% 0,35 64,8 0,6 500 7,80 66,7%

West 20% 0,35 25,92 0,6 300 1,87 16,0%

Horizontal 0% 0,35 0 0,6 400 0,00 0,0%

Opaque 0,00 0,0%

T ATFA hd GI QI

Internal Gains 47,3% 0,024 864 210 2,1 10,5 KWh/m2a

Internal 0,024 864 210 2,1 10,5 100,0%

STANDARD


local adaption phase IX / certification

SÉNART - FR

Project owner FSM - les Foyers de

Seine-et-Marne

Architect A/NM/A



Sénart

STANDARD FLOOR


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envelope tec.

saving potential

FR - Sénart +2

location geometry

Sénart

FACADE │ VENTILATED WOOD CLADDING

Exterior


energy balance

SÉNART





Roof 33% 489,97 0,117 73 -2,8 9,4%

Wall 82% 1206,07 0,145 73 -8,6 28,6%

Socle 5% 72,51 0,164 73 -0,3 1,0%

Basement 21% 314,75 0,176 73 -1,3 4,5%

Window 18% 266,3 0,933 73 -12,3 40,6%

Door 3% 48,28 0,873 73 -2,1 6,9%

Thermal Bridges 166% 2447,23 0,023 73 -2,8 9,2%

nV V C GT QV


Infiltration 0,042 3.695 0,33 73 -2,5 39,3%




North 9% 0,26 24,1 0,5 155 0,31 2,7%

East 6% 0,17 16,7 0,5 307 0,28 2,4%

South 76% 0,31 202,7 0,5 507 10,24 88,5%

West 9% 0,32 22,8 0,5 313 0,73 6,3%

Horizontal 0% 0,00 0 0,5 498 0,00 0,0%

Opaque 0,00 0,0%

T ATFA hd GI QI


Internal 0,024 1478 243 2,1 11,6 100,0%

SÉNART N/S


Sénart

DETAIL


local adaption phase VIII / construction

CHÂLONS - FR

Project owner LA RENAISSANCE IMMO-

BILIERE CHALONNAISE

Architect EXP architectes

©EXP architectes


Châlons

GROUND / STANDARD FLOOR

10 5 10 m


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saving potential

FR - Châlons +3

location geometry

Châlons

FACADE │ VENTILATED METAL CLADDING

Exterior


energy balance

CHÂLONS





Roof 41% 343,6 0,117 68 -3,3 11,4%

Wall 90% 753,5 0,131 68 -8,0 28,1%

Socle 5% 38,2 0,150 68 -0,3 0,9%

Basement 33% 277,9 0,161 68 -2,0 6,9%

Window 19% 158,6 0,914 68 -11,7 41,2%

Door 4% 30 0,690 68 -1,7 5,9%

Thermal Bridges 165% 1386,2 0,014 68 -1,6 5,5%

nV V C GT QV


Infiltration 0,033 2.100 0,33 68 -1,9 36,3%




North 5% 0,18 8,4 0,59 123 0,13 1,5%

East 64% 0,26 101,9 0,58 329 5,96 68,8%

South 14% 0,21 22,5 0,57 419 1,33 15,4%

West 16% 0,15 25,8 0,50 184 0,42 4,8%

Horizontal 0% 0,00 0 0,00 379 0,00 0,0%

Opaque 0,83 9,5%

T ATFA hd GI QI

Internal Gains 55,0% 0,024 839,9 212 2,1 10,6 KWh/m2a

Internal 0,024 839,9 212 2,1 10,6 100,0%

CHÂLONS


Châlons

DETAIL


local adaption completed / Passive House certified

DARMSTADT - DE

Project owner Bauverein AG Darmstadt

Architect Planungsgruppe DREI

©Bauverein AG


Darmstadt

GROUND FLOOR (EXTRACT)


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envelope tec.

DE - Darmstadt +8

saving potential

location geometry

Darmstadt

FACADE │ EXT. INS. FINISHING SYSTEM (EIFS)

Exterior


energy balance

DARMSTADT





Roof 26% 921,7 0,130 79 -2,7 9,4%

Wall Cellar 3% 103 0,607 79 -0,8 2,7%

Wall 56% 1963,4 0,128 79 -5,7 19,7%

Socle 4% 122,5 0,162 79 -0,2 0,9%

Basement 18% 635,4 0,142 79 -1,1 3,9%

Basement Garage 8% 290,4 0,138 79 -0,5 1,8%

Window 24% 844,6 0,804 79 -15,3 53,3%

Door 0% 0 0,000 79 0,0 0,0%

Thermal Bridges 79% 2767,3 0,038 79 -2,4 8,3%

nV V C GT QV


Infiltration 0,023 8.738 0,33 79 -1,5 22,3%




North 33% 0,47 282,6 0,37 145 1,90 13,7%

East 6% 0,36 50,7 0,64 225 0,70 5,1%

South 54% 0,35 459,8 0,61 378 9,87 71,4%

West 6% 0,32 51,4 0,64 242 0,68 4,9%

Horizontal 0% 0,00 0 0,00 355 0,00 0,0%

Opaque 0,68 4,9%

T ATFA hd GI QI


Internal 0,024 3495 212 2,1 9,9 100,0%

DARMSTADT


Darmstadt

DETAIL


building performance

PROJECT TARGET COMPARISON

A = architectural quality

E = energy efficiency

C = cost efficiency A E C A E C A E C

Baseline

Standard Building 100% 115% 110% 105% 115% 110% 110% 105% 105%

75% high

100% standard 10 95% 10 104% 10 100% 10 96% 10 100% 10 103% 10 99% 10 89% 10 97%

125% low

structure 1 90% 1 110% 1 90% 1 95% 1 110% 1 90% 1 110% 1 85% 1 85%

exterior design 1 75% 1 110% 1 125% 1 80% 1 110% 1 125% 1 90% 1 100% 1 110%

interior design 1 110% 1 100% 1 90% 1 110% 1 100% 1 90% 1 90% 1 100% 1 110%

detailing 1 75% 1 115% 1 90% 1 75% 1 90% 1 90% 1 90% 1 75% 1 90%

construction 1 110% 1 125% 1 100% 1 100% 1 100% 1 100% 1 100% 1 75% 1 100%

place 1 100% 1 90% 1 90% 1 100% 1 100% 1 100% 1 110% 1 110% 1 95%

use 1 100% 1 100% 1 100% 1 100% 1 100% 1 100% 1 100% 1 100% 1 100%

size 1 100% 1 85% 1 90% 1 100% 1 110% 1 110% 1 100% 1 75% 1 90%

standard 1 110% 1 75% 1 120% 1 110% 1 75% 1 120% 1 100% 1 90% 1 110%

experience 1 75% 1 125% 1 100% 1 85% 1 100% 1 100% 1 100% 1 75% 1 75%

107%110%108%

DE-DARMSTADT

99% 99% 95%

FR-SÉNART FR-CHÂLONS


building performance

SCORING

CE

A

S

D

C

100%

95%

110%

105%

SÈNART

• ARCHITECTURE 95%

• ENERGY 104%

• COSTS 100%

CHÂLONS


• ENERGY 100%

• COSTS 103%

DARMSTADT


• ENERGY 89%

• COSTS 97%

thilo cunz architekt - eurhonet · thilo cunz │ architekt senior manager asia/europe luwoge...

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