Design of Passive Houses - New and Existing Buildings

Torben Esbensen, Consulting Engineer M.Sc., Denmark – Passive House Nordic - October 17, 2013

d

kkkppp

kWh/m²/year Living areas excl. lighting Office areas incl. lighting

BR 2010 BR 2015 BR 2020

52,5 30 20

71,3 41 25

Zero Energy Buildings Plus Energy Buildings Passive Houses

0 ÷

15 (for heating)

0 ÷

15 (for heating)

NZEB-Nearly Zero Energy Buildings

<50% of the Current Building regulation. Renewable Energy share >50% based on on-site renewable (not officially approved)

Danish Building Regulations (BR)

Max. energy consumption in buildings:

/ Side 2

• Insulation of walls and roof (300-400 mm)

• Insulations shutters in front of windows

• Heat recovery from balanced ventilation

system (own design)

• Heat recovery from waste water

(not working)

• 40 m² solar collectors (own design)

• Seasonal heat storage (30 m³)

• Space heating and hot water excl. solar

heating: 2.300 kWh:120 m³ 20 kWh/m²/year

• First Passive House ?

The Zero Energy House, 1974

Technical University of Denmark - DTU

18.10.2013 / Side 3

• Information center for the Brundtland Report

• The building shows, how the demands can be fulfilled

Brundtlandcentre, Toftlund, Denmark,1995

18.10.2013 / Side 8

• Reduced energy demand

• Atrium as temperature and

ventilation buffer

• Automatic solar screening

• Heat recovery

• Daylight shelves

• High insulation standard

18.10.2013 / Side 9

• Energy production

• Solar cells in atrium roof

• Sun screening

• Energy production

• 223 m2 (182 m2 in the roof)

• +M Architects, Esbensen A/S and Sloth

Møller A/S

• Energy efficient building – passive house

standard

• No active heating system

• Only heated by ventilation air

• Constructed 2008

Comfort Passive Houses Vejle, Denmark

18.10.2013 / Page 10

• Focus on passive features

• Natural ventilation

• Demand controlled

• Preheating and cooling of air

• Dynamic sun shading

• Energy consumption less than

25 kWh/m² per year

• Passive house certified

18.10.2013 / Page 12

Komforthusene, Vejle

Komforthusene

+M Architects

Esbensen A/S

Sloth Møller A/S

2008

198 m2

LEK 1

Passive house certified

0

10

20

30

40

50

60

70

80

90

kWh

/m2

/år

Developer:

Architect:

Engineer:

Built:

Area:

Energy Class:

Other:

• Arkitema Architects and Esbensen

• 99 youth apartments, 12 floors

• Energy class 2025

• 0 kWh operating consumption

• 150 m2 solar collectors

• 700 m2 solar cells

• Integrated in facade and roof

• Natural ventilation

• Optimizing daylight distribution

• Heat recovery from waste water

• Construction phase 2011-2012

Youth Residences, Aarhus Harbour, Denmark

18.10.2013 / Page 16

”Youth Residences, Aarhus Harbour, Denmark”

• Lund Hagem and Atelier Oslo

Architects, Esbensen Engineers

• 4 low energy high rise buildings

• 159 dwellings, 12-18 floors, 19 000 m2

• Passive features

• Daylight

• Passive solar heating

• Natural ventilation

• 45-50 % window ratio with floor to

celling windows

• In construction phase 2013

Lervig Pier, Stavanger, Norway

18.10.2013 / Page 18

• GASA Architects and Esbensen Engineers

• 5000 m2 hall

• 4000 exhibition guests or 8000 concert

guests

• Energy reduction: 50% compared with

building regulation 2011

• Construction phase: 2013

Stavanger Exhibition Hall, Oilfield Centre, Norway

Active and Passive Solar Energy Buildings 18.10.2013 / Page 19

• Project by Velux A/S, Aart

Architects and Esbensen

Consulting Engineers

• Active House with focus on

indoor climate, daylighting and

visual comfort

• Constructed 2008

Model Home 2020- ”The House For Life” Aarhus, Denmark

18.10.2013 / Page 20

• Test site for a new combined solar

heating and heat pump system for

small buildings

• Velux A/S and Danfoss A/S

• 50 m2 PV-cells integrated in roof

• Solar driven pump for hot water

and indoor heating

• Intelligent control of heating,

ventilation and solar shading

• Presence detector

• Plus-energy house during the first

year of occupancy

18.10.2013 / Page 21

Langkærparken AL2Bolig, Aarhus, Denmark

NOVA5

Esbensen A/S

Sloth Møller A/S

2012

Ca. 1700 m2

-Energy renovation of concrete buildings

from 1960.

- Four energy classes:

BR10, BR15, BR20, Passiv House

- Heating demand reduced with 90% from

200 to 20 kWh/m²/year

Architect:

Engineer:

Built:

Area:

Client: SydEnergi

General contractor: Hoffmann A/S

Architect: GPP Architects A/S

Energy design: Esbensen Const. Eng. A/S

Construction: Sloth Møller Cons. Eng. A/S

Passive house

certification: Passivhus.dk

Floor area: 10.700 m² (420 employees)

Construction

completed: June 2013

SE’s new Passive and Plus Energy Headquarter in Esbjerg, Denmark

18.10.2013 / Page 23

Energy saving measures:

• Compact building construction

• Daylighting design

• Energy efficient lighting

• Thermo active constructions

• Natural ventilation

• Energy efficient hybrid ventilation

• Passive cooling from 10 km soil pipes

• 2.000 m² building integrated solar PV panels

producing 250.000 kWh electricity per year

• Space heat demand: 8,2 kWh/m²∙year

• Useful cooling demand: 12 kWh/m² ∙year

• Pressurization Test Result: 0,1 h-1 (max. 0,6 h-1)

SE’s new Passive and Plus Energy HQ in Esbjerg, Denmark

18.10.2013 / Page 24