© DGNB 2017 | 1
© Groß & Partner
Prefabricated Buildings in Europe -
Assessment of Ecological Aspects with LCA
Green Building & Prefabrication Forum
Beijing 2.11.2018: Johannes Kreissig, German Sustainable Building Council
© DGNB 2017 | 2
… to keep the rise of global temperature under
2 Degree, below 1,5 Degree if possible …
Climate Targets
© DGNB 2017 | 3https://www.mcc-berlin.net/en/research/co2-budget.html
To achieve < 2°we have a remaining
CO2 emission budget
of max. 687 Gt CO2
until the year 2100
Global emissions today:
40 Gt CO2 /a
IPCC, Climate Change 2014:
Mitigation of Climate Change
Our global CO2 budget
© DGNB 2017 | 4
D G N B
德国可持续建筑委员会1.
可持续是新常态
© DGNB 2017 | 5
Our Vision 愿景:
Implement the planning, construction
and operation of sustainable
buildings and neighborhoods
as the NEW NORMAL for the
entire built environment
在建筑和城区中实现可持续的设计、施
工和运营，使之成为建筑业的新常态
© DGNB 2017 | 6
DGNB – the sustainable construction network
>3.800 Certified buildings
in 21 countries
认证建筑分布于21个国家
1.200 Member organisations
in 30 countries
会员企业来自30余国家
500Volenteers
志愿专家团队
Trained experts in
35 countries
咨询师来自35个国家
Key instruments 工具:
- Education 教育培训- Certification 认证- Lobbying 宣传
Visitors (2017) in the
DGNB office 2017年接受到访
3.100 3 6.100
Investors投资方 9%Others其他 6%
Builders 建造商 5%
R&D 科研单位5%
NGOs 非政府组织3%
FM 运营商1%
Individuals个人 1%
Governments政府 1%
Operators运营商 1%
Manufacturers生产商20%Architects建筑师 18%
Engineering 工程师 16%
Consulants咨询机构 15%
S t r u c t u r e D G N B m e m b e r o r g a n i s a t i o n s
DGNB会员组成
DGNB – the sustainable construction network
>3.800 Certified buildings
in 21 countries
认证建筑分布于21个国家
1.200 Member organisations
in 30 countries
会员企业来自30余国家
500Volenteers
志愿专家团队
Trained experts in
35 countries
咨询师来自35个国家
Key instruments 工具:
- Education 教育培训- Certification 认证- Lobbying 宣传
Visitors (2017) in the
DGNB office 2017年接受到访
3.100 3 6.100
Our ins t ruments工具
Network of experts in Germany and global
德国及国际范围的专家网络
Educat ion / t ra in ings
教育/培训
Cert i f icat ion of bui ld ings and distr icts
建筑及城区认证
DGNB – the sustainable construction network
>3.800 Certified buildings
in 21 countries
认证建筑分布于21个国家
1.200 Member organisations
in 30 countries
会员企业来自30余国家
500Volenteers
志愿专家团队
Trained experts in
35 countries
咨询师来自35个国家
Key instruments 工具:
- Education 教育培训- Certification 认证- Lobbying 宣传
Visitors (2017) in the
DGNB office 2017年接受到访
3.100 3 6.100
DGNB Academy DGNB 学院
Consultant and Auditor trainings
Sustainability basic knowledge
Global network of experts
The DGNB cer t i f i ca te DGNB 认证
The global Benchmark for Sustainability国际化的可持续建筑指标
Criteria and Benchmarks are adapted to
要求和指标的适配基础
Use profiles 使用类型(housing, office, hotel-, school, retail, logistics, production, … and districts and interiors 住宅，办公，酒店，教育，商业，物流，工业…城区，内装)
The DGNB cer t i f i ca te DGNB 认证
The global Benchmark for Sustainability国际化的可持续建筑指标
Criteria and Benchmarks are adapted to
要求和指标的适配基础
Stages in life cycle 项目阶段(design and new construction, renovation, buildings in use, existing buildings 设计，新建，改建，既有，运营),
Regional characteristics 地域特点
O U R G O A L 目标 :
A F U T U R E P R O O F
B U I LT E N V I R O N M E N T
适应未来的建筑环境
Design and bui ld bet ter bui ld ings and d is t r ic ts
us ing
- hol is t ic ,
全向的综合评估
- l i fe cyc le based着眼于项目全寿命周期
- per formance based opt imisat ion基于表现的优化
O u r p r i n c i p l e s
DGNB criteria overview
DGNB 核心要求
• Environmental quality
环境质量
• Economic quality
经济质量
• Sociocultural and
functional quality
社会文化及功能质量
• Technical quality
技术质量
• Process quality
过程质量
• Site quality
区位质量
L C A - L i f e C yc l e
A s s e s s m e n t
2.
Building life cycle
Product stage
Construction
Operation
Maintenance
End-of-Life
Recycling
T h e L i f e C yc l e
S c o p e f o r s c r e e n i n g L C A
Building components
Operation
Quantity survey of building components
Environmental data for each component
Energy demand
Environmental data for energy production
x
x
E x a m p l e s3.
E x a m p l e : L i f e C y c l e To w e r b y C R E E
A b u i l d i n g w i t h w o o d b e a r i n g s t r u c t u r e i n D o r n b i r n / A u s t r i a
Architects: Architekten Hermann Kaufmann ZT
Dimensions: H: 27 m, W: 13 m, L: 24 m
Architecture: Facades made of metal composite
sheets (recycled metal),
visible wooden bearing structure
Energy standard: Passivhaus-Technology
NBA:
BGF:
2.096 m²
2.327 m²
GV 8.073,5 m³
Source: Fraunhofer IBP, 2016, Pictures: © Cree
L i fe Cyc le Tower by CREE
L i fe Cyc le Tower by CREE
L i fe Cyc le Tower by CREE
L i fe Cyc le Tower by CREE
L C T D o r n b i r n : A u s t r i a n E n e r g y P a s s p o r t
Energy performance:
End energy
- Heating: 14,06 kWh/m2a
- Cooling: 14,66 kWh/m2a
- Lighting: 15,01 kWh/m2a
E x a m p l e 1 :
L i f e C y c l e To w e r – L C A R e s u l t s
Source: Fraunhofer IBP, 2016 Picture: © Cree
L i f e C y c l e To w e r : C a r b o n e m i s s i o n s p e r y e a r
* CO2 emissions from construction total life cycle allocated to 50 years of use
L i f e C y c l e To w e r : C a r b o n i n t e n s i t y o v e r 5 0 y e a r s
Boundary conditions:
Office space for 80 people
57W / person user appliances
Electricity grid mix Austria
assumed to be constant over time
Energy supply from building integrated PV
net surplus energy building
Example: S8 HamburgResidential building
Prefabricated concrete elements
with ETICS
No basement
Optimized building envelope
Passive-house windows
20% additional insulation
Geothermal heat pump COP > 5
Photovoltaics with 8,6 kWhp
Energy demand 65% below legal
requirement, prior to production
by PV
Energy demand
32,04
90,00
-
25
50
75
100
1
primary energy /m2a
PE DESIGN PE reference
Energy supply from building integrated PV
net surplus energy building
Payback in the life cycle
Environmental LCA
according to DGNB parameters
Use stage (provided by PV)
PV exceeds building energy demand
by factor 2,7
Surplus applied for user appliances
and to charge e-mobility worth of
25.000km/a
Surplus replacing Grid Electricity +
Fuel depending on real application
German Sustainable
Building Council - DGNB
Johannes Kreissig
CEO DGNB
email: [email protected]
phone:+49 711 722322 -0
www.dgnb.de
New Construction Homes
Allkauf Haus GmbH
DGNB Certificate in Gold
Thank you for your attention!
谢谢!
Bild: © allkauf haus GmbH
