1. Presented by:Beyene,Dagim
Reta, Tibebe
Jaiswal, Manish
Kejela, Kidist

2. Background
•Thisresearch is focused on concept,
trends, and ways to achieve the goal of
Zero Energy Building.
•Global warming and a probable energy
crisis are the root cause for the initiation of
zero energy buildings

3.  Doesn’t have any universal definition.
 Varies from country to country.
 Can be generalised as the building which
have the total energy output/production
equals to it’s total consumption on annual
basis.
 The source of energy is supposed to be
renewable with minimum carbon foot print.
 Furthermore, criteria's like net zero carbon
footprint can be added.

4. Percentage Space
Heating
Space
Cooling
Water
Heating
Lighting
Refrigeratio
n
Source: US Department of Energy

5.  In Europe around 40% of all energy is
consumed by buildings.
 Ultimately, one of the major source of Carbon
dioxide.
 Growing concern about global warming and
its impacts.
 Rising energy costs and energy crisis.

6. Country Low Energy Target
Austria Annual heating energy consumption below 60-40
KWh/m².
Belgium 40 % lower than standard levels, 30 % lower for office and
school buildings
Denmark 50% lower than the minimum requirement for existing
buildings.
Finland 40 % less energy consuming than current buildings.
France (40 - 65 )kWh/m² depending on the climatic area and
altitude.
Germany By 2020 buildings should be operating without fossil fuel,
energy requirements (60-40 )kWh/m² .
Netherlan 50 % reduction by 2015, 25 % reduction by 2010 both
ds compared to current code plans.
Sweden 20% decrease by 2020, 50% decrease by 2050 compared to
1995 consumption level.
Source: SBI (Danish Building Institute), European Strategies to move towards very low energy
buildings, 2008

8. • The BDCES groups the U-factor values based
on three geographical zones in South Korea,
• central, south and Jeju Island.
Table 3 Maximum Heat Transmission (U-factor) of Building
Envelope Components by Region

9.  The carbon reduction target of 2020, which
aims to reduce energy consumption by 30%.
 low carbon green growth. (Active concept
that advances the growth of new power
source)

10. Source:- Samsung C&T Corporation, sustainability Report 2010

11.  The first East-Asian to win the US Green
Building Council’s prestigious LEED
(Leadership in Energy and Environmental
Design) platinum status.

12.  Includes a 423m2 zero-energy house and a
298m2 public relations pavilion
 zero-emission
 green IT including a high performance façade
daylight sensors
 ground source heat pumps
 radiant floor heating system and
 high-efficiency lighting that optimizes and
balances energy and daylight.

13.  These systems reduce energy consumption
by 56% - the other 44% of energy is
organically harvested from photovoltaic
system, geothermal and wind power
generationrenewable sources
Source:- Samsung C&T Corporation, sustainability Report 2010

14.  163m2 of rooftop photovoltaic panels.
 21MWh annually
Source:- Samsung E&C Corporation, sustainability Report 2010

15. Green IT :- Energy Management System (EMS).
Source:- Samsung E&C Corporation, sustainability Report 2010

17.  Shutting down of nuclear plants
 Increase on price of oil
 Concern for green inittiative

18.  Solar energy
 Wind energy
 Geo thermal energy
 Bio fuel energy
 Hydro power energy
 Ocean’s power supply

19.  A house that consumes less energy than it
produces in annual base.
annual photovoltaic generation >1
annual energy consumption

21.  Built in kanagawa, near Tokyo
 Zero energy house
 Energy demand close to zero by adoption of
energy saving technology

22.  Using photovoltaic energy generation and
better building mechanism.
 Outer walls-234 mm thick and laminated of
new ceramics(PALC)of 80 mm thick.
 Windows-triple glass sash, which improve
thermal loss and air tightness.

23.  Excess power sold to power companies.
 Air conditioning-heat pump system,
 hot water heated during night time to benefit
from lower electric cost and reduce power
consumption at the day time at peak cost.

24.  Energy consumption of house is
8900kwh/year
 Pv generation is 8000 kwh/yr

25.  Heating -1600kwh
 Cooking -1200kwh
 Domestic hot water-2100kwh
 Heating and appliances-4000kwh
 Total -8900 kwh
 Additional cost 70,000 euro
 Saving from running cost 3000 euro/yr

28.  Greenest urban development on earth
 4.63 million euro.
 1000 houses
 Solar energy main source of power
 Lithium ion storage batteries, power to store
for a week
 Planned to be in total use by 2018

29.  Energy efficient office building used by the
city of Helsinki Environment centre.
 Completed in September 2011
 A perfect example of energy efficient
building in Finland.
 Total purchased energy consumption of
about 70 kWh/m^2
 Total energy Production was about 17
kWh/m^2.

30.  the window filled with Argon rather than normal air in order to
improve the insulation.
 Roof has been designed in such a way that it utilises the daylight as
much as possible .
fig: Roof structure of Viikki Environment Centre

31.  Solar panels mated with the façade
for maximum energy production.
 Extensive use of wood to reduce
carbon foot print.
 The ventilation system is Zero-specific
and equipped with heat recovery
system with almost 75% efficiency.
 All these renewable energy production
for almost 20% of the total energy
consumption
 Unique roof design to utilize maximum
daylight and reduce lighting energy
requirements
 The energy consumption for lightening fig: Southern Façade of Viikki
Environment Centre.
is further reduced by using LED lights.

32.  Each country’s understanding of ZEB concept
is unique.
 All countries emphasize the importance of
energy efficiency measures.
 adopting such requirement the countries
want to eliminate low-quality ZEBs.
 And significant influence of the occupants on
the energy use in buildings.

33.  Definition that aims:-
◦ minimize peak loads and ensuring a very low
energy demand of the building.
◦ for user-friendly buildings.
 Not too much work or complicated.
◦ Passive or Very low energy buildings
 cost-efficient solutions for achieving zero energy
buildings.