A zero-energy building is a building with zero net energy consumption and generates more energy annually than it uses from renewable resources like solar, wind, and geothermal. It reduces carbon emissions and dependence on fossil fuels. Key aspects of zero-energy building design include passive solar features, energy-efficient components, on-site renewable energy generation, and sometimes connection to the electric grid to export excess power. Zero-energy buildings offer long-term savings on energy costs but have higher initial construction costs than conventional buildings.

1. Zero Energy Building

2. Zero Energy Building
Presented By –
Nabila, Kashfia Tajmim 15-29043-1
Akter Tanjila 15-29069-1
Rawdah 15-28283-1
Sagir, Chy. Miftah Mahmood 14-25933-1
Khan, Md. Nafis Ul Hoq 14-27150-2
To-
Mr. Rethwan Faiz Sir
Assistant Professor, Faculty of Engineering
American International University-Bangladesh

3. • What is Zero Energy Building?
• Design and Construction
• Basic Construction of a Zero Energy Building
• Energy Harvest
• Net Zero Energy Building connected to grid
• Zero Energy Building versus Green Building
• Where can Zero Energy concept be applied?
• Advantages and Disadvantages
Contents

4. • A zero-energy building is a building with zero net energy
consumption.
• Generates more energy than it consumes.
• Buildings contribute less overall greenhouse gases to the
atmosphere than a similar non zero-energy building.
• Reduce carbon emissions and dependence on fossil fuels
which is the Zero Net-Energy Consumption Principle.
What is Zero Energy Building?

5. * Passive solar building design:
Walls, floors and windows distribute heat during winter and
reject the solar heat during summer.
* Building energy simulation:
Predicts the performance of ZNE building depending on the
energy usage before it is built.
* Energy saving features:
Includes heating and cooling loads, insulation and ventilation
depending on climate zones.
Design and construction

6. Basic construction of a ZERO ENERGY building

7. • Choosing a site with the necessary assets and
knowing about its limitations.
The Site

8. • Zero energy should be designed in such way that more Sun
Rays can be used.
More exposure to Sunlight

9. • Solar cells
• Wind Turbines
• Solar Thermal Collectors linked to Seasonal Thermal Energy
Storage
• Solar Thermal Collectors – collects by absorbing sunlight.
• Seasonal Thermal Energy Storage (STES) – storage of heat or
cold up to several months.
To cope with the fluctuation demand Zero Energy Buildings are connected
to the electricity grid.
Energy Harvest

10. • Solar panels placed on the rooftop absorbing as
much of the energy from the sunlight.
• The energy can be used for cooking, heating, etc…
Solar Energy

11. Wind Energy

12. Thermal Energy

13. Net Zero Energy Building Connected to Grid

14. • Green Building is a building process depending on
the environment and efficient resources available.
• Green Building reduces negative impact on the
environment.
• Zero Energy Building reduces more energy usage and
greenhouse gases emission.
• Zero Energy building may not be considered GREEN
in all areas.
‘Zero energy building’ versus ‘Green building’

15. • Residential areas
• Commercial Buildings
• Industries
• New Construction and existing buildings
Where can ‘ZERO-ENERGY’ concept be
adapted?

16. • Increased comfort .
• Free of future energy cost increment.
• Reduced total cost of ownership due to improved
energy efficiency.
• Reduced total net monthly cost of living.
• Reduced risk of loss from grid blackouts.
Advantages

17. • Initial costs can be higher.
• Very few designers or builders have the necessary
skills or experience to build ZEB.
• New energy rating systems are being introduced.
• Solar Energy capture is only applicable for sun prone
areas.
Disadvantages

18. • https://energy.gov/eere/buildings/downloads/comm
on-definition-zero-energy-buildings
• http://zeroenergyproject.org/build/twelve-steps-
affordable-zero-energy-home-construction-design/
• https://living-future.org/net-zero/
References

19. Thank You