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
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
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?
* 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
Basic construction of a ZERO ENERGY building
Choosing a site with the necessary assets and knowing about its limitations. The Site
Zero energy should be designed in such way that more Sun Rays can be used. More exposure to Sunlight
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
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
Wind Energy
Thermal Energy
Net Zero Energy Building Connected to Grid
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 ’
Residential areas Commercial Buildings Industries New Construction and existing buildings Where can ‘ZERO-ENERGY’ concept be adapted?
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
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