GUIDEDE BY :- SHAILESH KATARIA

MAHAVIR SWAMI COLLEGE OF ENGG. & TECH.

PATEL PATIK B. 131110106089PATEL YASH R. 131110106098SHAH NAISHAL 131110106109THUMMAR PRITESH R. 131110106119CHAVDA VIVEK L. 131110106127

PRESENTED BY :-

NET - ZERO ENERGY BUILDING(NZEB)

Project Aim :-

ABSTRACTA zero-energy building, also known as a zero net energy (ZNE) building, net-zero energy building (NZEB), or net zero building, is a building with zero net energy consumption, meaning the total amount of energy used by the building on an annual basis is roughly equal to the amount of renewable energy created on the site or in other definitions by renewable energy sources elsewhere. These buildings consequently contribute less overall greenhouse gas to the atmosphere than similar non-ZNE buildings. They do at times consume non-renewable energy and produce greenhouse gases, but at other times reduce energy consumption and greenhouse gas production elsewhere by the same amount. Traditional buildings consume 40% of the total fossil fuel energy in all over the world and are significant contributors of greenhouse gases.The zero net energy consumption principle is viewed as a means to reduce carbon emissions and reduce dependence on fossil fuels and although zero-energy buildings remain unco

Literature Review

The following is a review of literature related to ZEB definitions and research projects. There viewed literature is divided into a number of main important topics for the discussion of ZEB definitions.

1. Energy focus

Total energy demand in the building is a sum of thermal and electricity demand; however, many studies focus only on one demand neglecting the other. This issue is raised by Able, (1994): “Many low-energy building projects seem to have been based on the idea 'decrease heat supply at any cost'. In some cases, this has resulted in 'zero-energy buildings' which, it is true, do not need any heat supply but do, instead, indirectly need electricity, e.g., to operate the heat pump included in the system.”

2 . Energy Supply system

The scientific publications focus either on off-grid ZEBs or on-grid ZEB. The main difference between those two approaches is that, the off-grid ZEB does not have any connection to the energy infrastructure, thus it does not purchase energy from any external sources, and the boundaries for the balance calculations are within the building. The on-grid ZEB, in the literature also named “net zero” or “grid connected”, is the energy producing building connected to one or more energy infrastructures; electricity grid, district heating and cooling system, gas pipe network, biomass and bio fuels distribution networks. Therefore, it is has a possibility for both buying and selling energy from/to the utility grid. This division is also well noticeable in the ZEB definitions.

3. Renewable energy optionsIn a ZEB definition it is necessary to define the

supply-side of the renewable energy sources. According to Torcellini, et al. (2006) there are two options: on-site supply or off-site supply. Within the on-site supply authors distinguish building footprint and building site. Within the off-site supply the building either uses RES available off-site to produce energy on-site, or purchase off-site RES.

TOTAL ENERGY CONSUMPTION DIAGRAM

ZEB CONCEPTS

1) Net Zero Site Energy2) Net Zero Source Energy3) Net Zero Energy Costs4) Net Zero Energy Emissions

WHY ZEB ?

• Reduces Energy Consumption• Reduces Green House Gases (Carbon Emissions) & Global Warming• Reduces Dependence on Fossil Fuels• Reduces Ozone Depletion• Reduces Climate Change• Protects Our Environment for Future Generations

ZERO ENERGY STRATEGIES

Strat

Energy demand

Load demand Air flow simulation

Colling load

Renewable sources

identification

Economical and

environmental benefits

Maintenance

Reneweable resources

Climate analysis

Methodology

Process of construction

Current StatusDevelopment Efforts:• The Google photovoltaic campus• The Microsoft 480-kilowatt photovoltaic campus• Zero Energy Home model for India presented by 3C company at Acres 2011

• India’s first net zero energy building• Constructed with adoption of solar passive design and energy-

efficient building materials.• Building boasts an earthquake-resistant structure with a total

plinth area of 31,488 sq. m. • More than 50 per cent area outside the building is a soft area with

plantation and grass.• The building has a robotic parking system in the basement that

can accommodate 330 cars. • Thin-client networking system has been provided instead of

conventional desktop computers to minimise energy consumption.• Design allows for 75% of natural daylight to be utilised to reduce

energy consumption.•  Installed capacity of 930 kW peak power, the building has the

largest rooftop solar system among multi-storied buildings in India.• Union environment minister Prakash Javadekar showcased the

building to United Nations secretary general Ban Ki-moon on 13/1/15

The Indira Paryavaran Bhavan.

ConclusionWith the advancement in renewable

technology, Net Zero Energy Buildings are the future. Many governments have framed Zero Energy building laws. Few governments are also providing subsidies to individuals and organizations for creating Zero Energy Buildings. But the goal of zero energy buildings would not be fulfilled till the time all the people don’t understand their responsibility and contribute towards reducing energy consumption.

Future Planning • Find the commercial Building in next few day• Case Study for this commercial Building• Convert this Commercial Building in NZEB and compare the Costing and give advantages for NZEB

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