sdaarchi SDA Architect Net Zero Energy Buildings in Green and Sustainable House Floor Plans

Certifying Bodies for Net Zero Energy Buildings

The certifying bodies for Net Zero Energy Buildings in the US A are :
A) Department of Energy
, DOE, an equivalent to the Malaysian Ministry of Energy
B) Zero Energy Commercial Building consortium
C) New Building Institute. NBI
A nonprofit organization that provides research and improved energy performance in commercial buildings
D)International Living Future Institute

The Programs surrounding the Net Zero Energy Buildings are :
1)2030 Challenge
The top 80% of 10 Architectural firms and 70% of the top 20 Architectural firms use The Challenge 2030.whereby all developments, new buildings and major renovation shall be carbon neutral by 2030 in the US and thereby reducing the temperature by 2 degree below the pre-industrial times.Net Zero Energy Buildings are also refereed too as Zero Energy Buildings.

2)Ashrae Vision 2020
Ashrae is a strong supporter of NZEB, and where Ashrae Vision 2020 was developed to promote energy Efficiency. NZE is defined as uses as much energy as it produces as measured at the site.

The Industry Codes and Regulations  surrounding the Net Zero Energy Buildings  in the world are: 
1)Security Act of 2007
2)Energy Independence and Security Act( Malaysian Renewable Energy Act)
3)California Public Utilities Commission
4)Massachusetts Zero Energy Building Task Force

5)European Union
The parliament passed a directive to achieve NZE by 2019 but focused on residential buildings and not commercial buildings: UK-Zero Carbon Hub to be carbon neutral by 2016, Germany-Passivhaus, Netherlands-energy neutral by 2020, France to be Energy positive by 2020.

The Building Codes surrounding the Net Zero Energy Buildings  in the USA are:  
1)IgCC– International Green Construction Code
This code is developed in conjunction with AIA,USGBC (MGBC-a Malaysian equivalent body –Malaysian Green Building Council) , 2)ASHRAE,ASTM,IES
3)CalGreen, California Green Building
4)Standard 189.1

The Building rating and Energy Labelling Systems surrounding the Net Zero Energy Buildings  in the USA are:

1) Energy Star
Is an energy labelling program of EPA( Environmental Protection Agency) and DOE( Department of Energy) It labels energy efficient products, homes, and commercial buildings. It scores on a table of 1 to 100.100 is a top performer. Energy Star does not recognize NZEBs. But the NZEB would score 90 in this program.
2) Leed/Green Building Index
The energy efficiency is the first and primary focus of the certification, one cannot obtain a platinum certification without designing for a high performance building. Incidentally the Net Zero building would easily obtain the Platinum with a marginal additional cost
3) Living Building Challenge by International Living Future Institute
Defines Imperatives for Net Zero Energy:

  • Net Zero Energy-if this imperative is not achieved it will not be qualified for the Living Building Challenge. The definition of NZEB are on: renewable energy, photo voltaic, wind turbines, water powered micro turbines, direct geo thermal. Biomass or combustion of any kind is not allowed. Hydrogen cell is allowed if energy is fueled by Hydrogen. Off grid connection is a must.
  • Site Imperatives-Site is restricted for gray fields and brownfields
  • Equity Imperatives-fresh air, sunlight and natural waterways
  • Beauty Imperatives-Beauty, spirit, inspiration and education

 

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Green architect Net Zero Energy Buildings Architect

 

 

 

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Prepared by Ar. Perumal Nagapushnam

Site Analysis for Net Zero Energy and Green Building

Net Zero Building building site analysis

Green building site analysis

 

In carry our a site analysis the following considerations should be considered:

  • North direction- Solar Path

The North directions should be established for the site, as this will help the analysis of the solar path. This will help to study which of the side of the building is heated up and which part of the building need special insulation.

The setting sun during summer is the part that needs treatment (insulation or louvers shading for window). It is necessary to avoid the suns heating sun to fall on the wall as the heat is thermally conducted into the building. Winter setting sun is desirable as the heat gain is necessary to keep the building warm. In fact this is the side where a Trombe wall is placed to keep the building warm during winter.

The solar path is easily studied by using software’s such as sketch up and Revit’s Vasari and Rivet’s Ecotect or Design Studio. These soft-wares will help evaluate where sun is setting, but some of these soft wares evaluates the relatively hottest part of the building and even the amount of energy required for a specific model designed. And the solar path with these soft wares combined will help make design decisions.

 

  • Wind direction for Net Zero Energy and Green Building

The direction of the wind s and the   strength of the wind and the season of the winds will help you to understand for the following design considerations.

  1. Direction of winds can use in the cooling of corridors and courtyards and public spaces.
  2. Strength of the winds if is beyond 5m/s can be used to generate renewable energy for the clean energy in place of energy from fossil fuels.
  3. Obstruction to the use of winds sources have to be identified.

 

  • Thermal energy potential sources for  Green Building

Sources of renewable energy should be identified, such small streams, geothermal sources or wind energy and potentials for photo voltaic sources of energy.

  1. a) A small stream could generate hydro- electricity through out the day.
  2. b) Proximity to geo thermal ground can be used as a source for energy for building through out the day.
  3. c) The photo voltaic energy is limited to use only when the sun is visible, without clouds in the sky and not available at night.
  • The topography of site for Net Zero Energy and Green Building

The topographical features of the site is necessary such as the contours, valleys, slopes, cliffs, the locations of streams, the main roads entrances façade views and other features that may be potentially an advantage to the site. Connections of utilities such as telephone connections points, water supply connections, sewerage connections points and power connections points.

 

  • Vistas and view for Green Building

The location of good panoramic view and potential vista creations from the drive in and main entrances should be noted for designing purposes. The setting sun, rising suns in the morning views, or view of the beach, mountains or night views of the cities are the features you may want to look out for and if available they need to be identified.

 

 site analysis for Green building

view of site analysis for Green building

  • Adverse situations- smell, harsh winds for  Green Building

The harsh wind during the winter season should be diverted from the building using landscapes or wall, cold wintry winds can conduct the heat away from the building and this will cause the energy bill to escalate.

Forest in the Office AIr Quality conceptIf the site has poor air quality  especially if the site is confronting a busy main road , that eco-green architect would consider ways for the poor air quality to be scrubbed clean so that air quality is maintained. the ecological parts of the site could be maintained for air to be processed. read on why green design can process the air by ionizing the air and removes the dust in   the air and remove air pollutants such as the dirty dozens.

Prepared by Green Architect Perumal Nagapushnam

http://www.sda-architect,com/