SANS 10400 – Fenestration and Energy Efficiency Explained

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FENESTRATION AND ENERGY EFFICIENCY – SANS 10400 xa

This section basically focuses on the encouragement of energy efficiency in fenestration in the South African context based on SANS 10400xa regulations. It has been divided into a number of sections, all of which answers a specific question about the section.

WHAT IS SANS 10400 – ENERGY EFFICIENCY ALL ABOUT?

The overall energy efficiency practice is more of a planned and progressive plan and cause of action dating as far back as 2006. So, there have been some institutions and regulations which have been employed in the overall development of the SANS 10400.

The purpose of the SANS 10400 regulation is therefore to reduce energy usage by reducing heat transfer and allowing the development of the building envelope.

LOWERING ENERGY CONSUMPTION

Following the current status, there is no doubt that the South African national electricity grid is under pressure. And therefore, since the limited supply is struggling to keep up with the growing demand. Usually, the cost of generating electricity from coal is high and this is not going to decrease any time soon.

  • Unsustainable Use of Coal in Energy Generation

Moreover, the overall pollution which results from the procedure escalates with each passing day. This possess a significant effect on the environment such as the water bodies. On the long haul, these harmful effects will pose a great danger to the preservation of the environment.

  • Greenhouse Gas Emissions

Normally, about 3/5 of the overall world electricity is generated for either commercial or residential buildings. Along these lines, it is worth noting that the building sector is one of the major contributors to the overall greenhouse gas emissions.

As such, the implementation of the SANS 10400 and 204 will assist to combat the environmental pollution which result from the current scenario.

COMPLIANCE WITH ENERGY REGULATIONS – SANS 10400

With the introduction of the SANS 10400, the South African government is targeting the overall protection of the environment for the benefit of all.

Therefore, it falls upon the government to ensure that regulations such as the SANS 10400 are implemented and enforced in order for the country to achieve sustainable energy efficiency targets.

  • Energy Efficiency in Existing Buildings

Acquiring some of the traits from other countries, the government is also focusing on the improvement of additional energy efficiency strategies of existing buildings.  This is done by retrofitting some of the SANS 10400 strategies and ensuring that energy efficient measures are implemented in existing buildings.

  • The Role of Architects in Implementing SANS 10400

So, what is worth noting from the introduction of SANS 10400?

It is quiet clear that in respect to the specifications and standards for insulation and water heating, architects have a key role in making sure that the aims of SANS 10400 are seen through.

It is good to note however that some of the requirements within the SANS 10400 are actually not new at all.  Architects have long been focusing on making buildings that are more comfortable to those who live in them.

So using their skills and experience, architects will be able to reduce the rate of growth in demand for grid electricity.

In doing so, architects will ultimately be key in achieving overall energy efficiency benefits not only for their clients but for entire country.

The Role of Other Indusrty Bodies 

  • AAAMSA

Back in 2006, this body established the South African Fenestration and Insulation Energy Rating Authorization.

  • SAFIERA

This is the NFRC representative in South Africa under the administration of AAAMSA as seen above.

  • BUILDING AND CONSTRUCTION SECTOR.

There are two key things which are considered in this area, these are:

    • Building envelope research like how walls and roofs have to be constructed.
    • Research on materials such as glass and insulation as well as the best types of materials to use in specific climatic conditions.

THE FENESTRATION and SANS 10400 ROADMAP

There have been a number of sequential steps forging the overall and current energy efficiency status and the creation of regulations. These are:

  • AAMSA initiated the adoption of the ASTM and the NFRS standards via the assistance of SABS, which is now used for determining the fenestration performance.
  • There was the setting up of a laboratory which would in effect test the fenestration of products through the Thermal Testing Laboratory.
  • The collaborative agreement between the DoE/DoH and the AAAMSA was a major impact to the current energy efficiency status.
  • The laboratory transfer to the SABS and the expansion to a full Building Envelope Testing Service – BETS.
  • Prudent and adequate measurement as well as verification of test results using SAFIERA.

Owing to the fact that it is not wise to put all your eggs into one basket, some of the steps which are more crucial have not been achieved yet, these are:

  • Provision of energy ratings for all the fenestration products.
  • Administering independent and 3rd party certification as well as labelling program via SANAS.
  • A certified product directory which will contain information on thousands and thousands of approved energy fenestration products.

WHAT DOES THE FENESTRATION RATING PROCESS INVOLVE?

This simply involves 3 main things, which are:

  • Glass suppliers have to make sure that they actually supply their samples to PFG building Glass for any testing which may be deemed necessary for utmost energy efficiency.
  • Any sort of spectral optical properties have to be measured and then submitted to South African Glass Data Base if they are not registered with the IGDB.
  • The only software which is going to be used for the purpose of any sort of simulations is the one which has been developed by Berkeley. It will be used for the simulations of:
    OPTICS: determine the spectra data for any sort of glazing products.
    THERM: helps in the analysis of two-dimensional heat transferring via building products.
    WINDOW: basically analyzes the overall window thermal performance.

WHY IS TESTING AND RATING FOR ENERGY EFFICIENCY IMPORTANT?

Five main reasons are set as to why it is important to test and rate products. These are:

  • Basically help in verifying compliance with the National Building regulations SANS 10400:XA Energy Usage in Buildings.
  • EE Building Envelope if allowed to apply for the 12L EE Taxation incentives which actually tends to benefit customers more.
  • Usually helps in assisting professionals in making informed decisions appertaining any sort of Rational Design (will be discussed in detail in the course of the section)
  • Basically allows for promotion of energy efficiency through the provision of a baseline which will be used in the development and improvement of products.
  • Acts as a basis for performance comparison.

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