Author: dga.energy Admin
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Why SANS 10400 XA is important
In April 2014 atmospheric carbon dioxide levels exceeded 400 parts per million for the first time in recorded history. The readings are taken hourly at Mauna Loa in Hawaii and updated daily on the NOAA website and as of 11th January 2018 are already at a value of 408.74 ppm The “Keeling curve,” overseen by…
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Sizing Heat Pumps
In order to ensure that the heat pumps you specify will perform adequately all year round it is vital that they are accurately specified in terms of their CoP Coefficient of Performance and also their kW power capability. The performance and effectiveness of heat pumps varies considerably between the seasons and in the various climate…
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The truth about glazing
In providing Rational Design energy assessment services we have modelled and assessed every classification of property type, in every climate zone in the country, and are yet to see any single building that couldn’t be shown to be fully regulatory compliant with single-glazed clear glass when alternative more cost-effective design solutions could be brought into…
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What ‘works’ in the Eastern Cape…?
We have extensively modelled residential properties in the Eastern Cape climate zone with interesting results – what ‘works’ in Cape Town does not necessarily work in the milder Eastern Cape climate in Port Elizabeth, Cape St Francis or Plettenberg Bay, etc. Every property will respond differently of course dependent on orientation, internal volume, effectiveness of…
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Rational Design for ‘F1 Large Shops’
If the glazing-to-net-floor-area percentage is less than 15% then the SANS 10400XA prescriptive deemed-to-satisfy compliance route may appear to be the most simplistic path to follow on F1 classification projects. We have modelled and assessed numerous retail stores this year and without fail it has proven that substantial long-term running cost savings can be brought…
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H4 Residential Dwelling KwaZulu Natal
We have done Rational Designs on literally hundred’s of properties in South Africa over the last 4-years covering every classification of project type in every climate zone across the country. It’s a fascinating journey understanding the rocket science of how any property might respond to its specific location in relation to the architectural design, orientation…
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Incompetent Rational Design Energy Modelling
What happens if you submit an ‘incompetent’ Rational Design Energy Report…? By virtue of Regulation SANS 10400A A19 it is the obligation of the architectural professional to adequately provide sufficient information to satisfy the Building Control Officer that competency is being delivered and the requirements of the Building Regulations are being achieved. If the Building…