31 Aug '14, 12am

A Passivhaus trial in a very hot climate is underway in Qatar.

A family will live in the conventional villa too, for a comparative study on the efficiency of the Passivhaus - named “Baytna” (meaning ‘Our House’ in Arabic). The conventional villa is built to a one-star Global Sustainability Assessment System (GSAS) standard whereas the Passivhaus villa will consume 50% less energy and water, resulting in a halving of carbon footprint. Super insulation and thermal mass allow a Passivhaus to decouple the internal environment from the harsh external conditions. The energy efficiency measures also include high performance glazing, mechanical ventilation with heat/cold recovery, low energy lighting, low air leakage rates, high efficiency air-conditioning, and solar energy tapped through photovoltaic monocrystalline silicon panels on the roof. Each of the two single-storey villas will host the same number of people - a father, mother and two...

Full article: http://www.greenbuildingpress.co.uk/article.php?article_i...

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