Category Archives: ZNE

Buildings Don’t Need to Breathe Only People Do!

Campus OneWarsaw 14 February, 2013

Commercial buildings which do not achieve Air Tightness often waste 20% to 40% of the total energy that they consume. When the building envelope is not tight energy is simply lost to the outside. Defective roof lights, smoke hatches and curtain walls, a result of poor design, defective construction, or incomplete maintenance is widespread. “We waste so much energy for no good reason” says SOLIDEA’s Steve Walker  “Air Tightness is the big ticket cost in retail, commercial offices and hotels, and it has nothing to do with the level of Insulation installed”

What is Air-Tightness?

The level of Air Tightness in a building is measured as Air Permeability it is the measurement of the volume of air which leaks through the building envelope per hour per m² of building envelope at 50 Pascals Differential Pressure. Air Permeability is then expressed as a rate for example 3 m³/h. m² at 50 PA which is much better than 7 m³/h. m² at 50 PA. We can test Air Tightness on site and we can easily quantify the energy losses simply by measuring Air Permeability Continue reading

Autumn’s Energy Windfalls

Warsaw, Poland 31 October 2012

Every year thousands of tons of leaves need to be swept up and disposed of by district and local park authorities. It’s a costly but necessary business because leaves block drains, paths and roads. Unswept leaves spoil parks, and avenues. But the gasification of leaves reduces public costs and can create much employment. As a source of renewable energy feedstock Autumns Windfalls for the community is truly value added commodity Continue reading

Green Coffee Grinds Feedstock

Gothenburg September 29, 2012

There is not an industry more focussed on being green than the Coffeehouse business right now. On the high street its all about green credibility. There is much debate about in store waste and renewable coffee cups, not to mention what to do with the spent beans or “grinds” as they are called in the trade. When the SOLIDEA Group EVE® team were asked to look at how renewable energy might best impact the Coffee business we came up with a few surprises.

The SOLIDEA EVE® [Energy Value Engineering] team review business premises and industry segments to introduce renewable energy solutions to save energy, save money and add value. SOLIDEA’s clients want to be the World’s first Zero Net Energy Coffee House Operators. Continue reading