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Content archived on 2022-12-27

A BULDING INCORPORATING THE DOUBLE ENVELOPE DESIGN AND SUNSPACE AIR HEATING

Objective

The aim of this project is to demonstrate that in a highly insulated building incorporating the double envelope design and relying upon a closed sunspace as the only source of heat, no auxiliary heat source is required.

The sunspace situated on the south side of the building comprises 33 m2 of window facing directly south and 34 m2 of window half facing south east, the remainder south west.
The building, which houses first aid services (ambulances and fire engines) was built as a double envelope design. The insulated south wall is behind the above mentioned sunspace.
Below the well insulated roof a false ceiling is attached to the rafters; the north cavity wall is insulated on the exterior side. The ground floor also contains a cavity in order to allow air passing from the roof through the rear wall cavities to recycle back to the roof via the sunspace.
An aluminium vapour barrier is used. The building's fabric, built out of every-day masonary materials, acts as the thermal storage giving up heat to the interior of the building.
In Winter, air is heated in the sunspace and in passing through the cavities on the other 3 surfaces of the building, its heat is transferred to the building fabric. A ventilator is used to ensure satisfactory circulation.
In Summer the sunspace is protected from direct sunlight by balconies and the overhanging roof . In addition night ventilation can be encouraged and moreover air can be blown through cement tubes, buried beneath the building at a depth of 2 m, before being ducted into the building itself. In this way the ventilation air undergoes some degree of pre-cooling.

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Topic(s)

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Funding Scheme

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DEM - Demonstration contracts

Coordinator

S.E.M.I.S.
EU contribution
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Address
B.P. 19
13460 STES MARIES DE LA MER
France

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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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