No fault cathedral ceilings.

           

New ASHRAE ventilation standard outline.

         

Roof insulation

       

Ventilation requirements in modern buildings.

Besides the hygienic aspect, also the aspect of energy saving of heating residential buildings is very important. This is only possible by mechanical ventilation with heat recovery. This paper describes a part of the large variety of systems, which are nowadays available on themarket. The main difference of these systems are: * single room unit/decentral unit and * central unit for one dwelling or a single family building.

Ventilation criteria, effectiveness, measurement.

           

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