Wall or roof panel has air permeable layer defining laminar exit flow and ducts for heating or cooling fluid

摘要

The wall or roof panel has an air permeable exterior layer (1) with a free flow area of at least twenty five percent and with return airflow providing a laminar stream The inner face of the panel has a tube grid (2) for a heating or cooling fluid. The air permeable layer can be as a honeycomb or mesh made of metal.