A new method of calculating air flow in buildings. Neues Verfahren zur Berechnung der Lufstromung in Gebauden.

A supplement to an earlier aricle. Notes that the trend to airtight windows has altered the order of importance of the factors which influence air flow in buildings. Treats the calculation of the air flow in a building and the constituent factors - pressure loss, differential pressures with air supply, thermal buoyancy, wind, fans. Sets out the calculation procedure and applies it to two worked examples. Illustrates the effect on a building of the pressure drop, thermal buoyancy etc. in diagrams.