The h,x-diagram as representation of measurements of ranges of comfort in a long duration test.

A new visual method is yielded by a particular application of Mollier's h,x-diagram. Point fields (temperature and humidity) lead to a significant improvement upon previous graphic methods. Flats with mechanical balanced ventilation are drier and more influenced by the exterior climate than are with shaft ventilation system ventilated flats ("Berlin ventilation"). The evaluation of the graphic representation of the experimental results in the form of curves permits rapid assessment of the experimental results. When the experimental data is plotted in Mollier's h,x-diagram, the comparison with fields of comfort published in the literature becomes possible, The display of the experimental data in Mollier's h,x-diagram further allows both differences between individual flats and seasonal behavioural changes of the occupants to be displayed in a small number of diagrams.