Document NenkDjGmEjx6KMk7Dx34754ay

American Society of Heating and Ventilating Engineers Guide, 1928 SYNTHETIC JUR CHART for DE TERM/N/N6 percentage or perfect ventilation \cTrrcMcRmo,lRP4CRUtTttc3CuLr.rSr\, BACTZR/A CCtON/CS Ti*V M/M. PEORDCOERNST ypEcrpOM 150.000 o/srp/Bi/- Yfica*7\ -%T/OM PZRCCNT I , ** \PPPUT\ 50 zo 22; /oaooo /oo rm ro 22; 50000 50 22; `80 ~32Z. so ~gg~ /oo LOCA T/ON_______________________________________ DATE. T3SL F/NAL PERCENTAGE-__________ EFFECT/VE TEMPERATURE____ PRIMARY SENSE IMPRESSION. NOTES _ TEST BY_____ PLOTTED BTCHECKEO BT-- Fig. 1. The Synthetic Air Chart percentage of test as a whole, it was thought desirable to omit them. The minus percentage columns in the old chart which appear at the right of each factor column, have been also omitted from the body of the chart and placed in duplicate on the right and left borders. This leaves the chart proper free from all figures, except those relating to the specific factor. The scales have also been reversed in the present chart so that penaliza tion for undesirable conditions as apply to the percentage of perfection for ventilation is directly proportional to the height of the shaded areas 272 Chapter XVII--The Hill Synthetic Air Chart Fig. 2. Method of Charting Test Results in each column, as the chart in this form visualizes much better the defects in the air conditions represented by the test. METHOD OF USING THE CHART In using the Synthetic Air Chart, the floor area of the room to be tested is divided into a certain number of equal areas and tests made at the center of each area. In the standard school classroom, for example, the room is divided into four equal areas by two imaginary lines from the center of contiguous side walls, crossing at right angles in the center. 273