. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. h the Peterson-Palmquist gas-analysis machine. This instrument is accurately calibratedand all CO, analyses were corrected before the final computations weremade. As the air in the room containing a high CO, content becomesdiluted by outdoor air of low CO, content, the average CO2 content inthe room will decrease from hour to hour, and the rate of decrease is afunction of the rate of dilution by the outdoor air. Experiments show that the CO, liberated, dififuses rapidly throughoutthe room and its distri
. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. h the Peterson-Palmquist gas-analysis machine. This instrument is accurately calibratedand all CO, analyses were corrected before the final computations weremade. As the air in the room containing a high CO, content becomesdiluted by outdoor air of low CO, content, the average CO2 content inthe room will decrease from hour to hour, and the rate of decrease is afunction of the rate of dilution by the outdoor air. Experiments show that the CO, liberated, dififuses rapidly throughoutthe room and its distribution has proved entirely satisfactory. Also, sincethe rate of diffusion of CO, in air is slow compared with the velocity ofair entering through the cracks around the windows, no loss of the gasnot representing air change is probable at this point. So long as thevelocity of air through the crevices is greater than the rate of diffusionof the gas, a flow of CO, against the direction of flow of incoming airis impossible. The wind velocities are determined by taking five hourly anemometer. FIG. 1. PETERSON-PALMQUISTGAS ANALYSIS MACHINEPREPARED FOR CALIBRATION Infiltration of Air in Buildings, O. W. Armspach 123 readings outdoors, each reading extending over a period of ten readings are converted from feet per minute to miles per hour. Theyare taken at a point opposite the room to be tested and at a sufficientdistance to avoid any counter air currents caused by the wind striking thewall of the building. All anemometer readings were corrected by } SolufI on of Na CI displacesair from sample boWeinfo CO2 machine A- Bureik B-KOH PfpsH-e C~ Compensating Bulb D-Mercurif Level Bulb E-Capillarij Tube F- Compression Screir 6-SafurvfedSolution ofNaCI H-120 cc Air Sample Bofffe M-Manomehr
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