Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . located the Exhaust Blower. EXPERIMENTAL LABORATORY OF NEW YORK STATE COMMISSION 167 thus about 6 feet from the floor. The recorder was placed in theApparatus Room, where it could be watched by the engineer incharge of the plant. (See Fig. 8.) The manipulation of theplant was simplified enormously by this change. Heretofore, read-ings were taken at the window each half hour. If the tempera-ture started to change immediately after a reading it was not dis-covered until the next reading. With the recording
Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . located the Exhaust Blower. EXPERIMENTAL LABORATORY OF NEW YORK STATE COMMISSION 167 thus about 6 feet from the floor. The recorder was placed in theApparatus Room, where it could be watched by the engineer incharge of the plant. (See Fig. 8.) The manipulation of theplant was simplified enormously by this change. Heretofore, read-ings were taken at the window each half hour. If the tempera-ture started to change immediately after a reading it was not dis-covered until the next reading. With the recording chart everylittle change was apparent at once and proper steps could be takento counteract the change before it had progressed far. The chartfurthermore showed the temperature at the center of the room amuch more representative point than at the Observation Roomwindow. From this date on, therefore, a continuous record ofwet and dry bulb temperatures was available. The necessity for air impingement on the wet bulb is indicatedby Fig. 9. Numerous check readings with a sling psychrometer. Air Circulation past Tliermometei- Bulbs was stopped from 1 45 to ^ 15 P Wet Bulb Temperature S degrees as a result. The rise would probablrhave been only half this amouut if the wet bulb had been freely exposed to the airof the room. 168 EXPERIMENTAL LABORATORY OF NEW YORK STATE COMMISSION have shown the recording psychrometer to be very accurate andreliable. AIR MEASUREMENT The amount of air forced into the Observation Room was deter-mined by an air meter specially designed for the Commission byWallace and Tiernan of New York City. (See Fig. 10.) Essen-
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Keywords: ., bookcentury1800, bookdecade1890, bookidtransactions, bookyear1895
