A treatise on hospital and asylum construction; with special reference to pavilion wards . .This will admit of the same sized fans beingused for both heating and ventilating and runningthem at the same speed. Results of Test, by writer, of Ventilation in theMcLane Operating Room, Roosevelt Hospital, NewYork, March 13, 1S91. Seeplales 42, 43 ; Pages S~, Sg. Cubic space, about 9,100 feet. Inlets for warmed air (N) are fifteen in num-ber, each register measuring 3^ x 17, or a totalgross area of 960 square inches. Allowing a de-duction of 25 per cent, for the area (in this case) ofthe bars of the
A treatise on hospital and asylum construction; with special reference to pavilion wards . .This will admit of the same sized fans beingused for both heating and ventilating and runningthem at the same speed. Results of Test, by writer, of Ventilation in theMcLane Operating Room, Roosevelt Hospital, NewYork, March 13, 1S91. Seeplales 42, 43 ; Pages S~, Sg. Cubic space, about 9,100 feet. Inlets for warmed air (N) are fifteen in num-ber, each register measuring 3^ x 17, or a totalgross area of 960 square inches. Allowing a de-duction of 25 per cent, for the area (in this case) ofthe bars of the registers, we have a total net area of720 square inches, or exactly 5 square feet. Thecorrected test of the anemometer at each group ofregisters gave an average incoming velocity of 223feet per minute, or 1,115 cubic feet of fresh warmedair supplied to the room per minute, or 66,900 perhour. As a fan is used for mechanically deliveringa constant supply of \varm air by the plenum method,it is evident that the exit of air per hour throughthe ceiling ventilator must about equal the amount. I20 HOSPITAL AND ASYLUM COXSTRUCTIOX. supplied, although, owing to the height, no accuratereading of the ceiling was obtained. Tlie above issufficient, hc)\\e\-er, to show tliat excellent results areobtained in this operating room, and it nia}- be ofinterest to state, with reference to future remarks onmechauical ventilation, that the fan is stopped onlyten minutes each day for oiling. Results of Tests, hx wKurKR, of Ventilation in theChildrens Ward at Lakicsidic Hospital, Feb. 21, Plate II ; Page 23. The fresh warm air is admitted at 4 registers(B), placed in the floor to save expense in the con-struction which was kept at minimum. The vitiated air is removed by four fire-places(D), in the center of the \vard. The four ceiling registers (C), are not dependedupon to any extent, although fresh cold air may beadmitted through them in winter, and heated airemitted in summer, thus preventin
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