A treatise on hospital and asylum construction; with special reference to pavilion wards . gh steamcoils were placed in the ventilators to aid the exitof foul air. If we accept this percentage (jS) as the averageeffective respiratory energy of a ward, it will be seenthat the amount utilized is not much more than threequarters of the amount received, and therefore toconservatively produce a net result of 3,000 cubicfeet we must admit 4,000 cubic feet for each patientper hour. While conditions may vary, it would seem thatit is safe to allow for this percentage of loss. Untilthe ward is built and
A treatise on hospital and asylum construction; with special reference to pavilion wards . gh steamcoils were placed in the ventilators to aid the exitof foul air. If we accept this percentage (jS) as the averageeffective respiratory energy of a ward, it will be seenthat the amount utilized is not much more than threequarters of the amount received, and therefore toconservatively produce a net result of 3,000 cubicfeet we must admit 4,000 cubic feet for each patientper hour. While conditions may vary, it would seem thatit is safe to allow for this percentage of loss. Untilthe ward is built and the Hospital is in operation,local conditions governing the effective respiratoryenergy must be largely a matter of conjecture : soit is imperative to provide for a considerable excessof power in the heating and ventilating plant, inorder that the demands caused by our variable cli-mate may at all times be supplied. It should be remembered that the additional airadmitted is to make up the amount lost which is notbreathed^ so that the percentage of carbonic anhy-dride is not , AND CONSTKrCTION. f . If the writers deductions are adopted as a pre-liminary calculation the following- table may beused. 0 fc g. U 0 E n^ P. P :^ -r. S tionarts0000 = S C 3 o ** ^ ^ cc , b 0 5 o ross cubicir supplieour for eaent. Estimal amount 0 waste ret cubicir supplieour to eaent. Dilution biration (P;alunie in 1 A-erage Po1 fresh airy volume i otal Polliarts by \I ). C a X Z ?r, r. ^ -Z ^ ^ > < .- .r: H Ct .= 4000 1000 3000 2. 4 6 3600 900 2700 4 3333 S33 2500 4 2933 733 2200 4 2666 666 2000 3- 4 7 2400 600 1800 3-33 4 7-33 2000 500 1500 4- 4 8 1866 466 1400 4 1600 400 1200 5- 4 9 1466 366 1100 545 4 9-45 U33 333 1000 6. 4 10 It should be borne in mind that in our examplewe are working on a basis of 1800 cubic feetof air space, and that if more is allotted the patientit will not be changed so often, and zlce Icrsa ; al-t
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