Healthy hospitals : observations on some points connected with hospital construction / by Sir Douglas Galton ; with illustration.

  • Galton, Douglas Strutt, 1822-1899.
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Healthy hospitals : observations on some points connected with hospital construction / by Sir Douglas Galton ; with illustration. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    CHAPTER IX. WARMING {continued). 11. Warming by hot air conveyed along flues from a central source of heat. Warmed by {a) A furnace or iron cockle. {b) Hot water or steam pipes. There are some preliminary considerations which it will be desirable to notice. (i) Preliminary tempering of the air. When a volume of air has to be heated at a central source, advantage may be taken of the earth's temperature in very cold weather for tempering the air. At a very little depth below the surface of the earth, in all countries, the earth is of the average temperature of the climate, as may be ascertained by the temperature of springs. It will hence appear, that if the air which is requisite to supply a house in the winter of cold countries, were made to pass along a subterraneous cavity, it would become consider- ably warmed. It has been found by experiment, that a passage of two hundred feet in length in England has had the effect of warming the air of the atmosphere passing through it, to much above the arithmetical mean between the outer air and that of the earth. In summer the hot air could be cooled by this means. In using such air-flues the air should be drawn from a height of at least eight to ten feet above ground level; and the impure air from the surrounding ground must be excluded. This could be