A popular treatise on the warming & ventilation of buildings : showing the advantage of the improved system of heated water circulation / by Charles James Richardson.

  • Richardson, Charles James.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: A popular treatise on the warming & ventilation of buildings : showing the advantage of the improved system of heated water circulation / by Charles James Richardson. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    IG warm-water system), which an experience now of upwards of twenty-five years has proved can be inti’oduced with the best effect, both into our public and private architecture. Therefore, a de- tailed' description of the different apparatus required by other systems will not be attempted; but the principle, and more especially the practical intro- duction of the several systems in buildings, .will be • slightly examined. It may previously be necessary to observe, that the atmospheric air, under all these various con- trivances, is made the vehicle for supplying warmth ; and the manner of suffusing or saturating this im- portant fluid, with the heat required to effect its purpose with safety and facility, is the first object for investigation. We find the atmospheric air to be principally composed of two elementary substances, forming a thin, elastic, and perfectly invisible fluid. In chymical analysis it is a mixture of nitrogen and oxygen gases, in fixed and uniform proportions, with a small adventitious mixture of carbonic acid gas, and a variable quantity of aqueous vapour generally held in solution. The oxygen, or vital principle, constitutes a little more than one-fifth of the whole mass, and is the most essential part. The air which is breathed once only, is rendered unfit for future respiration at the time, and it is supposed that a man requires