A Practical Treatise On Warming Buildings By Hot Water Steam Hot Air On Vent
A Practical Treatise On Warming Buildings By Hot Water Steam Hot Air On Vent
Charles Hood
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) More than twenty years before Mr. Tobin revived this invention of Mr. Whitehurst, a much more judicious plan for bringing in warmed air through upright ducts or channels above the heads of the occupants of a room, had been successfully employed. In one of the courts of the Old Bailey Sessions House in London, the ventilation was obtained by setting the panelling of the court about six inches off from the wall for about seven or eight feet in height. Through this large channel, extending almos...t round the court, a large volume of air was forced into the court, and having an upward motion given to it, by the position of the channel, no inconvenient draught was experienced. (368*. ) This plan of ventilating, though pos- sessing much to recommend it, is not absolutely perfect. It requires, in addition, that a further supply of air be brought in at a lower level. When this is not done the air nearer the floor is not in so fresh a state as it ought to be; and it requires, therefore, for perfect ventilation, that a portion of air should enter near the floor as well as at the higher level already described.
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