. The principles of ventilation and heating and their practical application. es theventilating arrangements as follows : For the ventilation of the theatre a fan is provided, four feet sixinches in diameter, worked by a direct-acting steam engine. It drawsits supply down a series of air shafts, formed in the main eastern wall,and forces it into an air chamber formed under the floor of the this chamber shafts are carried up in the walls to diffuse the freshair at different levels around the whole space. In addition to theseshafts, branch distributing channels are provided for a sup
. The principles of ventilation and heating and their practical application. es theventilating arrangements as follows : For the ventilation of the theatre a fan is provided, four feet sixinches in diameter, worked by a direct-acting steam engine. It drawsits supply down a series of air shafts, formed in the main eastern wall,and forces it into an air chamber formed under the floor of the this chamber shafts are carried up in the walls to diffuse the freshair at different levels around the whole space. In addition to theseshafts, branch distributing channels are provided for a supply of air forthe stalls and the pit. Hot-water pipes arranged in coils are fixed in 146 VENTILATION AND HEATING. the chambers, in order that the air suppHed may be warmed when foundnecessary before its distribution. A water spray is also fixed in themain cold-air supply for cleansing the air. For the extraction of the vitiated air from the body of the theatre, acentre perforation, about five feet, is provided ; this is in direct com- JERMYivr STRETT THE CRlTERlO?l.§i []. Figure 42. munication with a powerful extraction shaft, four feet by three feet,running up the entire height of the building. In order to increase thepower of this shaft, the waste heat from the grill stove and the productsof combustion from the sun-burner that lights the theatre, are carried VENTILATION AND HEATING. 147 up the centre in independent wrought-iron pipes. At the gallery leveland also at the back of the stage four other extraction shafts are pro-vided. It is found, when this apparatus is in full working, that the
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Keywords: ., bookcentury1800, bookdecade1880, booksubj, booksubjectventilation
