. The principles of ventilation and heating and their practical application. ^ feet indiameter. The floorsurface occupied byspectators is 14,608square feet, the ca-pacity of the hall is Figure 32. 388,482 Cubic feet, and the combined area of the fresh-air inlets into this hall is 807 square feet. In addition to these ample provisions for the supply and removal ofair. Dr. Bohm has also provided, in this building, means for the controland regulation of the whole apparatus from one central office, whichforms, as it were, the brain to the machine. By means of electricity thetemperature in differen


. The principles of ventilation and heating and their practical application. ^ feet indiameter. The floorsurface occupied byspectators is 14,608square feet, the ca-pacity of the hall is Figure 32. 388,482 Cubic feet, and the combined area of the fresh-air inlets into this hall is 807 square feet. In addition to these ample provisions for the supply and removal ofair. Dr. Bohm has also provided, in this building, means for the controland regulation of the whole apparatus from one central office, whichforms, as it were, the brain to the machine. By means of electricity thetemperature in different parts of the house can be observed in this officeof control, and here also are levers which control the valves which regu-late the air supply, both hot and cold. During an operatic performance, the superintendent of heating andventilation is on duty in this office, and sees that all parts of the house. VENTILATION AND HEATING. I33 receive their due supply of fresh air and are kept at a proper tempera-ture. The result has been extremely satisfactory, and I am assured that theexpense incurred by these elaborate arrangements has been much morethan repaid by increased attendance on the part of those who would notgo to an ordinary theatre because of the discomfort produced by over-heating and foul air. In connection with the heating and ventilating arrangements of theVienna Opera House should be mentioned those of the new OperaHouse in Frankfort-on-the-Main, which are arranged upon essentiallythe same system, although it is claimed with improvement as to details,more especially as regards the supply of air to the galleries. Theapparatus in this building is designed to supply warmed and moistenedair sufficient for two thousand persons. The warming is effected bysteam, the boilers for this purpose being in the cellar of a buildingplaced on the opposite side of the street and connected with


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Keywords: ., bookcentury1800, bookdecade1880, booksubj, booksubjectventilation