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1954-55 Theatre Catalog, 12th Edition, Page 368 (330)

1954-55 Theatre Catalog, 12th Edition
1954-55 Theatre Catalog
1954-55 Theatre Catalog, 12th Edition, Page 368
Page 368

1954-55 Theatre Catalog, 12th Edition, Page 368

HEATING and cooling are related since one system is usually called upon to perloxm both of these iuncuons. An all-yeaharound cu conditioning system is seen (above). The attractive washroom (below) is heated with convectoxs placed beneath the windows to meet the cold air as soon as it enters room.

leaks and cracks, making it unnecessary to periodically raise and lower windows.

A minimum of 20 complete changes of air per hour is required for theatre washrooms. Thirty changes is even better. Generally speaking, when the air inside a theatre is moist, cold air from the outside should be preheated before being introduced, to avoid problems associated with condensation.

As far as circulation of air within the theatre auditorium proper is concerned, the objective is the maintenance of uniform conditions in the breathing zone.

Uniform Conditions

A number of difficulties present hurdles in the achievement of this objective. One of these is the tendency to overcool the front of the orchestra floor. Another is the possibility of inadequate cooling in the rear of the balcony, and in the space beneath it. Proper design of the air supply system usually can be counted upon to solve these difficulties satisfactorily.

The return air system should not be depended upon for aid in maintaining uniform temperature within a theatre auditorium. A satisfactory condition results only when the air supplied by the heating-cooling system is introduced at the correct temperature and with the proper moisture content.

Principal Function

The principal function of return air is in reduction of the overall heatingcooling load. When air from the auditorium is recirculated after being washed and filtered, it decreases the amount of outside air which must be taken in and heated or cooled to replenish the supply.

1954-55 Theatre Catalog, 12th Edition, Page 368