Ventilation and Heating, Principles and Application: A Treatise |
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Ventilation and Heating, Principles and Application: A Treatise B F Co Sturtevant No preview available - 2016 |
Ventilation and Heating, Principles and Application; A Treatise B F Sturtevant Company No preview available - 2016 |
Common terms and phrases
air discharged air supply arrangement atmosphere basement beneath boiler brick BRITISH THERMAL UNITS building carbonic acid ceiling cent cold air condensation connection construction cubic feet cubic foot delivered designed desired difference distribution ducts and flues efficiency engine evident exhaust fan exhaust steam factors feet per minute floor galvanized iron given heated air heating and ventilating heating surface horizontal hot and cold hot blast humidity inches inlet installed introduced leakage live steam located loss matter MENOMINEE HIGH SCHOOL method mill mixing damper necessary occupants ordinary outlet overhead pipe pounds practically presented pressure proportion PULLEY FAN radiation registers sections secure shaft shown in Fig side space square foot steam fan steam trap steel plate Sturtevant System sufficient system of heating temperature theatre thermostat three-quarter housing tion usually vapor velocity VENTILATING APPARATUS ventilation and heating vertical flues volume of air walls
Popular passages
Page 43 - The older arrangement consists in heating the air by means of a primary coil at or near the fan, to about 60 degrees, or to the minimum temperature required within the building. From the coil it passes to the bases of the various flues, and is there still further heated as required, by secondary or supplementary heaters placed at the base of each flue.
Page 157 - But the distinction and separation between these different parts changes at different times during a performance. The simple rising of the curtain throws into one the two previously distinct apartments — the auditorium and the stage. So too, when all the doors or portieres are opened into the corridors, the distinction between the auditorium and corridors is materially lessened. It will be readily seen that arrangements based entirely upon the constant separation of these various apartments may...
Page 9 - ... presented as showing relatively the volumes recommended by him in different classes of buildings : CUBIC FEET PER HOUR. Hospitals, 3,600 per Bed Legislative Assembly Halls 3,600 per Seat Barracks, Bedrooms and Workshops, 3,000 per Person Schools and Churches 2,400 per Person Theatres and Ordinary Halls of Audience 2,000 per Seat Office Rooms, 1,800 per Person Dining Rooms, 1,800 per Person These figures are for buildings in which there is no special contamination of the atmosphere beyond that...
Page 27 - In defining the unit of heat it is necessary to specify the temperature of the water because the amount of heat necessary to raise the temperature of one pound of water through one degree varies slightly at different temperatures.
Page 7 - Ibs. of water are evaporated daily from the surface of the skin of a person in still life. If the air supply at 70° is assumed to have a humidity of 70 per cent. and to be saturated when it leaves the body at a higher temperature, then at least 4 cubic feet of air per minute will be required to carry away this vapor.
Page 167 - If the contents of the bottle remain clear, treat the bottle of 200 cubic centimeters in the same manner; a milky appearance or turbidity in this would indicate 12 parts in 10,000. In a similar manner, turbidity in the 250 cubic centimeter bottle indicates 10 parts in 10,000; in the 300, 8 parts; in the 350, 7 parts; and in the 400, less than 6 parts. The ability to conduct more accurate analyses can be attained only by special study and a knowledge of chemical properties and of methods of investigation.
Page 64 - The efficiency and economy of the system must of necessity be considered •jinder first cost and running expense. Circumstances so decidedly alter cases that an arrangement economical and easy of introduction in one building may prove very expensive in another. In most cases, however, the Sturtevant System, regarded simply as a method of heating, may be installed for less money than any other system of equal efficiency. Wherever the flues can be formed in the walls and the distributing ducts are...
Page 18 - These coefficients are to be increased respectively, as follows : Ten per cent. where the exposure is a northerly one and winds are to be counted on as important factors. Ten per cent. when the building is heated during the daytime only, and the location of the building is not an exposed one. Thirty per cent. when the building is heated during the daytime only, and the location of the building is exposed. Fifty per cent. when the building is heated during the winter months intermittently, with long...
Page 167 - The bottles should be filled with the air to be examined by means of a handball syringe. Add to the smallest bottle 15 cubic centimeters of the limewater, put in the cork, and shake well. If the limewater has a milky appearance, the amount of carbonic acid will be at least 16 parts in 10,000. If the contents of the bottle...
Page 6 - ... allowed, also limits the amounts of other impurities which are found in combination with it. When carbonic acid is present in excess of 10 parts in 10,000 parts of air, a feeling of weariness and stuffiness, generally accompanied by a headache, will be experienced; while with even 8 parts in 10,000 parts a room would be considered close.