Handbook for Heating and Ventilating Engineers |
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70 degrees ammonia applied atmosphere average boiler brine building calculated capacity carbon dioxide cast iron cent chamber coal coils condensation connected cooling cubic feet cubic foot cylinder damper diameter District Heating efficiency engine evaporator exhaust steam expansion tank feet of air feet of radiation feet per minute feet per second floor formula fresh air furnace gases heat loss heat register heater Heating and Ventilating heating surface heating system horse-power hot blast Hot Water Heating humidity installed latent heat liquid live steam mineral wool moisture plenum pounds gage pounds of steam pressure pump radiation refrigerant riser sections square feet square foot square inch stack Steam Heating steam systems supply t. u. per hour Table temperature thermostat tion total heat transmission tube vacuum valve velocity Vent wall warm air Water Heating weight zero day
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Page 16 - ... cover 15.2 Two layers asbestos paper, I in. hair felt, canvas cover, wrapped with manilla paper 15. Two layers asbestos paper, I in. hair felt 17. Hair felt sectional covering, asbestos lined 18.6 One thickness asbestos board...
Page 9 - Thermometer Scale at which the mercury stands. Then swing the index hand to the right, until the sliding pointer intersects the curved line which extends downward to the left from the degree of the Dry Bulb Thermometer Scale at which the mercury stands.
Page 16 - University,° Relative amount Kind of covering of heat transmitted Naked pipe 100. Two layers asbestos paper, 1 in. hair felt, and canvas cover 15.2 Two. layers asbestos paper, 1 in. hair felt, canvas cover wrapped with manilla paper 15. Two layers asbestos paper, 1 in. hair felt 17. Hair felt sectional covering, asbestos lined...
Page 16 - V = striking velocity in feet per second, g = acceleration of gravity in feet per second...
Page 4 - Engineers (1910) we read that carbon dioxid "is constantly being diffused throughout the air of the room, thus rendering it unfit for use. If this carbonic-acid gas could be disassociated from the rest of the air and expelled from the room without taking large quantities of otherwise pure air with it, the problem of the heating engineer would be simplified, but this can not be done.
Page 41 - ... basis of a certain degree of ventilation. In obtaining the grate area, it is necessary to assume the quality of the coal, the efficiency of the furnace and the pounds of coal burned per hour per square foot of grate.
Page 16 - Asbestos molded, mixed with plaster paris 31.8 Asbestos felted, pure long fibre , 20.1 Asbestos and sponge 18.8 Asbestos and wool felt 20.8 Magnesia, molded, applied in plastic condition 22.4 Magnesia, sectional 18.8 Mineral wool, sectional 19.3 Rock wool, fibrous 20.3 Rock wool, felted 20.9 Fossil meal, molded, J4 inch thick 29.7 In general the thickness of the coverings tested was one inch.