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. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. the occupied rooms. While a system of indirect steam is more expensive to installthan a hot-air furnace the cost of operation is practically thesame for an equal amount of ventilation. A considerable savingin fuel is often made by using direct radiation in certain unim-portant rooms, where heat only is required, but this is usuallyoffset by the more generous ventilation provided in other partsof the building. 106 INDIRECT STEAM HEATING 107 Types of Radiating Surface. Cast-iron Rad Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/power-heating-and-ventilation-a-treatise-for-designing-and-constructing-engineers-architects-and-students-the-occupied-rooms-while-a-system-of-indirect-steam-is-more-expensive-to-installthan-a-hot-air-furnace-the-cost-of-operation-is-practically-thesame-for-an-equal-amount-of-ventilation-a-considerable-savingin-fuel-is-often-made-by-using-direct-radiation-in-certain-unim-portant-rooms-where-heat-only-is-required-but-this-is-usuallyoffset-by-the-more-generous-ventilation-provided-in-other-partsof-the-building-106-indirect-steam-heating-107-types-of-radiating-surface-cast-iron-rad-image370319300.htmlRM2CEDE18–. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. the occupied rooms. While a system of indirect steam is more expensive to installthan a hot-air furnace the cost of operation is practically thesame for an equal amount of ventilation. A considerable savingin fuel is often made by using direct radiation in certain unim-portant rooms, where heat only is required, but this is usuallyoffset by the more generous ventilation provided in other partsof the building. 106 INDIRECT STEAM HEATING 107 Types of Radiating Surface. Cast-iron Rad
. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students . re placed beneath the registers or flues and mixingdampers provided for regulating the temperature. If there arelarge windows, flues should be arranged to open in the windowsills, so that a sheet of warm air may be delivered in front of thewindows to counteract the efifects of cold down draughts from 286 HEATING AND VENTILATING PLANTS the exposed glass surface above. These flues may usually bemade 3 or 4 inches in depth and should extend the full width ofthe window. Small rooms, Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/power-heating-and-ventilation-a-treatise-for-designing-and-constructing-engineers-architects-and-students-re-placed-beneath-the-registers-or-flues-and-mixingdampers-provided-for-regulating-the-temperature-if-there-arelarge-windows-flues-should-be-arranged-to-open-in-the-windowsills-so-that-a-sheet-of-warm-air-may-be-delivered-in-front-of-thewindows-to-counteract-the-efifects-of-cold-down-draughts-from-286-heating-and-ventilating-plants-the-exposed-glass-surface-above-these-flues-may-usually-bemade-3-or-4-inches-in-depth-and-should-extend-the-full-width-ofthe-window-small-rooms-image370024922.htmlRM2CE02FP–. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students . re placed beneath the registers or flues and mixingdampers provided for regulating the temperature. If there arelarge windows, flues should be arranged to open in the windowsills, so that a sheet of warm air may be delivered in front of thewindows to counteract the efifects of cold down draughts from 286 HEATING AND VENTILATING PLANTS the exposed glass surface above. These flues may usually bemade 3 or 4 inches in depth and should extend the full width ofthe window. Small rooms,
. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. Fig. 47. Overhead Circulation Coils.. Fig. 48. Hangeis for Overhead Coils. in the radiator and the surrounding air, the velocity of the airover the radiator, and the character of the surface, whetherrough or smooth. In the case of ordinary direct-steam heatingthese conditions are very nearly constant and experience hasshown the average cast-iron radiator of open pattern to have anefficiency of about MO B. T. U. per square foot of surface per DIRECT STEAM HEATING 85 hour. This is b Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/power-heating-and-ventilation-a-treatise-for-designing-and-constructing-engineers-architects-and-students-fig-47-overhead-circulation-coils-fig-48-hangeis-for-overhead-coils-in-the-radiator-and-the-surrounding-air-the-velocity-of-the-airover-the-radiator-and-the-character-of-the-surface-whetherrough-or-smooth-in-the-case-of-ordinary-direct-steam-heatingthese-conditions-are-very-nearly-constant-and-experience-hasshown-the-average-cast-iron-radiator-of-open-pattern-to-have-anefficiency-of-about-mo-b-t-u-per-square-foot-of-surface-per-direct-steam-heating-85-hour-this-is-b-image370362887.htmlRM2CEFDHY–. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. Fig. 47. Overhead Circulation Coils.. Fig. 48. Hangeis for Overhead Coils. in the radiator and the surrounding air, the velocity of the airover the radiator, and the character of the surface, whetherrough or smooth. In the case of ordinary direct-steam heatingthese conditions are very nearly constant and experience hasshown the average cast-iron radiator of open pattern to have anefficiency of about MO B. T. U. per square foot of surface per DIRECT STEAM HEATING 85 hour. This is b
. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. 4 sq. inches INDIRECT STEAM HEATING 121 Cottage Hospitals Vent flue area per square foot of indirect Story radiating surface 1st 2 sq.inches 2nd 3 sq.inches 3rd 4 sq.inches Velocity of Air in Flues. In order to secure a flow of air through a vent flue there mustbe an acting force to produce it.. Fig. 82. Aspirating Coil for Small Flue. In gravity heating this is due to the higher temperature withinthe flue, as already described for the warm-air pipes. This temperature difference, Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/power-heating-and-ventilation-a-treatise-for-designing-and-constructing-engineers-architects-and-students-4-sq-inches-indirect-steam-heating-121-cottage-hospitals-vent-flue-area-per-square-foot-of-indirect-story-radiating-surface-1st-2-sqinches-2nd-3-sqinches-3rd-4-sqinches-velocity-of-air-in-flues-in-order-to-secure-a-flow-of-air-through-a-vent-flue-there-mustbe-an-acting-force-to-produce-it-fig-82-aspirating-coil-for-small-flue-in-gravity-heating-this-is-due-to-the-higher-temperature-withinthe-flue-as-already-described-for-the-warm-air-pipes-this-temperature-difference-image370752001.htmlRM2CF55XW–. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. 4 sq. inches INDIRECT STEAM HEATING 121 Cottage Hospitals Vent flue area per square foot of indirect Story radiating surface 1st 2 sq.inches 2nd 3 sq.inches 3rd 4 sq.inches Velocity of Air in Flues. In order to secure a flow of air through a vent flue there mustbe an acting force to produce it.. Fig. 82. Aspirating Coil for Small Flue. In gravity heating this is due to the higher temperature withinthe flue, as already described for the warm-air pipes. This temperature difference,
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