Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances . of ceilingsin feet 12 by 15 10 by 14 9 by 12 8 by 12 12 10 9 9 18 by 2015 by 1514 by 1513 by 13 11 10 9 9 Second Floor 10 by 14 10 18 by 20 10 9 by 12 9 16 by 16 9 8 by 12 8 13 by 13 8 8 by 10 7 12 by 12 8 The furnace is not only a means of heating the hosne but may be a means of ventilation aswell; to this end it is desir-able to arrange the air supplyof the furnace to connect withthe outside air. This arrange-ment assures a supply ofoxygen even though no specialmeans is arranged
Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances . of ceilingsin feet 12 by 15 10 by 14 9 by 12 8 by 12 12 10 9 9 18 by 2015 by 1514 by 1513 by 13 11 10 9 9 Second Floor 10 by 14 10 18 by 20 10 9 by 12 9 16 by 16 9 8 by 12 8 13 by 13 8 8 by 10 7 12 by 12 8 The furnace is not only a means of heating the hosne but may be a means of ventilation aswell; to this end it is desir-able to arrange the air supplyof the furnace to connect withthe outside air. This arrange-ment assures a supply ofoxygen even though no specialmeans is arranged for dis-charging the vitiated air fromthe rooms. Combination Hot-air andHot-water Heater.—In thecase of large houses heatedby hot air it is sometimesbetter to use two or morefurnaces than to attempt tocarry the heat long dis-tances in the customarypipes. Where heat is re-quired in rooms located at adistance more than 30 feet, it is advisable to use a combinationhot-air and hot-water heater, the distant rooms being heatedby hot-water radiators. A furnace arranged for such a combination is shown in Fig. Fig 47.—Interior construction of a com-bination hot-water and hot-air furnace. THE HOT-AIR FURNACE 57 This furnace contains, first, the essential features of a hot-airfurnace; next, it includes a hot-water plant. The fire-box andair-heating surfaces are easily recognized. The arrows show thecourse of the air entering at the bottom of the furnace, whichafter being heated by passing over the heating surfaces, escapesat the openings marked warm air, to the distributing pipes. Inside the air-heating surfaces are three hollow cast-iron piecesTF, that form a part of the walls of the fire-box. These pieces,with their connecting pipes, form the water-heating part of the
Size: 1357px × 1842px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkmcgrawhillb
