. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. ach cu. ft. of gas; therefore,the vohmie of the air-gas mixture to contain 1000 will be 11 , and the heat content of the mixture will be 91 per cu. ft. Thepractical result is that we can take a boiler or furnace designed for nat- Application of Gas to Space Heating, T. King 323 ural gas at 1000 and get the same rating out of it with blue watergas at 300 , provided the proper burners are furnished and cor-rectly adjusted. The figures above are approximate and stated in ro
. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. ach cu. ft. of gas; therefore,the vohmie of the air-gas mixture to contain 1000 will be 11 , and the heat content of the mixture will be 91 per cu. ft. Thepractical result is that we can take a boiler or furnace designed for nat- Application of Gas to Space Heating, T. King 323 ural gas at 1000 and get the same rating out of it with blue watergas at 300 , provided the proper burners are furnished and cor-rectly adjusted. The figures above are approximate and stated in roundnumbers. It is important to remember that the combustible gases that we dealwith in heating, are made up of hydrogen and carbon, or combinationsof these two elements, and that when these two elements are completelyburned, they form carbon dioxide and water vapor, all the hydrogencombining with oxygen to form water vapor and all the carbon combiningwith oxygen to form carbon dioxide. Both of these products are inthemselves perfectly harmless, but either may be objectionable if held in. FIG. 3. AN ARRANGEMENT OF TWO VENTED GAS RADI-ATORS, REPLACING A MANTLE STOVE AND EXHAUSTINGINTO THE CHIMNEY a room in excess—the water vapor because it tends to condense on windowpanes, walls and other cold surfaces, frosting the panes and moisteningthe walls, and the dioxide because if it accumulates in excess, it willreduce the oxygen content of the room below the proper healthful limit. Gas when used for heating, may be burned in two ways. In the olderof these, a jet of gas issues from a narrow slot in a tip made of somerefractory material and the flame spreads out in a thin sheet, expandinguntil it obtains enough contact with the air to secure the amount of oxygennecessary to burn the gas. This means a large low-temperature luminousflame that will deposit carbon if brought in contact with a cold therefore cannot be used in a confined space or under a boiler. In 1855, Bunsen de
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