. Hardware merchandising January-June 1900. ofChemical Industry, who stated that he hadfound by experiment that the products ofcombustion from a gas fire burning 30 cubicfeet of gas per hour could be removed by astove pipe from two to three inches in dia-meter, according to the length of the pipe,and the bends necessary. It is, therefore,evident that the ordinary 10 in. chimney ofthe open fire is from 10 to 20 times toolarge, so that the velocity of the up currentof «gas in such a chimney is from 10 to 20tim/s«*lower than it need be.^*.©ne> of the first results of reducing ^diameter of the
. Hardware merchandising January-June 1900. ofChemical Industry, who stated that he hadfound by experiment that the products ofcombustion from a gas fire burning 30 cubicfeet of gas per hour could be removed by astove pipe from two to three inches in dia-meter, according to the length of the pipe,and the bends necessary. It is, therefore,evident that the ordinary 10 in. chimney ofthe open fire is from 10 to 20 times toolarge, so that the velocity of the up currentof «gas in such a chimney is from 10 to 20tim/s«*lower than it need be.^*.©ne> of the first results of reducing ^diameter of the chimney, and thereby in-creasing the velocity of the flue gases by 10to 20 times, is to abolish all risk of downblow—no small advantage when gas is tobe burned in bedrooms. But when the fluepipe and chimney are so far reduced it willbe found that the temperature of the pro-ducts of combustion, as they are dismissedfrom the fire, is far in excess of what is CANADIAN HARDWARE AND METAL 27 HOW TO SAVE CAS Peebles Automatic Gas Go vernors.
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