Compressed air . ball type, regulating the speed,according to the demand for gas, up to the COMPRESSED AIR. 4109 maxinnim speed of 130 revolutions; but shoulda gas main break the engine could not race, asthe governor would shut it down wlien thismaximum speed was exceeded. Ihe go\ernorpulley has a safety-stop attachment by whichthe machine would be stopped in case thegovernor belt should break. No figures of\alue as to the cost of pumping are available,as the conditions are not favorable to econom-ical working. There are four separate sta- curve ranging from -jlA HP. at 10 lbs. press-ure to 13
Compressed air . ball type, regulating the speed,according to the demand for gas, up to the COMPRESSED AIR. 4109 maxinnim speed of 130 revolutions; but shoulda gas main break the engine could not race, asthe governor would shut it down wlien thismaximum speed was exceeded. Ihe go\ernorpulley has a safety-stop attachment by whichthe machine would be stopped in case thegovernor belt should break. No figures of\alue as to the cost of pumping are available,as the conditions are not favorable to econom-ical working. There are four separate sta- curve ranging from -jlA HP. at 10 lbs. press-ure to 13 HP. at 2Z lbs., i8;/> HP. at 2,2y2 lbs.,and 23/3 HP. at 42 lbs. Tests of tiie flow ofgas on the line from Aurora tcj Elgin. c(|uiv-alent to 2i/> miles of 4-in. pipe, and tests ofthe flow of gas through ft. of i-in. steelpipe, are given below. In tlie former case allconsumers were shut off the line as far as , at which point the pressure was taken,the pressure at Elgin (as shown i)y the rise. SK1:T( li MAI DISIKIIH TloN <il T11K WKSllCkN INriKD .\ .\ I) fC). tions, and the compressors are not economicalin steam consumption. With one large andeconomical plant, it is estimated that gas canbe pumped at 60 to 75 lbs. pressure at a costof 2 cts. per 1,000 cu. ft., including the main-tenance of the station. Tests of the power required to pump 10,000cu. ft. per hour of gas at 63° F. against gagepressure of 10 to 42 lbs. per sq. in. gave a flat at the gasholder) l)eing about 2 to 3 ins. ofmercury In the latter case the pipe was laidaround the Aurora gas works with such longcurves that they could practically be ignored. In regard to the effect of compression uponthe (|uality of coal gas and water gas. states that there is already a tendencytowards higher pressures than those now cm-ployed, and that there is immediate need of 4110 COMPRESSED AIR. TESTS OF FLOW OF GAS IN PIPES , Gage pr 21 miles essui-e of i- ?in. pipe — Dellv ery
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcompres, bookyear1896
