. Bulletin . 519,360 3,851,520 4,158,720 4,362, 240 4,713,600 4,972,800 5,136,000 5,443,200 5,665,920 5,882,880 6,086,400 ,080 6,480,000 6,666,240 6,852, 480 7,038,720 7,616,640 8,277,120 8,678,400 9,114, 240 9,528,960 9,951,360 10,281,600 10,634,880 ,080 11,249,280 ,280 12,063,360 12,568,320 12,852, 480 14, 15,375,360 16, 16,744,320 17 310,720 18,193,920 19,574,400 20,870,400 21,390,720 40 CONDENSATION OF GASOLINE FROM NATURAL GAS. Multipliers for pipe diameters other than given in Table 3.[Apply the multiplier to the figures given in Table
. Bulletin . 519,360 3,851,520 4,158,720 4,362, 240 4,713,600 4,972,800 5,136,000 5,443,200 5,665,920 5,882,880 6,086,400 ,080 6,480,000 6,666,240 6,852, 480 7,038,720 7,616,640 8,277,120 8,678,400 9,114, 240 9,528,960 9,951,360 10,281,600 10,634,880 ,080 11,249,280 ,280 12,063,360 12,568,320 12,852, 480 14, 15,375,360 16, 16,744,320 17 310,720 18,193,920 19,574,400 20,870,400 21,390,720 40 CONDENSATION OF GASOLINE FROM NATURAL GAS. Multipliers for pipe diameters other than given in Table 3.[Apply the multiplier to the figures given in Table 3 for 1-inch tubing.] Diameterof pipe. Multiplier. Diameterof pipe. Multiplier. Diameterof pipe. Multiplier. *ift 5 18 25 Inches. °8 6 6i 6f 8 36 39 64 Inches. 8^ 9 10 12 68 81 100 144 PITOT TUBE WITH ATTACHMENT FOR MEASURING STATIC PRESSURES. For the most accurate measurements by means of the Pitot tubea device is attached for recording static pressures (fig. 5). Accord-. Figure 5.—Pitot tube with attachment for measuring static pressures. ing to Rowse a the piezometer or its equivalent is the most reliablemeans of obtaining the static pressure. This device embraces apipe with a few very small circular holes in it, so combined with alarger pipe as to leave an annular space bet weenthem (fig. 5). Thisannular space is closed at the outer end, the other being connectedto one end of the gage glass by means of a rubber tube. The otherend of the gage glass is so connected to the Pitot tube as to give thedynamic pressure. The difference between the two pressures (thevelocity head) is read on the gage glass. a Rowse, W. C, Pitot tubes for gas measurement: Jour. Am. Soc. Mech. Eng., vol. 39, September, 1913,p. 1341. TESTING NATURAL GASES FOR GASOLINE CONTENT. 41 FORMULA FOR ACCURATE DETERMINATIONS. The following data are given here in order to show the derivationof a formula for use in more accurately determining the flow of gasthrough a pipe tha
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