The analysis of fuel, gas, water, and lubricants . I ^4 I i Fig. 35.—C^o^3S section of Parr bomb. within a chamber capable of receiving oxygen under a pressureof 25 to 30 atmospheres. Figure 35 represents such a bomb, theessential parts of which are the cover, C, held in place by the11 161 162 FUEL, GAS, WATER AND LUBRICATION screw clamp, A, the supporting wires, D, for the fuel tray, //,which also are the terminals for conducting the electric currentthrough the fine fuse wire. The assembling of the bomb in the rv^. Fig. 36.—Parr oxygen bomb calorimeter, showing details of construction
The analysis of fuel, gas, water, and lubricants . I ^4 I i Fig. 35.—C^o^3S section of Parr bomb. within a chamber capable of receiving oxygen under a pressureof 25 to 30 atmospheres. Figure 35 represents such a bomb, theessential parts of which are the cover, C, held in place by the11 161 162 FUEL, GAS, WATER AND LUBRICATION screw clamp, A, the supporting wires, D, for the fuel tray, //,which also are the terminals for conducting the electric currentthrough the fine fuse wire. The assembling of the bomb in the rv^. Fig. 36.—Parr oxygen bomb calorimeter, showing details of construction. calorimeter proper is shown in Fig. 36. The bomb is placed alittle to one side of the center of an oval can thus leaving spaceat one axis of the oval for a stirrer, S, and at the other for athermometer, T. Protection from heat interchanges with the CALORIMETRY USING THE OXYGEN BOMB 163 surrounding air is provided by walls of indurated fiber with anair space between and this arrangement is continuous for sides,bottom and top. Another method of insulation by circulationof water through the jacketing spaces is also to be noted. Thefuse wire is No. 34, Brown & Sharpe gage, and is usually ofpure iron though on some accounts a wire more resistant tooxidation is desirable. A current of low voltage 10 to 15 voltsis to be preferred so that arcing within the calorimeter may beavoided. The capsule should be immune to chemical action and ifof sufficient size the necessity of compressing the fuel into atablet is obviated
Size: 1317px × 1897px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectchemist, bookyear1922
