The Gas Engineer's Pocket-book, Comprising Tables, Notes, and Memoranda Relating to the Manufacture, Distribution, and Use of Coal Gas and the Construction of Gas WorksCrosby Lockwood and son, 1901 - 454 Seiten |
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
acetylene acid ammonia ascension pipe average benzene benzol boiler bolts bricks brickwork burner candle power carbon carburetted cast iron cement cent centre chimney Circum clay CO₂ coal gas coke combustion condensers contains copper cubic centimetres cubic feet cubic feet gas cubic foot cylinder D. K. Clark deposited depth distilled equals feet of gas flame flange flue fuel furnace gallons gas engine gases gasholder girder grains H₂S heat holder horse-power hour hydraulic main hydrocarbons hydrogen illuminating power inches diameter inches thick length light lime load melts metal meter millimetres mouthpiece napthalene ordinary oxide oxygen pentane photometer pitch plate purifiers quantity Resistance retort house rivets sand scrubbers sheets specific gravity square feet square foot square inch steam Steel strain strength sulphate sulphur surface tank temperature testing tons tube vapour velocity volume wall water gas weight Width wrought iron yards
Beliebte Passagen
Seite 398 - The gas in the photometer is to be lighted at least fifteen minutes before the testings begin, and it is to be kept continuously burning from the beginning to the end of the tests. Each testing shall include ten observations of the photometer made at intervals of a minute. The consumption of the gas is to be carefully adjusted to five cubic feet per hour.
Seite 166 - XL, where pm = the mean effective pressure in pounds per square inch, a = the area of the piston in square inches, and L = the length of the stroke of the piston in feet.
Seite 408 - Examiner shall, not less often than once a month, compare the aerorthometer readings with the reciprocal of the tabular number deduced from observations of the barometer and thermometer, and if there is a difference of more than one-half per cent, the instruments are to be readjusted. As TO THE MODE OF TESTING THE PRESSURE AT WHICH GAS is SUPPLIED.
Seite 403 - Test-paper is found to have taken place, this is to be held conclusive as to the presence of Sulphuretted Hydrogen in the gas. Fresh Test-slips are to be placed in the Apparatus every day. In the event of any impurity being discovered, one of the Test-slips shall be placed in a stoppered bottle and kept in the dark at the Testing-place ; the remaining slips shall be forwarded with the daily Report.
Seite 196 - Light carburetted hydrogen . 1'60 ,, When water has been saturated with one gas and is exposed to the influence of a second, it usually allows a portion of the first to escape whilst it absorbs an equivalent quantity of the second. In this way a small portion of a not easily soluble gas can expel a large volume of an easily soluble one.
Seite 403 - ... of ammonia. The correctness of the result to be obtained depends upon the fulfilment of two conditions : — 1. The preparation of test-solutions having the proper strength. 2. The accurate performance of the operation of testing. To prepare the test-solutions, the following processes may be used by the Gas Examiner. Measure a gallon of distilled water into a clean earthenware jar, or other suitable vessel. Add to this 94 septems of pure concentrated sulphuric acid, and mix thoroughly.
Seite 406 - One half of the liquid so obtained is to be set aside in case it should be desirable to repeat the determination of the amount of sulphur which the liquid contains. This portion is to be examined under the same conditions as have been prescribed for the examination of the second portion of the liquid obtained from the apparatus used in testing for ammonia ; unless thus previously used, it is to be preserved, in a bottle properly labelled, for one week.
Seite 399 - The consumption of the gas is to be carefully adjusted to five cubic feet per hour. The candles are to be lighted at least ten minutes before beginning each testing, so as to arrive at their normal rate of burning, which is shown when the wick is slightly bent and the tip glowing.
Seite 405 - ... in the horizontal position. The lever is then made to rest against the catch so as to turn on the gas. The index is then turned back to a little short of zero, and the burner lighted. When the index is close to zero; the trumpet-tube is placed in position on the stand, and its narrow end connected 'with the
Seite 406 - ... of the meter, so that both may be stopped at the same moment when ten cubic feet of gas have passed through the meter. The clock is to be started and set right, and the time is to be recorded. After each testing the flask or beaker, which has received the liquid products of the combustion of the ten cubic feet of gas, is to be emptied into a measuring cylinder and then replaced to receive the washings of the condenser. Next the trumpet-tube is to be removed and well washed out into the measuring...