Van Nostrand's engineering magazine . 19, a creased 905° Centigrade, while in theand b were the points of maximum pressure, second hundredth it had diminished about 456 VAN NOSTRAND fe ENGINEERING MAGAZINE. ] 89° Centigrade. Within a limit of onetwenty-fifth of a second there was a pointwhere the increase of temperature ceased,and where a fall of temperature did this mean ? Why did the in-crease of temperature cease in so suddena manner and a fall of temperature setin? From the point d to a the temperaturehad been increasing, this increase beingdue to the progress of the flame; at t
Van Nostrand's engineering magazine . 19, a creased 905° Centigrade, while in theand b were the points of maximum pressure, second hundredth it had diminished about 456 VAN NOSTRAND fe ENGINEERING MAGAZINE. ] 89° Centigrade. Within a limit of onetwenty-fifth of a second there was a pointwhere the increase of temperature ceased,and where a fall of temperature did this mean ? Why did the in-crease of temperature cease in so suddena manner and a fall of temperature setin? From the point d to a the temperaturehad been increasing, this increase beingdue to the progress of the flame; at the f the volume had changed so slightly thatthe rate of cooling con Id not have in-creased appreciably. The amount ofwork done in that movement was alsorelatively insignificant, and yet from somecause the increase of temperature goingon with such rapidity, 905° in one-fiftiethof a second, had not only diminished, butan opposite effect had set in. It couldnot be supposed for a moment that theprogress of the flame had been abruptly. Engine speed 150 revolutions per minute. One division of circle=one-fiftietu part of a second at above speed. point a the increase ceased, and a fall setin. Take the point e, then the averagetemperature was 632° Centigrade ; frome to a the time taken one-fiftieth of asecond, and the temperature rose to1,537° Centigrade; in that time it hadincreased by 905° ; suppose the samerate of increase to continue for anotherone-fiftieth of a second, the pressurewould rise to the point /, and the tem-perature would be 2,442° Centigrade, thepoints g and h showed the effect of fur-ther increase. But the increase Ladabruptly ceased at the point a ; from a to stopped by any cause other than com-pleted inflammation of the whole flame which in one instant o£ timehad been flashing through the exposionmixture had reached the enclosing walls,it had uniformly heated the whole com-bustible mass, and in the next instant thetemperature b. gan to fall; the law
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
