. Railway mechanical engineer . in Fig. 5 is plotted from the average of fruittemperatures taken at the bottom and top layers of number 3, 5, 7 and 9 were averaged to show the fruittemperatures of the top layer; bulbs number 4, 6, 8 and 11were used for averaging fruit temperatures in the iipttomlayer. This chart and tlie data in Table I, giving the tem-perature comparisons in both cars, show that at times therewas no difference in the temperature of the fruit in the bot-tom and top layers of car CGW 30000; that the maximumdifference was deg. F., and the average difference was0.
. Railway mechanical engineer . in Fig. 5 is plotted from the average of fruittemperatures taken at the bottom and top layers of number 3, 5, 7 and 9 were averaged to show the fruittemperatures of the top layer; bulbs number 4, 6, 8 and 11were used for averaging fruit temperatures in the iipttomlayer. This chart and tlie data in Table I, giving the tem-perature comparisons in both cars, show that at times therewas no difference in the temperature of the fruit in the bot-tom and top layers of car CGW 30000; that the maximumdifference was deg. F., and the average difference deg. F. The minimum difference in the temperatures of the fruitin the bottom and top layers of SFRD 12646 was deg. January, 1920 RAILWAY MECHANICAL ENGINEER 31 F. The maximum difierence was deg. F., and the aver-age difference was deg. F. The maximum differenceoccurred at the commencement of tlie test while tlie tempera-ture of the fruit was being reduced. The marked uniformity- in the temperature of the fruit in. l^pfS^i I i FfoMlinum ^ FJar/in 24- +J Fig. 4. Cross Section of Car A. T. & S. ,646 I CellularBlxks Incased/ \ 1 . , .1 in Rubberoid Roofing \ e\ car CGW oOOOO demonstrated a uniform circulation of re-frigerated air throughout the entire load. The temperatureof bulb No. 2 in SFRD 12646, located six inches below theceilins; at the geometric center of the car, fluctuated consid- refrigeration system, any heat passing through the roof ofthe car must have been prevented from reaching the load byits immediate absorption by the ice in tlie overhead tanks. At the time the fruit was loaded its temperature was 59deg. F. At the time tlie car was sealed the average tempera-ture of tlie fruit in the top layer of CGW 30000 was F. and in the bottom layer deg. F. The tempera-ture in the top layer of SFRD 12646 was deg. F. andin the bottom layer deg. F. This shows that the fruitin the bottom layer of the latter car had cooled deg. F.;wh
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
