Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 417
ystem ofreheatine which increases the volume without at the sametime increasing- the pressure. Fio- 7 is a diao-ram which illustrates a typical case inAmerican practice, where air is admitted to a compressor at60° and compressed adiabatically to 100 pounds pressure.It is then transmitted a… … Fig. 7.shown in the diagram are extreme and purely theoretical. Inactual practice both compression and expansion are onlyapproximately adiabatic. Fig. 8 illustrates an economical condition of compressedair use in mines and tunnels. The power is generated elec-trically and is conveyed by wire to a…
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