7.3 COMPRESSION PROCESSES Just as e

7.3 COMPRESSION PROCESSES
Just as expansion processes result in pressure reductions in a flowing fluid, so compr
processes bring about pressure increases. Compressors, pumps, fans, blowers, and va
pumps are all devices designed for this purpose. They are vital for the transport of
for fluidization of particulate solids, for bringing fluids to the proper pressure for reac
processing, etc. We are here concerned not with the design of such devices, but with specif
of energy requirements for steady-state compression of fluids from one pressure to a high
Compressors
The compression of gases may be accomplished in equipment with rotating blades
turbine operating in reverse) or in cylinders with reciprocating pistons. Rotary equipm
used for high-volume flow where the discharge pressure is not too high. For high pre
reciprocating compressors are required.
The energy equations are independent of the type of equipment; indeed, they a
same as for turbines or expanders, because here too potential- and kinetic-energy c
are presumed negligible. Thus, Eqs. (7.13) through (7.15) apply to adiabatic compres
process represented by Fig. 7.5.
Compressor
~~37 Figure 7.5 Steady-state compression process

7.3 COMPRESSION PROCESSES 
Just as expansion processes result in pressure reductions in a flowing fluid, so compr
processes bring about pressure increases. Compressors, pumps, fans, blowers, and va
pumps are all devices designed for this purpose. They are vital for the transport of 
for fluidization of particulate solids, for bringing fluids to the proper pressure for reac
processing, etc. We are here concerned not with the design of such devices, but with specif
of energy requirements for steady-state compression of fluids from one pressure to a high
Compressors 
The compression of gases may be accomplished in equipment with rotating blades 
turbine operating in reverse) or in cylinders with reciprocating pistons. Rotary equipm
used for high-volume flow where the discharge pressure is not too high. For high pre
reciprocating compressors are required. 
The energy equations are independent of the type of equipment; indeed, they a
same as for turbines or expanders, because here too potential- and kinetic-energy c
are presumed negligible. Thus, Eqs. (7.13) through (7.15) apply to adiabatic compres
process represented by Fig. 7.5. 
Compressor 
~~37 Figure 7.5 Steady-state compression process

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7.3 COMPRESSION PROCESSES Just as expansion processes result in pressure reductions in a flowing fluid, so comprprocesses bring about pressure increases. Compressors, pumps, fans, blowers, and vapumps are all devices designed for this purpose. They are vital for the transport of for fluidization of particulate solids, for bringing fluids to the proper pressure for reacprocessing, etc. We are here concerned not with the design of such devices, but with specifof energy requirements for steady-state compression of fluids from one pressure to a highCompressors The compression of gases may be accomplished in equipment with rotating blades turbine operating in reverse) or in cylinders with reciprocating pistons. Rotary equipmused for high-volume flow where the discharge pressure is not too high. For high prereciprocating compressors are required. The energy equations are independent of the type of equipment; indeed, they asame as for turbines or expanders, because here too potential- and kinetic-energy care presumed negligible. Thus, Eqs. (7.13) through (7.15) apply to adiabatic compresprocess represented by Fig. 7.5. Compressor ~~37 Figure 7.5 Steady-state compression process

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7.3 PROSES KOMPRESI
Sama seperti proses ekspansi mengakibatkan penurunan tekanan dalam cairan mengalir, sehingga compr
proses membawa tekanan meningkat. Kompresor, pompa, kipas angin, blower, dan va
pompa semua perangkat yang dirancang untuk tujuan ini. Mereka sangat penting untuk pengangkutan
untuk fluidisasi partikulat padat, untuk membawa cairan dengan tekanan yang tepat untuk reaksi yang
pengolahan, dll Kami di sini khawatir tidak dengan desain perangkat tersebut, namun dengan specif
dari kebutuhan energi untuk kompresi kondisi mapan cairan dari satu tekanan untuk tinggi
Kompresor
kompresi gas dapat dicapai dalam peralatan dengan memutar pisau
turbin beroperasi secara terbalik) atau silinder dengan piston reciprocating. Rotary equipm
digunakan untuk aliran volume tinggi di mana tekanan debit tidak terlalu tinggi. Untuk tinggi pra
. kompresor reciprocating diperlukan
Persamaan energi independen dari jenis peralatan; memang, mereka yang
sama untuk turbin atau ekspander, karena di sini juga potential- dan kinetik energi c
diduga diabaikan. Dengan demikian, pers. (7.13) sampai (7.15) berlaku untuk compres adiabatik
proses diwakili oleh Gambar. 7.5.
Compressor
~~ 37 Gambar proses kompresi 7,5 Steady-state

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