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    Lampiran Perhitungan Efisiensi Kompresor Udara

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    Ahmad Ghufran Il Principino
    This document contains calculations to determine the efficiency of an air compressor. It calculates the volume and power requirements at each stage of the compressor. It then sums the total power required and determines the shaft horsepower. It accounts for correction factors to calculate the actual steam consumption and rate. The summary shows that with a flow rate of 39,000 kg/h, actual shaft power of 7,407.45 kW, and steam consumption of 38,688 kg/h, the calculated efficiency of the compressor is 96.09697%.

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    Lampiran Perhitungan Efisiensi Kompresor Udara

    Uploaded by

    Ahmad Ghufran Il Principino
    77 views3 pages
    This document contains calculations to determine the efficiency of an air compressor. It calculates the volume and power requirements at each stage of the compressor. It then sums the total power required and determines the shaft horsepower. It accounts for correction factors to calculate the actual steam consumption and rate. The summary shows that with a flow rate of 39,000 kg/h, actual shaft power of 7,407.45 kW, and steam consumption of 38,688 kg/h, the calculated efficiency of the compressor is 96.09697%.

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    This document contains calculations to determine the efficiency of an air compressor. It calculates the volume and power requirements at each stage of the compressor. It then sums the total power required and determines the shaft horsepower. It accounts for correction factors to calculate the actual steam consumption and rate. The summary shows that with a flow rate of 39,000 kg/h, actual shaft power of 7,407.45 kW, and steam consumption of 38,688 kg/h, the calculated efficiency of the compressor is 96.09697%.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    77 views3 pages

    Lampiran Perhitungan Efisiensi Kompresor Udara

    Uploaded by

    Ahmad Ghufran Il Principino
    This document contains calculations to determine the efficiency of an air compressor. It calculates the volume and power requirements at each stage of the compressor. It then sums the total power required and determines the shaft horsepower. It accounts for correction factors to calculate the actual steam consumption and rate. The summary shows that with a flow rate of 39,000 kg/h, actual shaft power of 7,407.45 kW, and steam consumption of 38,688 kg/h, the calculated efficiency of the compressor is 96.09697%.

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    © All Rights Reserved
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    of 3

    LAMPIRAN PERHITUNGAN EFISIENSI KOMPRESOR UDARA 51-101-J

    Data perhitungan

    FRC 4 = 39000 Nm3/h PG 83 = 8 kg/cm2

    TG 48 = 28,6 kg/cm2 PG 84 = 12,5 kg/cm2

    PG 80 = 0,9332 kg/cm2 PG 85 = 16 kg/cm2

    PG 81 = 2,1 kg/cm2 PG 86 = 16 kg/cm2

    PG 82 = 1,5 kg/cm2 PG 6 = 34 kg/cm2

    1. Volume suction stage 1 aktual


    1,0332 𝑥 (273+𝑇𝐺 48)
    V1 = FRC 4 x 𝑃𝐺 80 𝑋 273
    1,0332 𝑥 (273+28,6)
    = 39000 x 0,9332 𝑋 273
    3
    = 47702,7 m /h

    2. Volume suction stage 2 aktual


    1,0332 𝑥 (273+𝑇𝐺 48)
    V2 = FRC 4 x 𝑃𝐺 82 𝑋 273
    1,0332 𝑥 (273+28,6)
    = 39000 x 1,5 𝑋 273
    = 29677,44 m3/h

    3. Volume suction stage 3 aktual


    1,0332 𝑥 (273+𝑇𝐺 48)
    V3 = FRC 4 x 𝑃𝐺 84 𝑋 273
    1,0332 𝑥 (273+28,6)
    = 39000 x 12,5 𝑋 273
    = 3561,2928 m3/h

    4. Volume suction stage 4 aktual


    1,0332 𝑥 (273+𝑇𝐺 48)
    V4 = FRC 4 x 𝑃𝐺 86 𝑋 273
    1,0332 𝑥 (273+28,6)
    = 39000 x
    16 𝑋 273
    = 2782,26 m3/h

    5. Power stage 1
    1,4−1
    1,4 𝑃𝐺 80 𝑥 𝑉1 𝑃𝐺 81 1,4
    N1 = 1,4−1 x x -1
    0,612 𝑥 60 𝑃𝐺 80

    1,4−1
    1,4 0,9332 𝑥 47702,7 2,1 1,4
    = 1,4−1 x 0,612 𝑥 60
    x 0,9322 –1
    = 1137,6221 Kw
    6. Power stage 2
    1,4−1
    1,4 𝑃𝐺 82 𝑥 𝑉2 𝑃𝐺 83 1,4
    N2 = 1,4−1 x x -1
    0,612 𝑥 60 𝑃𝐺 82

    1,4−1
    1,4 1,5 𝑥 29677,44 8 1,4
    = 1,4−1 x x –1
    0,612 𝑥 60 1,5
    = 2684,6142 Kw

    7. Power stage 3
    1,4−1
    1,4 𝑃𝐺 84 𝑥 𝑉3 𝑃𝐺 85 1,4
    N3 = 1,4−1 x x -1
    0,612 𝑥 60 𝑃𝐺 84

    1,4−1
    1,4 12,5 𝑥 3561,2928 16 1,4
    = 1,4−1 x x –1
    0,612 𝑥 60 12,5
    = 314,8981Kw

    8. Power stage 4
    1,4−1
    1,4 𝑃𝐺 86 𝑥 𝑉4 𝑃𝐺 6 1,4
    N4 = 1,4−1 x x 𝑃𝐺 86 -1
    0,612 𝑥 60

    1,4−1
    1,4 16 𝑥 2782,26 34 1,4
    = 1,4−1 x x –1
    0,612 𝑥 60 16
    = 1048,0811 Kw

    9. Jumlah Power
    ∑𝑁 = 𝑁1 + 𝑁2 + 𝑁3 + 𝑁4
    = 5185,2155 KW

    10. Shaft Horse Power


    ∑𝑁
    SHP = 𝜂
    5185,2155
    = 0,7
    = 7407,4508 Kw

    11. Correction Factor (nilai didapat dari grafik)


    ∆1 = 0,25 (Inlet steam pressure = 39 kg/cm2)
    ∆2 = 0 (Inlet steam temperature = 3210C)
    ∆3 = 0,5 (exhaust steam pressure = 0,17 kg/cm2)
    ∆4 = 0,05 (speed = 7200 rpm)

    12. Corrected Steam Consumption


    ∆1+∆2+∆3+∆4
    G’ =Gx(1- )
    100
    = 39000 kg/h x 0,992
    = 38688 kg/h
    13. Steam rate
    SR = G’/SHP
    = 5,223 kg/kw.h

    SUMMARY

    Compressor Design Rated Design Normal Actual


    Flow rate dry base (kg/h) 41400 38141 39000
    compressor speed (rpm) 7500 7340 7210
    Shaft Power (Kw) 8160 7620 7407,451
    Turbin Design Rated Design Normal Actual
    Output (Kw) 8100 7220 7407,451
    Speed (rpm) 7500 7340 7210
    Steam rate (kg/kw.h) 5,005 5,019 5,222849
    Steam consumption (kg/h) 40540 38250 39000
    Corection Steam Cons (kg/h) 38688
    Efficency (%) 96,09697

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