Ενεργειακά Συστήματα Πλοιου Θέμα 2

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Ενεργειακά συστήματα πλοίου θέμα 2 - σύστημα αεριοστροβίλου/ατμοστροβίλου με LNG

Transcript of Ενεργειακά Συστήματα Πλοιου Θέμα 2

  • 2

    A. : 2014 2015

    Joule Rankine.1 . , 1.013 bar -161.6 C. , . () (). , , , . . , . () ( ) 20C , . ( ) , .

    . , .

    W GT MW 28

    Pa2 bar 19

    1 , . , 2009.

    1

  • T g3 C 1400

    *

    P0 bar 80

    *

    P bar 16

    *

    C 280

    N [] 24

    1:

    *

    ( ) , .

    1 : ( f2), ( a2) , ( g4) , , (ma , m f , mg) , (G T ) (W C F)

    . , /.

    1 bar 19 bar, r c=

    Pa2Pa1

    =19[ba r ]1[ba r ]

    =19 ( ) .

    c=0.85

    , a=1.4 ka=a1a

    =0.2857 . (6.31),

    15C, : T a2=T a1[1+rc

    k a1c

    ]=462.01C

    1.013 bar ( ) -161.6 C. , r cf=18.7562 2 cf=0.82 . ,

    2 , 19 bar. , 1.013 bar () , 1 bar .

    2

  • f=1.3062 k f= f1 f

    =0.2344 3 (6.31) ,

    T f2=T f1[1+r cf

    k f1 f

    ] = 27.36 C

    462.01 C -27.36 C, 19 bar. (6.41):

    m f[H u+c pf(T f2T 0)]b = ma[(1+ f )c pg(T g3T 0)c pa(T a2T 0)] 4

    ( H u = 50000kJkg

    ), 0 = 20 C ( , ).

    f /, f = m fma

    .

    f , :

    f =c pg (T g3T 0)c pa(T a2T 0)

    b[H u+c pf (T f2T 0)c pg(T g3T 0)]= 0.0245

    2%, Pg3=18.62 ba r . To 1.05 bar, r T=17.733 . =0.87 . g=1.33 k g=0.2481 . (6.32)

    g4 = T g3[1 (1r tk g)] = 657.61 C 5

    . , . (6.38)

    W GT = mma [c pg(T g3T g4)c pa(T a2T a1)]

    : 28 MW. ,

    3 H f , CH 4

    4 1 c pf(T f2T 0) . H u

    5 1400C

    3

  • ma =W G T

    m[c pg (T g3T g4)c pa(T a2T a1)]= 64.7780 kg

    s m=0.98 .

    A f m f = 1.5867

    kgs, mg = 66.3647

    kgs

    .

    (6.39)

    G T =W G Tm f H u

    =28000 kJ

    s

    50000 kJkg1.5867kgs

    = 0. 3529

    2 (m0) (m ) ,

    T g7 , T g9 , T g11 , 9 = 50 C

    . = m

    m0= 0.15

    /. 6:

    T g7 T 13Y+15 C ( )

    T g9 T 13X+15 C ( )

    T g11 120 C ( )

    = mg c pg = 76.09[kWK

    ]

    = 0.98 ().

    :

    (T g4T g11)=m0[h0+h (1+)h9]

    6 O g , ,

    4

  • A ,

    min (510 C , T g440 C ) = min(510 C , 617.61 C ) = 510 C

    / (, ). , 12 12, 11 11, . p = 0.82 .

    11 12 p =h12X 'h11Xh12Xh11X

    , h12X '

    ( Mollier). h12X . h13X . Mollier 7

    bar C kJ

    kg

    11X 1.1 95 398.0512X 18.8 95.2 400.2513X 18 207.11 ( = T s ) 884.58 (. )14X 18 207.11 ( = T s ) 2794.8 (. )X 16 280 2993.111 1.1 95 398.0512 83.8 95.2 405.5113 83 297.55 ( = T s ) 1331.4 (. )14 83 297.55 ( = T s ) 2755.5 (. )

    0 (Y) 80 510 3416.3 2: /

    , .

    O :

    7 , , .

    5

  • T g7 312.55 C ( . )

    T g9 222.11 C ( . )

    T g11 120 C ( )

    , . T g11=(T g11)min=120 C .

    B(T g4T g11) = m0[h0+h (1+)h9]

    m0 ( ) m0 = 11.2869kgs

    g4 g7 0 13 (), 14 ()

    B(T g4T g7) = m0[(h0h13Y)+ (hXh14X)]

    g7 T g7 = 343.95 C > T 13Y+15 = 312.55 C .

    g7 g9 13 14 (), 13 13 (),

    B(T g7T g9) = m0[(h13Yh12Y)+(h14Xh13X)]

    T g9 g9 = 164.11 C < T 13X+15 = 222.11C .

    . T g9 = 222.11 C . g9 g11 9 13

    B(T g9T g11) = m0[(1+)(h10h9)+(h13Xh12X)]

    m0 = 10.0503kgs

    T g7 = 382.24 > 312.55 C , T g11 = 178.90 > 120 C

    6

  • .

    .

    g4 g5 g6 g7 g8 g9 g10 g11 (C)

    657.61 570.34 566.41 382.24 259.95 222.11 212.51 178.90

    3: (: / 50C )

    E 3 , ,

    , , .

    , m0 = 10.0503kgs

    ( #1) 76 bar ( 5% ) 15.2 bar, . , h1 = h0 = 3416.3

    kJkg .

    505.29 C. , m = 1.3920

    kgs ( 1%

    ) 15.2 bar ( 5% ) 8 , , 0.05 bar.

    A . , me2 = 6N = 624 = 144

    kgh

    = 0.04 kgs .

    . , . :

    8 ' 15.2 bar

    7

  • mD = m+m+m+V .

    , . , . (3.6.2):

    V . = 0.3

    m3

    day

    N V . = 0.0000832m3

    s.

    998 kgm3

    ( 20C).

    ,

    mD = 0.1987kgs

    q = 1400

    kJkg

    QD=mDq = 278.24kW .

    me1 =QD

    he1hc1[1]

    me1 ,he1 hc1 .

    . 2 ( ), 4 ( ), e ( ), 5 ( ), - - . .

    ,

    W AE = m0(h0hp1)+m4(h4h p2) [2]

    h p1 , h p2 , , ., h0h p1 h4hp2

    8

  • .

    . i1 i2 , (3.3.1) SL1 =

    h0 hi1h0 h p1

    [3a] SL2 =h4 hi2h4 h p2

    [3b] .

    . hEL = 0.02[(h0 hi1)+(h4 hi2)] [4].

    ,

    W wHP = m0(h0 h2) [5a]

    W wLP = m4(h4 he)+(m4me )(hehw) [5b]

    hw .

    W sLP =W wLP

    1+rML+r RL[6a]

    W sHP =W wHP

    1+rML+r RL[6b]

    rML r RL , .

    , rML = 0.035 (3.5%) , ( ).

    , h p1 = 2951.8kJkg

    h p2 = 2060.1kJkg

    . [2], :

    W AE = 20219.56.99 PS = 14871.70 kW 9

    80% ,

    W = 11897.36 kW = 16175.65 PS

    9 h4 = h p1

    9

  • . 5 . .. b = 0.8276 . f t = 1.01 . SL = f tb = 0.8358 . Y , SL1 = SL2 = SL . [3a], [3b] hi1 = 3028.05

    kJkg

    , hi2 = 2218.3kJkg

    . A [4]

    , hEL = 23.875kJkg .

    ( , ). 3 bar ( ) e. Mollier, he = 2740

    kJkg '

    he1 = he2 = 2740kJkg

    [1] me1 = 0.1156

    kgs

    me = 0.1556kgs

    ( & ).

    hw = 2242.2kJkg . [5a], [5b]

    W w = 8866.05 kW W w = 3902.19 kW

    [6a], [6b]

    W s = 8566.23 kWW s = 3770.03 kW

    W = 12336.5 kW = 16772.75 PS

    ' 0.1%. , ( 80%) W = 11897.36 kW = 16175.65 PS W = 12336.5 kW = 16772.75 PS . = 3.69% .

    10

  • , . .

    W kW 12376.79

    W kW 3786.41 W kW 8590.39

    SL - 0.8395

    f t - 1.01

    E

    h0 kJ

    kg3416.3

    .

    hi1 = h2 kJkg

    3026.4

    E

    h3 kJkg

    2993.1

    h4 kJkg

    3022.3

    .

    hi2 kJkg

    2214.6

    .

    hEL kJkg

    23.954

    hw = h5 kJkg

    2238.5*

    he = he1 = he2 kJkg

    2735

    m0 kg

    s10.0503

    ( ) m kgs

    1.5075

    ( ) m3 kgs

    1.3920

    11

  • ( 4) m4 kgs

    11.4423

    me (= me1+me2) kgs

    0.1559

    me1 kgs

    0.1159

    me2 kgs

    0.04

    mc kgs

    11.2864

    4:

    * ( 0.05 bar ) , 0.8667, )

    . 0.05 bar ( #6) 1 bar. ( = m7 = mc) , ( = mc1 = me1) , ( = mc2 = me2) .

    p = 0.82 . h6 = h ' 0.05 ba r = 137.77

    kJkg . H

    s6 = s ' 0.05 ba r = 0.4763kJkgK

    . 7' 1 bar, h7' = 138.04

    kJkg

    .

    p =h7 ' h6h7 h6

    [7].

    7 = 138.10kJkg

    m8h8 = mc1hc1+m7h7+mc2hc2+mw hw [8]

    8 , c1 , c2 w10 o .10 w

    5 .

    12

  • : m8 = m0+m = 11.5579kJkg

    ,

    mc1 = me1 = 0.1145kgs, hc1 = h(1 bar ,79.63 C) = 333.346

    kJkg

    11

    m7 = mc = 11.2864kgs

    mw = m = 0.01(1+)m0 = 0.1156kgs, hw = h(1 ba r , 20 C ) = 84

    kJkg

    [8], h8 = 139.35kJkg

    . 8 9 7, ' h9 = 139.47

    kJkg

    T 9 = 33.24 C

    50C. 10C, .

    , , T 9 = 33.24 C . , , .

    bar C KJ/kg Kg/sf1 1.013 -161.6 - 1.5867f2 19 -27.26 - 1.5867a1 1 15 - 64.7780a2 19 462 - 64.7780g3 18.62 1400 - 66.3647g4 1.05 657.61 - 66.3647g5 - 570.34 - 66.3647g6 - 566.41 - 66.3647g7 - 382.24 - 66.3647g8 - 259.95 - 66.3647g9 - 222.11 - 66.3647

    g10 - 212.51 - 66.3647g11 - 168.2812 - 66.3647

    11 , c1 ( ) 20 C 1 bar

    12 2 , .

    13

  • e 3 140.29 2740 0.1556e1 3 140.29 2740 0.1156e2 3 140.29 2740 0.04c1 1 79.63 333.446 0.1156c2 1 79.63 333.446 0.04w 1 20 84 0.1156

    bar C KJ/kg Kg/s

    0 80 510 3416.3 10.05031 76 505.29 3416.3 10.05032 15.2 294.29 3027.2 10.05033 15.2 280 2993.1 1.39204 15.2 293.46 3023.1 11.44235 0.05 32.88 2240.4* 11.28676 0.05 32.90 137.77 11.28677 1 32.94 138.10 11.28678 1 33.23 139.35 11.55799 2