thiet ke he thong say thung quay

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  • 7/29/2019 Thiet Ke He Thong Say Thung Quay

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    1

    1. 1.1

    -

    , .

    -

    1.2 -

    .

    - . - - -7 :

    - - -4) mm .

    - ph nhn (14-20)% - ha .

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    2

    1.3 1.3.1

    - t

    - Tuy nhin :

    .

    Ly tm

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    3

    1.3.2 - (75-90) .- .-

    .

    - .

    - .- ,

    - .- 20-45)%

    n theo tiu ch TCVN - .

    2. 2.1

    - .

    - nhn , mm quay hi .

    - -1/50

    .

    - 0 0

    .-

    khng

    -

    .

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    4

    2.2 - nh

    .- 0 0

    1 1.

    - - . .

    - -12) .

    - ne .

    - . Qu tm.

    3. 3.1

    - G1, G2 (kg/h) .1, 2:

    W (kg/h): .- :

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    5

    - L :

    - :

    3.2

    3.2.1 3.2.1.1

    - calorifer

    Nh t0 = 230C 0= 82 %.

    :

    : ; pa = 0, 981 bar.Enthalpy: . : :

    - th (TNS):

    : ,

    .

    - 80)0C.

    0 0C nn .

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    6

    :

    0 = d1 :

    %.

    1= I2 :

    Suy ra, %

    Theo 0C

    -

    .

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    7

    .

    t

    (C)(%)

    d

    kkk)I

    (kJ/kg kkk)

    Ph

    (bar)(m

    3/kg kk)

    23 82 0,015 61,00 0,028 0,89

    80 5,0 0,015 119.8 0,470 1,06 39 67 0,03144 119,8 0,0694 0,96

    - : 0 (kg kkk /h).

    :

    Suy ra :

    :

    :

    :

    :

    - :Trn t mt (VLS) . bs =0; Qct =0.

    : lorifer: : [ ]

    N : : ra: : Qmt

    - [ ] Hay

    [ ]

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    8

    :

    [ ] : t

    : :

    2 1

    1; ;V mtV mt

    Q Qq q l

    W W d d

    .Cv1, Cv2: VLS 1=0,4 ,2=0,1 .

    Theo :

    {

    :

    a = 4,18 :

    v.

    ,

    2 1

    I I 1.

    3.2.2 -

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    - Enthalpy: -

    - :

    -

    - - :

    :

    :

    3.2.3 - 7 mm

    nng ,

    - :

    2 h.4. - :

    - m

    L= 9 m-

    :

    - : 5,592

    3980

    2

    21

    tttk

    (oC)

    - : 585,02

    67,05,0

    2

    21

    k

    - :192,0

    5,595,235

    42,402612exp

    5,235

    42,402612exp

    tph bar

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    10

    - ( ) ( )

    - :

    .- : . -