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  1. #1
    Nov 2009
    2,403

    !!

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    1-


    1- -- -- -- -- -- -- -- --- - -






    2


    3 50


    10 1 250


    4-


    1-


    2- _30 _20 0 +5


    3 -


    4 - 22 134 502 404


    5-


    6- ( ) 4.5 6 12 324


    0 45 100% 250 22 20








    KW btu\h TON R Kcal\h HP





    4.5 2




    :
    -
    - ( - )
    -


    :

    -

    - -30 + 4 ()

    - -18 10

    -

    -

    -

    -

    - 30

    - ( ) (Shelter)

    - ( Injected polyurethane panels)

    -

    -

    - :
    1 - 15-20
    2- ( 150 )
    3- 10 40/3
    4- 150
    5- 5 - 10
    6- 150
    7- 95%

    - (Access panels)



  2. #2
    Nov 2009
    2,403

    : !!









    -1 - :-

    - - - - - - - .

    - ( )

    2- .



    .

    .

    .

    ( - )

    3- .

    .

    4 - .

    :-

    ( ) .

    ( ) .

    .

    ( )

    .

    5 - .

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    ( ) :-

    .

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    ( )

    5 - .

    :-

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    1 ( ) .

    2 - ( ) .

    * ( ) .

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    :-



    ( 2 ) ( dunham- bush refrigeration engineering manual )

    .

    ( wall heat gain ) :-



    1- ( )



    1- = 2 * ( .. / 24

    2- = 2 * ( .. / 24

    3- = 2 * ( .. / 24

    4- = 2 * ( .. / 24

    5- = 2 * ( .. / 24

    6- = 2 * ( .. / 24

    *





    ( 1 6 ) = -------- .. / 24 --------- ( 1 )

    ( product load ) :-



    1

    2 ( ) .

    3 .

    * =

    ( / 24 ) * ( ) * = ---------- .. / 24 ----------- (2-1)

    * ( ) =

    ( / 24 ) * ( ) * = ---------- .. / 24 ----------- (2-2-1)

    * ( ) =

    ( / 24 ) * ( .. / ) = ------ .. / 24 ----------- (2-2-2)

    * .



    * ( .. / / 24 ) = ------ .. / 24 ------------ ( 2-1-1 )

    ( infiltration air chang load):-





    = 3 * / 24 * .. / 3 = ----------- .. / 24 **

    ( miscellaneous loads ) :-





    -- 2 * / 2 * 3.41 ../ * --- / 24 = ------------ .. / 24



    -- .. / hp / * ---- hp * ---- / 24 = ------------ .. / 24



    ---- * --- .. / * ---- / 24 = ------------ .. / 24







    + ( ) + ( + ) = -------- .. / 24



    + ( ) + ( ) ( + ) = -------- .. / 24

    = 1.1 --- .. / 24

    ** 16 18 .

    = .. / 24 / (16 18 )/ 24 = ------ .. / .









    ( - ) :



    REFRIGERATION__ENGINEERING

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    Design of Room Cooling Facilities:

    Structural & Energy Requirements