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  1. #1

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    (sime 25) ' : "http://anaktisis.com.gr/site/index.php?option=com_content&view=article&id=91&Itemid=123&lang=en"
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  2. #2
    konv, site , 55 .

    site .
    ) "" .
    ) ( ).

    ) , 55-60 , 55 . . , .. ( , , ), [u]. . 50 . .
    34KW , 2m3/h.
    182. 900mm - = 1,6m. 18 , 2,2m/s.
    Reynolds 70.000.
    Nu=290
    Q1=Nu*T1***0,018(, 1,6m, .. ASHRAE..)= 10,55*1 Watt*C.
    Q2=m*Cp*2=2*4174*2/3600= 2,32*2 Watt*C

    1= T - ((inlet+Toutlet)/2)

    2 = Toutlet - inlet

    , , , 55 .

    excel goal seek, Q1 & Q2, . , . . .

    ) ..

    10 18. 1,6m ?

    6,7/..
    400 /. 18 = 0,44m/s.
    Re=7.000, ... .. ..
    17 0,49m/s, Re= 7500.. ..
    Re=10.000/7500=33%, 1,33*0,49m/s=0,65m/s, 9 /..


    Nu=0,023*Re^0,8*Pr^0,4 = 0,023*(10000^0.8)*(7,88^0,4)= 83

    31W/m2K.. , ..

    Q1=31**d*L*1= 2,65*1 Watt*C
    Q2=m*Cp*2=0.4*4186*2/3600= 0,465*2 Watt*C


    1=2=31 C Q1=Q2

    , , 31 41 , .
    31/35= 89% .
    ..
    540 * 31 * 1,16 = 19KWh....

    34KW 90%, 34 - 34*0.9= 3,4KWh..

    , 540 3,4KWh, = 5,42 .. 10 , 15,42 .

    ..
    1) / . 34kW?
    2) ?
    3) ? 150 ?

    125, fins ..


  3. #3
    . Mechtron .

    .... ...
    ....
    .
    ( ) 34Kw 20 1450 .
    40 .






    : 19/10/2007
    .. ,
    CHAPPEE KLIMATIKA -


    , , -, -, :
    - ;
    - 100%;
    - ;

    ;
    , .
    ! (latent heat) ( , ), . , 1ml , ( -> -> ):
    , 100C . , ...
    , , , .
    : (CH4) (, , ..). T 99%, , . :
    CH4 + 2O2 -> CO2 + 2H2O +
    , (2) 75%, .
    :
    CH4 + 2O2 + 7,52 N2 -> CO2 + 2H2O + 7,52 N2 +
    , 10m ( 9,52) 2m 1m .
    : N2(), H2O(), CO2( ), , : CO ( ) NOx ( ), .


    ܻ :
    : H = 1 C = 12 O = 16
    : CH4 + 2O2 = CO2 + 2(H2O)
    : 16 64 44 36
    , 16 Kg , 36 kg ( 44 kg , ).
    0,72 kg/m.
    , , 1m (0,72Kg) , : 0,72 x 36/16 = 1,62kg ( 1,62lt ).
    . , ( ) 140C 60C (=80C).
    : 1Kcal C, 80C 80Kcal.
    : ( ), 2256,3J/ml * 1000ml/lt = 2256 KJ = 540 Kcal.
    m , , :
    ) 1,62(lt H2O) x 80(Kcal) = 130 Kcal( ).
    ) 1,62(lt H2O) x 540 (Kcal) = 902 Kcal( ).
    : 1.032 Kcal ( ) m !

    100%;
    , , :
    : H [kcal] 1 kg 1 m .
    ( 8.130Kcal/m):
    , .
    : , - .

    , , . , 90%, 1m , (8.130 * 0.9)= 7.317Kcal.
    O , 95%, 1m (8.130 * 0.95) = 7.723cal + 1.032Kcal ( ) = 8.755Kcal.
    : 8.755 / 8.130 = 1.08 108%
    ܅

    http://udravlikos.gr

  4. #4
    . Gregori, . ..

  5. #5
    . 15%, !!!!
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  6. #6


    konv "" ..
    ..

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    ) . ( )
    ) , . ( )
    ) ( )
    ) , . KW .

    , .

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