Schimbator de caldura
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Transcript of Schimbator de caldura
-
- . -07 .. :
.. 2011
3
41.
4
42.
53.
64.
65. .
65.1.
6( )
75.2. ( )
86. .
107.
108.
108.1. ( )
118.2. ( )
118.3. ()
129.
13
14
. , , , , , , , -.
, , . , . , .
11-3502 2-25 . 20 25 2-6 . .
, . , . .
. .
. , . , , , . , , , . . , , , . . -, -, - , . 1000 2.
1.
(.. ), ( ). ( , , , F, ).2.
Q
-
-
- ( )
- ( . LV [1] =110,8 0)
- ( . XI [1] )
- , 0
- , 0 :
G
Q ,
- ( . XI [1] )
- ( 350)
- ( 150)
:
:
3. F:
= 300 ( . 4.8[1] )
F:
= 300
:
Re > 15000 d = 25x2
w :
/,
d = 25 2(2 = 21
= 0,89 ( (t = (t2 + t2)/2 = 25 ( . VI [1]) = 997 /3 (t = (t2 + t2)/2 = 25 ( . XXXIX [1])
:
V = G/ = 16,62/997 = 0,0166 3/ 25x2 , V = 0,0166 3/ Re = 15000:
Re = 15000, n/z - d = 252 :
4.
4.12 [1] n/z - D = 600 , 252 , z = 4 n = 206:
15121-79 -: F = 32 2
( )
d = 25x2
D =
s. = 0,018 2 n = 206 ( )5. . 5.1.
( ) :
G , /
-
-
- ()
- ( . VI [1] : 26,40 )
:
- ( . XXXIX [1] : 26,40 )
:
:
(),
5.2. ( )
- ( )
,
- ( . XLIV[1] = 870 ) ()
- ( . X [1] : 110,80 )
- ( . V [1] 110,80 )
:
- ( . XXXI[1])
- ( . XXXI [1] )
- ,
- ( . XXVIII [1] )
:
6. . 6.1. ( )
:
G , / -
-
- ()
- ( . VI [1] : 16,370 )
:
- ( . XXXIX [1] : 16,370 )
:
:
(),
6.2. ()
:
- ()
()
- ( . 4.12 [1] )
- ( . V [1] 800 )
:
- ,
- ( . [1] : 800 )
:
:
(),
:
- ( . XXXI [1] )
- ( . XXXI [1])
- ,
- ( . XXVIII [1] )
:
7.
:
8. 8.1. ( ) :
- , / - ,
- ( . XXXIX [1]
EMBED Equation.3 )
-
-
:
- , :
- ( . 2.6 [2] ) :
8.2. ( ) , :
: ( . 2.7 [2] ) :
- ( . 2.6 [2] )
- ( )
:
:
8.3. ()
:
- ( . 2.6 [2] )
- ( . IX [1] )
:
:
9. 9.1.
8
D - , p ,
- , /2 () - , - , ( =1, .. , ) ,
, 9.2.
R , ( R=D H=0.25D)
, .. ,
8
15121-79 -
:
25*2
( ):
( ):
1. . .. , .. , .. : .: , 2004. 576 .2. . . . .. , 3- ., . .: , 2007 496.3. .. . : . .:. . -, 1981. 382 ., .4. .. . :
.-10- ., , . .1973.- : , 2004.-753.;
EMBED Equation.3
EMBED Equation.3
I
Q
Q
t2
110,80
110,80
350
17,750
110,80
800
17,750
150
II
EMBED Equation.3
t2x
t1
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