2010
621.565(07)
343
: . . , . .. ,
: - . , . ..
, 2010 .
1. , , .
2. -56 .
3. .
4. , .
1.
. . , , .
, , , D u = 0, :
q = q 1 q 2 = l, (1.1)
q 1 , ; q 2 , ; l .
(1.1) ,
q 1 = q 2 + l, (1.2)
a q 2, ,
(1.3)
(. 1.1),
. 1.1.
, t 2 = const :
q 2 = T 2 (s 1 s 4) = T 2 Ds (1.4)
, t 1 = const :
q 1 = T 1 (s 2 s 3) = T 1 Ds, (1.5)
: 1-2 , 2 ; 2-3 q 1 ; 3-4 ; 4-1 q 2 . (1.4) (1.5) (1.3) :
(1.6)
|
|
e, l q 2 .
, , t 0 £ 0 oC, p 0 , . . r v, .
NH3 ( t = 20 , p = 8,57 t 0 = -34 , p 0 = 0,98 ). , , , . (3CL) (2H6); (SO2) - .
( ). , , t < 200 . R12, 12 (CF2CL2 ), : m = 120,92; p 0 = 1 ; t 0 = -30,3 oC; R12: p = 41,32 ; t = 111,8 ; v = 1,78×10-3 3/; k = 1,14.
12, , 2000 [1], R12 .