6
. E n tro p iy a o 'z g a rish i:
As = — =
K in— kj/kg.
T
Dl
T
(
6 3
)
14-§. A d ia b a tik jarayon
1.
T iz im g a issiqlik k e ltirilm a y d i v a u n d a n issiqlik o lin m ay -
di, b in o b a rin d q =
0
, s h u n in g u c h u n e n tro p iy a o 'z g a rm a y qoladi,
S=const.
К о 'rib tu rib m iz k i, b u ja ra y o n d a
P
h am ,
v
h am , T h a m o 'z g a -
rad i. B ular o ra sid a g i b o g 'la n is h n i to p ish u c h u n te rm o d in a m ik a -
n in g b irin c h i q o n u n in i yozam iz:
k
- a d ia b a tik k o 'rsa tk ic h d eb belgilab, (
6 6
) ifo d a n i integ ral-
laym iz:
b u ifo d a a d ia b a tik ja ra y o n n in g te n g la m a si d ey ilad i. P a ra m e trla r
o ra s id a g i b o g 'lan ish .
2. B osim va h ajm o ra sid a g i b o g 'lan ish :
dc] = cpdT - v d P
dq = cvdT + Pdv
(64)
(65)
(64) n i (65) ga b o'lam iz:
(
Dostları ilə paylaş: