Handwritten summary notes with examples of chapter 3 in the Thermodynamics - An Engineering Approach Ninth Edition textbook. Includes explanations, annotations, and answered examples from the textbook.
pure substance - A substance that has a fixed chemical
composition throughout
Could be mixture of phases
a as
long as
-
,
everything in the mixture vaporise at the
same temperature
phases :
solid
Liquid
} how A volume with heat
Gas } High Dudeme with heat
[ ideal but NEVER
Can sometimes use
gas equations ,
with liquids or solids or
liquid -
vapour mixtures
Phase
changes of Pure
Liquids :
constant pressure
in °
-
;
→↳
too ? saturation
,;• -•j temperature Kemp of phase changed
→ . - -
. .
- - - - - - - -
-
-
!
•
50
I
>
✓
① Compressed Liquid -
100% liquid
(sub cooled liquid)
② saturated Liquid -
100% liquid
-
About to vaporise
, ③ saturated Liquid - - Both saturated liquid and
vapour of
Vapour Mixture saturation temperature
④ saturated Vapour - 100%
gas
On the of condensation
verge
-
⑤ superheated Vapour - 100%
gas
- Above saturation temperature
pressures :
Changing
-
saturation temperature changes with pressure
P=22MFa
critical point
of 370
i.
-
saturation pressure
- There is
any per saturation temperature
and vice versa .
←
i. .
If we have the set temp .
→ can
get set pressure
.
it For saturated
liquid , mixture $ vapour L② ③ ④) .
.
The amount of Cheat)
Latent Heat -
energy
absorbed
during a
phase change
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