Refrigeration & Air Conditioning Technology, 8e - 69

69

Unit 3 Refrigeration and Refrigerants

CRITICAL
POINT

SATURATED
LIQUID LINE

SUBCOOLED
LIQUID
REGION
SATURATED
REGION
(PHASECHANGE
REGION)

SATURATED
VAPOR LINE

1208F
808F
608F
08F
-208F

0% VAPOR
10%
20%
30%
LIQUID

SUPERHEATED
VAPOR
REGION

SUBCOOLED-SATURATED-SUPERHEATED
REGIONS

ENTHALPY (Btu/lb)

1208F
808F

PERCENTAGE
CONSTANT
QUALITY LINES
100% VAPOR
80% VAPOR
90% VAPOR

608F
08F
-208F
1208F
808F
608F
08F
-208F

LINES OF CONSTANT TEMP.
(ISOTHERMS)

LINES OF CONSTANT QUALITY
(%VAPOR)

-20 0 20 40 60 80 100
.13
.1
4

PRESSURE (PSIA)

Figure 3.47 Skeletal pressure/enthalpy diagrams.

5
.1 6
.1 7
.1 8
.1 9
.1 0
.2 1
.2

-20 0 20 40 60 80 100
LINES OF CONSTANT ENTHALPY

LINES OF CONSTANT ENTROPY
(Btu/lb/8R)
.019

.021
.025
.070
.140
.300
1.40
2.00

500 PSIA

500 PSIA

200 PSIA

200 PSIA

20 PSIA

20 PSIA

5.00
10.00
1.0 PSIA

LINES OF CONSTANT SPECIFIC VOLUME
ft3
lb

( )

1.0 PSIA

LINES OF CONSTANT PRESSURE
(ISOBARS)



Refrigeration & Air Conditioning Technology, 8e

Table of Contents for the Digital Edition of Refrigeration & Air Conditioning Technology, 8e

Contents
Refrigeration & Air Conditioning Technology, 8e - Cover1
Refrigeration & Air Conditioning Technology, 8e - Cover2
Refrigeration & Air Conditioning Technology, 8e - i
Refrigeration & Air Conditioning Technology, 8e - ii
Refrigeration & Air Conditioning Technology, 8e - iii
Refrigeration & Air Conditioning Technology, 8e - Contents
Refrigeration & Air Conditioning Technology, 8e - v
Refrigeration & Air Conditioning Technology, 8e - vi
Refrigeration & Air Conditioning Technology, 8e - vii
Refrigeration & Air Conditioning Technology, 8e - viii
Refrigeration & Air Conditioning Technology, 8e - ix
Refrigeration & Air Conditioning Technology, 8e - x
Refrigeration & Air Conditioning Technology, 8e - xi
Refrigeration & Air Conditioning Technology, 8e - xii
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Refrigeration & Air Conditioning Technology, 8e - xix
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Refrigeration & Air Conditioning Technology, 8e - xxi
Refrigeration & Air Conditioning Technology, 8e - xxii
Refrigeration & Air Conditioning Technology, 8e - xxiii
Refrigeration & Air Conditioning Technology, 8e - xxiv
Refrigeration & Air Conditioning Technology, 8e - 1
Refrigeration & Air Conditioning Technology, 8e - 2
Refrigeration & Air Conditioning Technology, 8e - 3
Refrigeration & Air Conditioning Technology, 8e - 4
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Refrigeration & Air Conditioning Technology, 8e - Cover4
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