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T-S Chart

The document is a psychrometric chart that shows temperature, humidity, enthalpy and other properties of air at sea level atmospheric pressure. The chart contains many data points and lines displaying the relationships between dry bulb temperature, humidity ratio, enthalpy and other psychrometric properties of air.

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Phanhai Kaka
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166 views1 page

T-S Chart

The document is a psychrometric chart that shows temperature, humidity, enthalpy and other properties of air at sea level atmospheric pressure. The chart contains many data points and lines displaying the relationships between dry bulb temperature, humidity ratio, enthalpy and other psychrometric properties of air.

Uploaded by

Phanhai Kaka
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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cen2932x_ch18-ap01_p907-956.

qxd

ASHRAE Psychrometric Chart No. 1


Normal Temperature
Barometric Pressure: 101.325 kPa
1992 American Society of Heating,
Refrigerating and Air-Conditioning Engineers, Inc.

0.36
30

Sea Level

olu

me

er

25

cub

ilo

ic m

sp

3
0.

0.2

jo

lb t

em

re

%
%
70

tu
ra
ra
tu

20

Sa

40

%
60

8
0.8

tio

te

pe

20

ir

50

ry a

re

atu

%
50

20
0.55
100
18
0.60
16

0.75

6
0.8

15

0.85
10

0.95
1.0

70
6

20%

5
2
0.8

umidit

lative h

0
0.8

10% re

60

8
0.7

10

20

30

40

Dry bulb temperature C


Prepared by Center for Applied Thermodynamic Studies, University of Idaho.

FIGURE A31
Psychrometric chart at 1 atm total pressure.
Reprinted by permission of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, GA; used with permission.

50

953
APPENDIX 1

0.90

4
0.8

10

30%

10
20

0.80

12
80

40

0.70

14

15
30

0.65
90

Page 953

80

per

md

En

t bu

gra

th

we

kilo

60

0
0.9

(h

90

)k

p
al

25

per

ilo

eter

e
ul

0.50

10:05 AM

am
70

gr

Enthalpy
h
=
Humidity ratio


110
22

HS
Sensible heat

=
Total heat
HT

ai

2v

ry

12/18/09

0.9

80
r

2.0

2.5

3.0

0.45
24

.5

0.2

120

30

4.0

26
90

0.40

28

Humidity ratio () grams moisture per kilogram dry air

0.4

5.0

30

1.0
1.5
5.0
2.0
4.0
2.0
HS

Sensible heat

=
4.0
0.0
Total heat
HT 2.0
1.0
1.0

0.1

10.0

1.0
0.8
0.7
0.6
0.5

4
0.9

100

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