Psychrometric chart (I-P Units) (pdf)

55

60

210 90

50

200

190 85

85

15.0

BAROMETRIC PRESSURE 29.921 inches of Mercury

180

45

170

W

1.1

BU

80

RA

TU

OF

DR

RE

- °F

ND

RE PE RA TU

130

% 25

NT

AL

120

75

EM

PY

-B TU

PE RP OU

75

14.5

70

TIO

TH

140

SA

TU

RA

110

100

70 65

90

25

60

55

50

-5

0

5

10

20

4%

20%

LATIVE

15

20

25

30

35

40

45

50

55

60

65

ITY

HUMID

70

10

2%

75

80

85

50

.5

55

45

.3

40

6%

10% RE

60

DEW POINT - °F

13.0

5

0

20

15

.6

8%

12.0

-10

10

65

45

%

12.5

15 10

.7

55

40

30

30 25

70

.4

30

35

25 20 5

%

40

.8

50

40

30

-5

45

35

5

%

50

.9 75

50

Y AIR

40

13.5

45

10

60

60

F DR ³/lb O

60

50

%

70 %

ME ft VOLU

15

70

15 %

% 80

IFIC

55

80

SPEC

90 %

65

14.0

60 20

1

150

-°

F

80

30

EN

80

PE

HUMIDITY RATIO - GRAINS OF MOISTURE PER POUND OF DRY AIR

YA IR

160

TE

M

40

90

95

100

105

110

115

120

125

35

.2

30 40

25 20

.1

10 0 -20

130

DRY BULB TEMPERATURE - °F

Linric Company Psychrometric Chart, www.linric.com 10

15

20

25

30

35

ENTHALPY - BTU PER POUND OF DRY AIR

LB

VAPOR PRESSURE - INCHES OF MERCURY

ET

35

1.2 65

85

0

1.3

15.5

PSYCHROMETRIC CHART

0

70