20 30 40 50 60 70 80 90 100 110 120 130 140 150

5

10

15

20

25

30

35

40

45

50

55220

210

200

190

180

170

160

150

140

130

120

110

100

90

80

70

60

50

40

30

20

10

0

20°F

25°F

30°F

35°F

40°F

45°F

50°F

55°F

60°F

65°F

75°F

70°F

80°F

85°F

90°F

105 15 2520 30

0.90

1.00

0.80

0.70

0.60

0.50

0.45

0.400.350.300.250.200.150.100.050.00

25

30

35

40

45

50

55

60

65

70

75

80

85

90

80°F WET BULB TEMPERATURE

100°

F D

RY

BU

LB

TE

MP

ER

AT

UR

E

HU

MID

ITY

RA

TIO

(w

) -

gra

ins

of

mo

istu

re p

er p

ou

nd

of

dry

air

ENTH

ALP

Y (h

) - B

TU p

er p

ound

dry

air

60°F

50°F

65°F

75°F

70°F

85°F

90°F

95°F

40°F

30°F

8%

6%

4%

2%

15%

10%

20%

25%

30%

40%

50%

60%

Rel

ativ

e H

umid

ity

70%

80%

90%

Dew

Po

int

Tem

per

atu

re

Sen

sib

le H

eat

Rat

io

SP

EC

IFIC V

OLU

ME

(CU

. FT PE

R LB

. DR

Y A

IR): 15.5

15.0

14.5

14.0

13.5

13.012.5

16.0

ENTHALPY (h) - BTU per pound dry air

DRY BULB TEMPERATURE

EXTENDED RANGE PSYCHROMETRIC CHARTEXTENDED RANGE PSYCHROMETRIC CHART

Technology, Inc.Heat PipeTechnology, Inc.Heat Pipe

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

Vap

or P

ress

ure

- In

ches

of M

ercu

ry

4340 N.E. 49th Ave, Gainesville, Florida 32609Phone:Fax:E-mail:

(352) 367-0999

heatpipe@heatpipe.com(352) 367-1688

http://www.heatpipe.com