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11-10
TABLES & CHARTS
12/18/12
REFERENCE INFORMATION
CONVERSION FACTORS: English to Metric
To Convert
From
2
Area
ft
2
in
Energy
BTU
hp
kW
Length
ft.
in.
Pressure
lbf/ft
2
lbf/in
in. Hg
in H
Temperature
°F
°C
3
Volume
ft
gal(U.S.)
3
ft
TABLE 11-11
Specific heat of Water
Specific heat of Air
Tube-Ice Density
Ice Latent Heat
Water Sensible Heat
Ice Melting Effect (IME)
1 Ton Refrigeration
Atmospheric pressure
Weight of Water
1 gpm water
Weight of air
1 Horsepower
1 Kilowatt
Gravitational accel.
To
2
m
2
m
Joule (J)
BTU/Hr
hp
m.
m.
2
Paschals
(psi)
Paschals
psi
O
psi
2
°C
°F
3
m
3
m
gal(U.S.)
CONSTANTS
1 BTU/(lbm °F)
4.19 kJ/(kg °C)
0.24 BTU/(lbm °F)
32-35 lbs/ft
144 BTU/hr
1 BTU/(lb °F)
12,000 BTU/hr
14.7 psia
62.4 lbs/ft
8.33 lbs/gal
12013 lb/day
0.0749 lbs/ft
0.0100 lbs/gal
2545.6 BTU/hr
1.34 horsepower
2
9.81 m
/sec
TABLE 11-12
P24A & P34A Service Manual
Multiply by
9.2903e-2
6.416 e-4
1054.48
2546.2
1.34
0.3048
0.0254
47.88
6894.76
0.491
0.03612
T
=5/9*(T
- 32)
C
F
T
=(9/5*T
) + 32
F
C
2.8317e-2
3.7854e-3
7.48
3
3
3
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