Vogt TUBE-ICE 03TA, Service Manual, Page: 118 / 122

03TA Service Manual
TABLES & CHARTS
4/10/14
11-6
REFERENCE INFORMATION
CONVERSION FACTORS: English to Metric
To Convert From To Multiply by
Area ft
2
m
2
9.2903e-2
in
2
m
2
6.416 e-4
Energy BTU Joule (J) 1054.48
Hp BTU/Hr 2546.2
KW Hp 1.34
Length ft. m. 0.3048
in. m. 0.0254
Pressure Lbf/ft
2
Pa 47.88
Lbf/in
2
(psi) Pa 6894.76
In. Hg psi 0.491
In H
2
O psi 0.03612
Temperature
° F ° C
T
C
=5/9*(T
F
- 32)
° C ° F
T
F
=(9/5*T
C
) + 32
Volume Ft3 m
3
2.8317e-2
Gal(U.S.) m
3
3.7854e-3
Ft3 Gal(U.S.) 7.48
TABLE 11-7
CONSTANTS
Specific heat of Water
1 BTU/(lbm ° F)
Specific heat of Air
4.19 kJ/(kg ° C)
0.24 BTU/(lbm ° F)
Tube-Ice Density 32-35 lbs/ft
3
Ice Latent Heat 144 BTU/hr
Water Sensible Heat
1 BTU/(lb ° F)
Ice Melting Effect (IME)
1 Ton Refrigeration 12,000 BTU/hr
Atmospheric pressure 14.7 psia
Weight of Water 62.4 lbs/ft
3
8.33 lbs/gal
1 gpm water 12013 lb/day
Weight of air 0.0749 lbs/ft
3
0.0100 lbs/gal
1 Horsepower 2545.6 BTU/hr
1 Kilowatt 1.34 horsepower
Gravitational acceleration 9.81 m
2
/sec
TABLE 11-8