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Appendix C
Conversion Factors and Formulas
Conversion Factors
62
Conversion Factors
Refrigeration
1 watt = kcal/h
1 watt = 3.412 Btu/h
1 watt = 2.843 x 10
-4
tons
1 ton = 200 Btu/min
1 ton = 12,000 Btu/h
1 ton = 3,517.2 W
Metric Equivalents
1 centimeter = 0.3937 in
1 meter = 3.28 ft
1 meter = 1.09 yds
1 in. = 2.54 cm
1 ft = 0.305 m
1 CFM = 1.7m
3
/h
KVA Conversion
Three Phase
Equation C-1
Single Phase
Equation C-2
Formulas
KVA = Voltage x Current (amps)
Watts = VA x PF
BTU = Watts x 3.41
KVA V A 3()1000××=
KVA V A 1000×=