Conversion Factors and Formulas

The conversion factors provided here are intended to ease data calculation for systems that do not conform specifically to the configurations listed in this Site Preparation Guide. Listed below are the conversion factors used in this document, as well as additional conversion factors which may be helpful in determining those factors required for site planning.

Conversion Factors

• Refrigeration

  • 1 watt =.86 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 = 3,517.2W

• Metric Equivalents

  • 1 centimeter = 0.3937 in.

  • 1 meter = 3.28 ft

  • 1 meter = 1.09 yds

  • 1 in. = 2.54 cm

  • 1 ft = 0.305m

  • 1 CFM = 1.7 m3/h

• kVA Conversions

  Three phase

  kVA = V × A × √3 / 1000

• Single phase

  kVA = V × A / 1000

Formulas

• kVA = Voltage x Current (amps)

• Watts = VA x PF

• BTU = Watts x 3.41