HP Modular Cooling System Site Preparation Guide

Appendix B

Conversion Factors and Formulas

The conversion factors provided in this appendix are intended to ease data calculation for systems

that do not provide information in the format requested in this Site Preparation Guide. The

following list includes the conversion factors used in this document, as well as additional conversion

factors that might be helpful in determining those factors required for site planning.

Conversion Factors for Refrigeration

• 1 watt = 0.86 kcal/hour

• 1 watt = 3.412 British thermal unit (Btu)/hour

• 1 ton = 200 Btu/minute

• 1 ton = 12,000 Btu/hour

• 1 ton = 3,517.2 W

Metric Equivalents

• 1 centimeter = 0.3937 inch

• 1 meter = 3.28 feet

• 1 meter = 1.09 yards

• 1 inch = 2.54 centimeter

• 1 feet = 0.305 meter

• 1 cubic feet/minute (CFM) = 1.7m3/hour

kVA Conversions

• Three phase kiloVolt-Amps (kVA) = V × A × √3 ⁄1000

• Single phase kVA = V × A⁄1000

Formulas

• kVA = [Voltage x Current (amps)]/1000

• Watts = VA x power factor (PF)

• Btu = Watts x 3.41

HP MCS Site Preparation Guide