Site Preparation Guide, Third Edition - Server Expansion Unit

Appendix A

General Site Preparation Guidelines

Conversion Factors and Formulas

The conversion factors provided in this appendix are intended to ease data calculation for systems that do not

conform specifically to the configurations listed 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

• Refrigeration

— 1 watt = 0.86 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 = 3,517.2 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 = 1.7m3/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