HP Integrity rx5670, Site Preparation Manual

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General Site Preparation Guidelines
Conversion Factors and Formulas
Chapter 2
31
Conversion Factors and Formulas
The conversion factors provided in this section 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 = 1.7m3/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