Unit conversion
The following factors can be used to convert from imperial to the most common SI Metric values.
Table 21: SI metric conversion
Measurement
Multiply imperial unit
By factor
To obtain metric unit
Capacity
Tons refrigerant effect (ton)
3.516
Kilowatts (kW)
Power
Horsepower (hp)
0.7457
Kilowatts (kW)
Flow rate
Gallons / minute (gpm)
0.0631
Liters / second (L/s)
Feet (ft)
0.3048
Meters (m)
Length
Inches (in.)
25.4
Millimeters (mm)
Weight
Pounds (lb)
0.4536
Kilograms (kg)
Velocity
Feet / second (fps)
0.3048
Meters / second (m/s)
Feet of water (ft)
2.989
Kilopascals (kPa)
Pressure drop
Pounds / square inch (psi)
6.895
Kilopascals (kPa)
Temperature
To convert degrees Fahrenheit (°F) to degrees Celsius (°C), subtract 32° and multiply by 5/9 or
0.5556.
Example: (45.0°F - 32°) x 0.5556 = 7.22°C
To convert a temperature range (that is, a range of 10°F) from Fahrenheit to Celsius, multiply by 5/9
or 0.5556.
Example: 10.0°F range x 0.5556 = 5.6 °C range
53
YVAM Air-Cooled Centrifugal Liquid Chiller
