Closed Expansion Tanks - Volume vs. Temperature and Pressure
Sizing of low temperature closed expansion tanks.
Temperatures in degrees Fahrenheit and pressure in psig
- initial temperature 50 oF
- initial pressure 10 psig
- maximum operating pressure 30 psig
- safety factor aprox. 2
The diagram below can be used to estimate the size of a closed expansion tank at low temperature.
For initial and maximum pressures different from above - multiply the tank size with the a correction factor estimated from the diagram below:
Temperatures in degrees Celsius and pressure in kPa
- initial temperature 10 oC
- initial pressure 70 kPa
- maximum operating pressure 200 kPa
The diagram below can be used to estimate the size of a closed expansion tank at low temperatures.
For initial and maximum pressures different from above - multiply the tank size with the a correction factor estimated from the diagram below:
