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Expansion Tank Calculator

Calculate closed and open expansion tank capacity from piping system expansion volume — free HVAC design tool

Related Categories:Building Services
Input Conditions
Results
Expansion Coeff. (Min Temp)0.00027
Expansion Coeff. (Max Temp)0.02899
Expansion Rate2.87 %
Expansion Volume (Ve)14.4 L
FormulaVe / (1 - P_fill/P_max) = 14.4 / 0.498
Required Tank Capacity28.8 L
Recommended Tank Size
30 L
Standard Size
Water Expansion Coefficient Table
Temp (°C)Coeff.
40.00000
100.00027
200.00177
300.00435
400.00782
500.01207
600.01705
700.02270
800.02899
900.03590
1000.04343