Expansion Tank
Calculation for
Chilled Water
Primary &
Secondary Network
For District Cooling
Network
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Prepared by
Engineer/Mostafa Al
Wakeel
For Closed Water Tank with Air/Water Interface
Where:
Vs = 1.15 x (water in secondary piping + water in primary piping)
As 15% for water in fittings
After Calculating of pipes volume and determine the water in
All pipes and fittings
Vs = 261300 Gallon
Specific Volume at T1
Specific Volume at T2
Assume Factor of safety 10% Then
Vt = 20187.2 Gallon
We can use 5 Tanks Then each tank = 20187.2/5 = 4037.44
Gallon
Then each tank will be 4038 Gallon == 15285 Liters.
You can apply the same method of any closed system.
End