How do we calculate?
Flow = capacity ÷ (density × specific heat × ΔT). In glycol water the specific heat falls and viscosity rises, so flow and loss are higher than for water. The size is the smallest within the 250 Pa/m loss and the velocity limits (1.0 m/s up to DN50, 1.5 up to DN150, 2.0 m/s above).
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