Calculate HTF properties, flow rate, and heat transfer for solar thermal collector loops.
Input Parameters
Results
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Flow Rate
kg/s
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Volume Flow
L/min
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Pump Power
kW
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Reynolds Number
Note: Therminol VP-1 is used up to 400°C. Propylene glycol for freeze protection below 100°C. Pressurized water is cheapest but limited to ~200°C.
Reference
Mass Flow = Heat Load / (Cp x ΔT) [kg/s]
Volume Flow = Mass Flow / Density x 60000 [L/min]
Reynolds = ρ x v x D / μ
Pump Power = ΔP x Vol Flow / Pump Eff
Therminol VP-1: Cp=2.1 kJ/kgK, Water: 4.2 kJ/kgK