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Condensate Flow Rate Formula:
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The condensate flow rate formula calculates the mass flow rate of condensate produced during phase change from vapor to liquid. It is derived from the energy balance equation using latent heat of vaporization.
The calculator uses the condensate flow rate formula:
Where:
Explanation: The formula calculates the mass flow rate of condensate by dividing the total heat transfer rate by the latent heat required for phase change.
Details: Accurate condensate flow rate calculation is crucial for designing heat exchangers, steam systems, refrigeration cycles, and determining equipment sizing for condensate removal systems.
Tips: Enter heat transfer rate in watts (W) and latent heat of vaporization in joules per kilogram (J/kg). Both values must be positive numbers greater than zero.
Q1: What is latent heat of vaporization?
A: Latent heat of vaporization (h_fg) is the amount of energy required to change a substance from liquid to vapor at constant temperature and pressure.
Q2: When is this formula typically used?
A: This formula is commonly used in steam systems, refrigeration cycles, condensation processes in heat exchangers, and any system involving phase change from vapor to liquid.
Q3: What are typical units for condensate flow rate?
A: The standard SI unit is kg/s, but it can also be expressed in kg/h, lb/h, or other mass flow rate units depending on the application.
Q4: Does this formula account for subcooling?
A: No, this basic formula assumes complete condensation without subcooling. For more accurate calculations including subcooling, additional terms would be needed.
Q5: How does pressure affect the calculation?
A: Pressure affects the latent heat of vaporization value. Higher pressures generally result in lower latent heat values, which should be reflected in the h_fg input.