Mass Flowrate Formula:
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Definition: This calculator determines the mass flow rate of fluid through the tube side of a heat exchanger based on pumping power, fluid density, and pressure drop.
Purpose: It helps engineers and technicians optimize heat exchanger performance by calculating the mass flow rate needed for given operating conditions.
The calculator uses the formula:
Where:
Explanation: The formula relates the energy required to pump the fluid (pumping power) to the mass flow rate, considering the fluid's density and the pressure loss in the system.
Details: Accurate mass flow rate calculation ensures proper heat transfer, optimal energy usage, and prevents damage to heat exchanger components.
Tips: Enter the pumping power in watts, fluid density (default 995 kg/m³ for water at 25°C), and tube side pressure drop in pascals. All values must be > 0.
Q1: What is typical pumping power for heat exchangers?
A: Pumping power varies widely but typically ranges from hundreds to thousands of watts depending on system size and flow requirements.
Q2: How do I determine fluid density?
A: Use standard values (e.g., 995 kg/m³ for water at 25°C) or consult fluid property tables for other temperatures or fluids.
Q3: What affects tube side pressure drop?
A: Factors include tube diameter, length, fluid velocity, viscosity, and tube surface roughness.
Q4: Can this be used for gases?
A: Yes, but ensure correct density values for gases which are highly pressure- and temperature-dependent.
Q5: How accurate is this calculation?
A: It provides a theoretical value; actual flow rates may vary due to system inefficiencies and other factors.