1. What is Tube Side Mass Flowrate?

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.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \dot{m} \) — Mass flow rate (kg/s)
• \( P_p \) — Pumping power (W)
• \( \rho_{fluid} \) — Fluid density (kg/m³)
• \( \Delta P_{Tube Side} \) — Tube side pressure drop (Pa)

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.

3. Importance of Mass Flowrate Calculation

Details: Accurate mass flow rate calculation ensures proper heat transfer, optimal energy usage, and prevents damage to heat exchanger components.

4. Using the Calculator

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.

5. Frequently Asked Questions (FAQ)

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.