1. What is Number of Tubes in Six Pass Square Pitch given Bundle Diameter?

Definition: This calculator estimates the number of tubes that can fit in a heat exchanger bundle with six-pass square pitch configuration based on the bundle diameter and pipe outer diameter.

Purpose: It helps heat exchanger designers determine the optimal tube count for a given bundle configuration.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( N_{Tubes} \) — Number of tubes in the heat exchanger
• \( D_B \) — Bundle diameter (meters)
• \( D_{Outer} \) — Pipe outer diameter (meters)

Explanation: The formula is an empirical relationship that accounts for the geometric packing of tubes in a six-pass square pitch configuration.

3. Importance of Tube Count Calculation

Details: Proper tube count estimation ensures optimal heat transfer performance, proper fluid flow distribution, and mechanical integrity of the heat exchanger.

4. Using the Calculator

Tips: Enter the bundle diameter and pipe outer diameter in meters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is six-pass square pitch configuration?
A: It's a tube arrangement where tubes are laid out in a square pattern with the fluid making six passes through the heat exchanger.

Q2: How accurate is this formula?
A: This is an empirical formula that provides a good estimate but actual tube counts may vary based on specific design constraints.

Q3: What's the typical range for bundle diameters?
A: Bundle diameters typically range from 0.1 m to 3 m, depending on heat exchanger size and capacity.

Q4: Can this be used for triangular pitch configurations?
A: No, this formula is specifically for six-pass square pitch configurations.

Q5: How do I determine the bundle diameter?
A: Bundle diameter is typically determined by the heat exchanger shell size minus necessary clearances.