Bundle Diameter for One Tube Pass Triangular Pitch in Heat Exchanger Calculator

Bundle Diameter Formula:

\[ D_{Bundle} = D_{O} \times \left( \frac{N_T}{0.319} \right)^{1/2.142} \]

Bundle Diameter:

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1. What is the Bundle Diameter Formula?

The Bundle Diameter formula calculates the diameter of the tube bundle within a heat exchanger for one tube pass with triangular pitch arrangement. This is essential for proper heat exchanger design and sizing.

2. How Does the Calculator Work?

The calculator uses the Bundle Diameter formula:

\[ D_{Bundle} = D_{O} \times \left( \frac{N_T}{0.319} \right)^{1/2.142} \]

Where:

\( D_{Bundle} \) — Bundle Diameter (m)
\( D_{O} \) — Pipe Outer Diameter in Bundle Diameter (m)
\( N_T \) — Number of Tubes in Bundle Diameter
0.319 — Empirical constant for triangular pitch arrangement
2.142 — Empirical exponent for triangular pitch arrangement

Explanation: The formula provides an empirical relationship to determine the bundle diameter based on tube count and outer diameter for triangular pitch tube arrangements.

3. Importance of Bundle Diameter Calculation

Details: Accurate bundle diameter calculation is crucial for heat exchanger design, ensuring proper tube arrangement, flow distribution, and overall heat transfer efficiency in shell and tube heat exchangers.

4. Using the Calculator

Tips: Enter the pipe outer diameter in meters and the number of tubes in the bundle. Both values must be positive numbers (diameter > 0, tube count ≥ 1).

5. Frequently Asked Questions (FAQ)

Q1: What is triangular pitch arrangement?
A: Triangular pitch is a tube arrangement where tubes are positioned at the vertices of equilateral triangles, providing compact arrangement and good heat transfer characteristics.

Q2: When is this formula applicable?
A: This formula is specifically for one tube pass heat exchangers with triangular pitch tube arrangement.

Q3: What are typical values for pipe outer diameter?
A: Typical pipe outer diameters range from 0.015m to 0.05m (15mm to 50mm) for most heat exchanger applications.

Q4: How does tube count affect bundle diameter?
A: Bundle diameter increases with increasing tube count, but the relationship is non-linear due to the exponential term in the formula.

Q5: Are there different formulas for different pitch arrangements?
A: Yes, different empirical constants and exponents are used for square pitch, rotated square pitch, and other tube arrangement patterns.