D_BAFFLE_HOLES

This function computes the recommended baffle hole diameter from tube outer diameter and unsupported span based on TEMA guidance. The hole diameter is set slightly above tube outside diameter to allow assembly and tolerance.

The relation is an empirical standard mapping d_b = f(D_o, L_{unsupported}).

Excel Usage

=D_BAFFLE_HOLES(Do, L_unsupported)

• Do (float, required): Tube outer diameter (m).
• L_unsupported (float, required): Unsupported tube length between baffles (m).

Returns (float): Baffle hole diameter (m).

Example 1: Baffle hole for large tube and long span

Inputs:

Do	L_unsupported
0.0508	0.75

Excel formula:

=D_BAFFLE_HOLES(0.0508, 0.75)

Expected output:

0.0516

Example 2: Baffle hole for small tube and short span

Inputs:

Do	L_unsupported
0.01905	0.3

Excel formula:

=D_BAFFLE_HOLES(0.01905, 0.3)

Expected output:

0.01985

Example 3: Baffle hole for small tube and long span

Inputs:

Do	L_unsupported
0.01905	1.5

Excel formula:

=D_BAFFLE_HOLES(0.01905, 1.5)

Expected output:

0.01945

Example 4: Baffle hole for mid size tube

Inputs:

Do	L_unsupported
0.025	0.6

Excel formula:

=D_BAFFLE_HOLES(0.025, 0.6)

Expected output:

0.0258

Python Code

Show Code

from ht.hx import D_baffle_holes as hx_D_baffle_holes

def D_baffle_holes(Do, L_unsupported):
    """
    Calculate baffle hole diameter for tubes using TEMA guidance.

    See: https://ht.readthedocs.io/en/latest/ht.hx.html

    This example function is provided as-is without any representation of accuracy.

    Args:
        Do (float): Tube outer diameter (m).
        L_unsupported (float): Unsupported tube length between baffles (m).

    Returns:
        float: Baffle hole diameter (m).
    """
    try:
        result = hx_D_baffle_holes(Do=Do, L_unsupported=L_unsupported)
        return result
    except Exception as e:
        return f"Error: {str(e)}"

Online Calculator

Do *

Tube outer diameter (m).

L_unsupported *

Unsupported tube length between baffles (m).