H_BOILING_YAN_LIN

This function predicts the boiling heat transfer coefficient in plate heat exchangers with the Yan-Lin correlation. It combines equivalent two-phase flow scaling, boiling number effects, and fluid thermophysical properties.

The implemented relationship is of the form:

h = f\left(Re_{eq}, Bo_{eq}, Re, Pr_l\right)\frac{k_l}{D_h}

where the required flow and property inputs are used to compute h in W/m^2/K.

Excel Usage

=H_BOILING_YAN_LIN(m, x, Dh, rhol, rhog, mul, kl, Hvap, Cpl, q, A_channel_flow)

m (float, required): Mass flow rate (kg/s).
x (float, required): Quality at the specific point (-).
Dh (float, required): Hydraulic diameter of the plate (m).
rhol (float, required): Density of the liquid (kg/m^3).
rhog (float, required): Density of the gas (kg/m^3).
mul (float, required): Viscosity of the liquid (Pa*s).
kl (float, required): Thermal conductivity of liquid (W/m/K).
Hvap (float, required): Heat of vaporization (J/kg).
Cpl (float, required): Heat capacity of liquid (J/kg/K).
q (float, required): Heat flux (W/m^2).
A_channel_flow (float, required): Channel flow area (m^2).

Returns (float): Boiling heat transfer coefficient (W/m^2/K).

Example 1: Yan Lin correlation example case

Inputs:

m	x	Dh	rhol	rhog	mul	kl	Hvap	Cpl	q	A_channel_flow
0.00003	0.4	0.002	567	18.09	0.000156	0.086	900000	2200	100000	0.0003

Excel formula:

=H_BOILING_YAN_LIN(0.00003, 0.4, 0.002, 567, 18.09, 0.000156, 0.086, 900000, 2200, 100000, 0.0003)

Expected output:

318.723

Example 2: Yan Lin correlation at low quality

Inputs:

m	x	Dh	rhol	rhog	mul	kl	Hvap	Cpl	q	A_channel_flow
0.00004	0.25	0.0018	600	16	0.00018	0.09	850000	2300	90000	0.00028

Excel formula:

=H_BOILING_YAN_LIN(0.00004, 0.25, 0.0018, 600, 16, 0.00018, 0.09, 850000, 2300, 90000, 0.00028)

Expected output:

311.639

Example 3: Yan Lin correlation at higher heat flux

Inputs:

m	x	Dh	rhol	rhog	mul	kl	Hvap	Cpl	q	A_channel_flow
0.00005	0.55	0.0022	520	20	0.00014	0.08	950000	2100	140000	0.00032

Excel formula:

=H_BOILING_YAN_LIN(0.00005, 0.55, 0.0022, 520, 20, 0.00014, 0.08, 950000, 2100, 140000, 0.00032)

Expected output:

380.111

Example 4: Yan Lin correlation at mid heat flux

Inputs:

m	x	Dh	rhol	rhog	mul	kl	Hvap	Cpl	q	A_channel_flow
0.000025	0.35	0.0019	580	12	0.00017	0.085	870000	2250	95000	0.00029

Excel formula:

=H_BOILING_YAN_LIN(0.000025, 0.35, 0.0019, 580, 12, 0.00017, 0.085, 870000, 2250, 95000, 0.00029)

Expected output:

329.678

Python Code

Show Code

from ht.boiling_plate import h_boiling_Yan_Lin as ht_h_boiling_Yan_Lin

def h_boiling_Yan_Lin(m, x, Dh, rhol, rhog, mul, kl, Hvap, Cpl, q, A_channel_flow):
    """
    Calculate boiling heat transfer coefficient using Yan Lin correlation.

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

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

    Args:
        m (float): Mass flow rate (kg/s).
        x (float): Quality at the specific point (-).
        Dh (float): Hydraulic diameter of the plate (m).
        rhol (float): Density of the liquid (kg/m^3).
        rhog (float): Density of the gas (kg/m^3).
        mul (float): Viscosity of the liquid (Pa*s).
        kl (float): Thermal conductivity of liquid (W/m/K).
        Hvap (float): Heat of vaporization (J/kg).
        Cpl (float): Heat capacity of liquid (J/kg/K).
        q (float): Heat flux (W/m^2).
        A_channel_flow (float): Channel flow area (m^2).

    Returns:
        float: Boiling heat transfer coefficient (W/m^2/K).
    """
    try:
        result = ht_h_boiling_Yan_Lin(m, x, Dh, rhol, rhog, mul, kl, Hvap, Cpl, q, A_channel_flow)
        return result
    except Exception as e:
        return f"Error: {str(e)}"

Online Calculator

m *

Mass flow rate (kg/s).

x *

Quality at the specific point (-).

Dh *

Hydraulic diameter of the plate (m).

rhol *

Density of the liquid (kg/m^3).

rhog *

Density of the gas (kg/m^3).

mul *

Viscosity of the liquid (Pa*s).

kl *

Thermal conductivity of liquid (W/m/K).

Hvap *

Heat of vaporization (J/kg).

Cpl *

Heat capacity of liquid (J/kg/K).

q *

Heat flux (W/m^2).

A_channel_flow *

Channel flow area (m^2).