H_BOIL_HANLEEKIM

This function computes the two-phase boiling heat transfer coefficient in a plate heat exchanger using the Han-Lee-Kim correlation. It accounts for fluid properties, heat flux, corrugation geometry, and equivalent two-phase flow effects.

The model can be summarized as a correlation of the form:

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

where Re_{eq} and Bo_{eq} are equivalent two-phase Reynolds and boiling numbers, and the output is h in W/m^2/K.

Excel Usage

=H_BOIL_HANLEEKIM(m, x, Dh, rhol, rhog, mul, kl, Hvap, Cpl, q, A_channel_flow, wavelength, chevron_angle)
  • 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).
  • wavelength (float, required): Corrugation wavelength (m).
  • chevron_angle (float, optional, default: 45): Chevron angle of corrugations (degrees).

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

Example 1: Han Lee Kim correlation example case

Inputs:

m x Dh rhol rhog mul kl Hvap Cpl q A_channel_flow wavelength chevron_angle
0.00003 0.4 0.002 567 18.09 0.000156 0.086 900000 2200 100000 0.0003 0.0037 45

Excel formula:

=H_BOIL_HANLEEKIM(0.00003, 0.4, 0.002, 567, 18.09, 0.000156, 0.086, 900000, 2200, 100000, 0.0003, 0.0037, 45)

Expected output:

675.732

Example 2: Han Lee Kim correlation at low quality

Inputs:

m x Dh rhol rhog mul kl Hvap Cpl q A_channel_flow wavelength
0.00004 0.25 0.0018 600 16 0.00018 0.09 850000 2300 90000 0.00028 0.0034

Excel formula:

=H_BOIL_HANLEEKIM(0.00004, 0.25, 0.0018, 600, 16, 0.00018, 0.09, 850000, 2300, 90000, 0.00028, 0.0034)

Expected output:

733.472

Example 3: Han Lee Kim correlation at higher heat flux

Inputs:

m x Dh rhol rhog mul kl Hvap Cpl q A_channel_flow wavelength chevron_angle
0.00005 0.55 0.0022 520 20 0.00014 0.08 950000 2100 140000 0.00032 0.0042 60

Excel formula:

=H_BOIL_HANLEEKIM(0.00005, 0.55, 0.0022, 520, 20, 0.00014, 0.08, 950000, 2100, 140000, 0.00032, 0.0042, 60)

Expected output:

459.933

Example 4: Han Lee Kim correlation at mid heat flux

Inputs:

m x Dh rhol rhog mul kl Hvap Cpl q A_channel_flow wavelength chevron_angle
0.000025 0.35 0.0019 580 12 0.00017 0.085 870000 2250 95000 0.00029 0.0038 40

Excel formula:

=H_BOIL_HANLEEKIM(0.000025, 0.35, 0.0019, 580, 12, 0.00017, 0.085, 870000, 2250, 95000, 0.00029, 0.0038, 40)

Expected output:

874.439

Python Code

Show Code 
from ht.boiling_plate import h_boiling_Han_Lee_Kim as ht_h_boiling_Han_Lee_Kim

def h_boil_HanLeeKim(m, x, Dh, rhol, rhog, mul, kl, Hvap, Cpl, q, A_channel_flow, wavelength, chevron_angle=45):
    """
    Calculate boiling heat transfer coefficient using Han Lee Kim 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).
        wavelength (float): Corrugation wavelength (m).
        chevron_angle (float, optional): Chevron angle of corrugations (degrees). Default is 45.

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

Online Calculator

Mass flow rate (kg/s).
Quality at the specific point (-).
Hydraulic diameter of the plate (m).
Density of the liquid (kg/m^3).
Density of the gas (kg/m^3).
Viscosity of the liquid (Pa*s).
Thermal conductivity of liquid (W/m/K).
Heat of vaporization (J/kg).
Heat capacity of liquid (J/kg/K).
Heat flux (W/m^2).
Channel flow area (m^2).
Corrugation wavelength (m).
Chevron angle of corrugations (degrees).