IAPWS92_RHOG_SAT

This function returns the saturated vapor density of water as a function of temperature using the IAPWS-92 supplementary release fit.

The correlation is:

\rho_g^{sat} = f(T)

where T is saturation temperature and \rho_g^{sat} is saturated vapor density.

Excel Usage

=IAPWS92_RHOG_SAT(T)

• T (float, required): Water saturation temperature (K).

Returns (float): Saturated vapor water density at the specified temperature (kg/m^3).

Example 1: Saturated vapor density near room temperature

Inputs:

T
300

Excel formula:

=IAPWS92_RHOG_SAT(300)

Expected output:

0.0255887

Example 2: Saturated vapor density near boiling point

Inputs:

T
373.15

Excel formula:

=IAPWS92_RHOG_SAT(373.15)

Expected output:

0.598099

Example 3: Saturated vapor density at elevated temperature

Inputs:

T
450

Excel formula:

=IAPWS92_RHOG_SAT(450)

Expected output:

4.81192

Example 4: Saturated vapor density near critical temperature

Inputs:

T
640

Excel formula:

=IAPWS92_RHOG_SAT(640)

Expected output:

177.264

Python Code

Show Code

from chemicals.iapws import iapws92_rhog_sat as chemicals_iapws92_rhog_sat

def iapws92_rhog_sat(T):
    """
    Compute saturated vapor water density from temperature using IAPWS-92.

    See: https://chemicals.readthedocs.io/chemicals.iapws.html#chemicals.iapws.iapws92_rhog_sat

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

    Args:
        T (float): Water saturation temperature (K).

    Returns:
        float: Saturated vapor water density at the specified temperature (kg/m^3).
    """
    try:
        return chemicals_iapws92_rhog_sat(T)
    except Exception as e:
        return f"Error: {str(e)}"

Online Calculator

T *

Water saturation temperature (K).