functionCalculTsky_withRH
Information
This function returns the sky temperature from the water vapor pressure and the dry bulb temperature.
Hypothesis and equations
This function returns the sky temperature based on the following equation:

with:
- Kt defined as the ratio between the global horizontal received to the ground and the global horizontal received outside atmosphere.
- Pvap the water vapor pressure.
Bibliography
Longwave sky radiation parameterizations , M. Aubinet, Solar Energy n°53 (version 2) pp. 147-154, 1994
Instructions for use
none
Known limits / Precautions for use
This sky temperature estimation is more precise than the one obtained with CalculTsky_withoutRH model.
Of course, there are other correlations to calculate the sky temperature.
Validations
Validated model - Amy Lindsay 03/2014
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Licensed by EDF under a 3-clause BSD-license
Copyright © EDF 2009 - 2023
BuildSysPro version 3.6.0
Author : Amy LINDSAY, EDF (2014)
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Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Time | t | Time | |
| Real | T_seche | Dry bulb temperature [K] | |
| Real[10] | G | Solar information vector | |
| Real | Pvap | Water vapor pressure [Pa] |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Real | T_ciel | Sky tempereture [K] |