.ThermoCycle.Obsolete.SolAbs

Information

Model SolAbs represents the one-dimensional radial energy balance between the the Heat Collector Element (HCE) and the atmosphere. The terms in the energy balance depends on the collector type, the HCE condition, the optical properties and the ambient condition.

The phenomena represented by the model are:

• Convection in the heat transfer fluid.
• Conduction and thermal energy storage in the metal pipe.
• Convection and radiation transfer in the vacuum between the glass envelope and the metal pipe.
• Conduction and thermal energy storage in the glass envelope.
• Radiation and convection to the environment.

The model assumptions are:

• Temperatures, thermal energy flux and thermodynamic properties are considered uniform around the circumference of the HCE.
• Solar absorption is treated as a linear phenomenon.
• Constant density in the metal pipe and in the glass envelope.
• Constant heat capacity in the metal pipe and in the glass envelope.