It consists in a simplified model for a solar thermal collector;

The component model was adapted from the solar collector model of Soltermica;

Two connectors from ThermoPower library for, respectively, the inlet and outlet of the water stream were added to this model so to make possible the model to be connected to the components assembled using this library.

It consists in a hot water boiler;

It is assembled according to the mass and enthalpy balances in a industrial boiler (water stream and combustion chamber), as described in equations (1) − (3);

The thermal efficiency (ratio between supplied energy and the variation of the enthalpy of the water stream) is considered in the overall mass-enthalpy balance (thus accounting for the overall heat losses).