This example shows the application of Buildings.ThermalZones.ReducedOrder.RC.TwoElements in connection with equivalent air temperature calculation in Buildings.ThermalZones.ReducedOrder.EquivalentAirTemperature.VDI6007WithWindow, where the ground temperature is not a constant, but has a trapezoid source. Apart from that, it is identical to Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomTwoElements.
VDI. German Association of Engineers Guideline VDI 6007-1 March 2012. Calculation of transient thermal response of rooms and buildings - modelling of rooms.