.Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT .Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDTThis model validates the heat capacitor model for the window glass, with varying control signal and heat conduction to a thermal capacity that is a surrogate for the room model. As the thermal capacity is at a different temperature, heat is exchanged. The window area with the small control signal is smaller, and hence a smaller amount of heat is exchanged.