The EnergyPlus calculation models used to simulate the air handling units in air-air conditioning systems have been changed. In the previous version (2024.a), this transformation began with the air handling unit of the constant air flow system. In version 2024.b, this change has been completed by also transforming the air handling units of the variable-flow and dual-duct air-air conditioning systems.
In previous versions, a "template" type model available in the calculation engine was used, which presented configuration and combination restrictions with other systems in the same job. With the change of model in version 2024.a and 2024.b, these restrictions have been removed. In addition, the definition interface of these systems has been organised into tabs to make it clearer.