Air Conditioning, Heat Pump, and Ventilation Systems (HVAC Climate)

Contact name Dan Marsh
Typical duration 2 days
Email for more information d.marsh@gtisoft.com

This two-day class will introduce the use of GT-SUITE software for modeling of air conditioning or heat pump systems, including the refrigerant circuit, HVAC ducting, and cabin.  The course is targeted towards engineers with responsibility for design and analysis of A/C systems, or for those who are responsible for overall vehicle energy management including an A/C system.

The class will consist primarily of interactive model building exercises.  The following are the primary topics to be covered:

Modeling the refrigerant flow network:  The participant will learn how to build a model of the refrigerant flow network by two methods.  First, the participant will learn how to build flow components manually to understand basic modeling and discretization concepts.  Second, the participant will learn how to quickly and easily transform a 3D CAD geometry file into a 1D flow network in GT-SUITE using the pre-processing tool GEM3D.

Modeling A/C system components:  The participant will learn how to build and calibrate the basic components of A/C systems, such as compressor, receiver/dryer, thermal expansion valve, and heat exchangers.  The participant will also learn how the COOL3D pre-processing tool can be used to build and automatically discretize more complex scenarios (non-uniform inlet air flow, for example).

Assembling the complete A/C system model for system level calculations:  The participant will learn how to assemble the refrigerant flow network and A/C components into a complete model of the A/C system. Steady state and transient analysis of this system will be discussed.  The participant will learn the basics of the GT-POST post-processing tool for all analysis of results.

Modeling air circuits:  Modeling of the HVAC ducting and blower will be discussed.  The participant will also learn how the model could be extended to include a more complete model of the underhood air path (cooling module or complete underhood).

Modeling the vehicle cabin:  The participant will learn about the different levels of modeling detail available for modeling the cabin within GT-SUITE.  The use of COOL3D to create a detailed 3-D cabin model will be discussed.

Integration with Cooling/Engine/Vehicle models:  The participant will understand the capabilities of GT-SUITE to integrate A/C system models into larger vehicle system level simulations that may include cooling, engine, and driveline systems.  Cabin pulldown transient simulations will be discussed, as well as transient drive cycle analysis for fuel economy/energy management (i.e. US EPA SC03 cycle).

Note: This course may be offered as a future open registration event OR requested as a custom training at a GTI office location or your location.