This unit of competency defines the skills and knowledge required to evaluate the performance and efficiency of thermodynamic plant and equipment and select systems to meet specifications. It includes the use of thermodynamic principles, including the law of entropy and the second law of thermodynamics, as applied to gas cycles and vapour cycles, flow-through nozzles and blade passages, impulse and reaction stages of turbines. It includes generation and transfer of heat energy using solid, liquid and gas mediums and application of software.The client may be internal or external to the designer’s organisation.It is suitable for Principal Technical Officers and people in equivalent positions working with heat transfer, air conditioning, solar, geo-thermal and other power generation applications involving thermal energy transfer.Individuals completing this work either already have or are developing skills and experience in scientific principles, evaluation of thermodynamic system components, mathematics and computer techniques.No licensing, legislative or certification requirements apply to this unit at the time of publication.