Further information

Teaching content:

Thermally highly stressed components can be found in many areas: For example, the hot gas temperatures in modern gas turbines and aircraft engines are several hundred Kelvin above the permissible material temperatures of the turbine components. In the field of electromobility, the increasing power density of electric motors and the associated power electronics means that the waste heat generated must be dissipated via ever smaller surfaces. Furthermore, the battery must be kept within a narrow temperature range for efficient operation. This requires complex cooling processes in order to meet the requirements for operational safety and service life.

In this lecture, the necessary basics of forced convective and radiation-driven heat transfer are taught in a first step. Building on this, various cooling methods are then presented, their specific advantages and disadvantages highlighted and new approaches for the further improvement of complex cooling methods discussed. Subsequently, the performance of the presented cooling methods is demonstrated using practical applications. The course concludes with an overview of experimental and numerical methods for characterizing heat transfer.

Workload:

Attendance time: 30 h
Self-study: 90 h

Learning objectives:

Students will be able to:

• describe the fundamentals of forced convective and radiation-driven heat transfer and film cooling
  describe
• name, differentiate and analyze the various cooling methods
• evaluate the advantages and disadvantages of cooling methods and discuss approaches for improving complex cooling methods
• design simplified cooling concepts for thermally highly stressed components
• name and evaluate experimental and numerical methods for characterizing heat transfer

Exam: oral, 30 minutes
Aids: none