Heat Transfer

Contents / notes

• Conduction, convection and radiation as modes of heat transfer.
• Temperature gradient, thermal conductivity and heat flux.
• Effect of surface nature on energy radiated and absorbed.
• Conductivities of common materials.
• Thermos flask and vacuum flask.
• Land and sea breezes.
• Combustion engines.

Candidate objectives

• Differentiate between conduction, convection and radiation.
• Solve problems on temperature gradient, thermal conductivity and heat flux.
• Assess the effect of surface nature on energy radiated and absorbed.
• Compare the conductivities of common materials.
• Relate the component parts to the operation of a thermos flask.
• Differentiate between land and sea breezes.
• Analyse the operating principles of internal combustion engines, jet engines and rockets.
• Understand the advantages and disadvantages of electric engines compared with combustion engines.