Area 09
Thermal engineering
How heat moves, and how to keep it in or out
Thermal engineering is about heat: how it flows from warmer things to colder ones, and how engineers use materials, insulation and shape to keep a home warm, a drink cool or a machine from overheating.
Who it suits
Children who wonder why a metal spoon gets hot in tea, and learners who like experiments with everyday materials.
What you will learn
- How heat flows from a warmer body to a colder one
- Why some materials conduct heat well and others insulate
- How quickly things heat up and cool down, and what that depends on
- How engineers choose materials by their thermal properties
Example experiments
-
Heat one end of rods made of different materials and compare how fast the other end warms up.
-
Wrap a virtual cup in different insulating layers and see how long the drink stays hot.
-
Change the thickness of a wall and compare how much heat passes through it.
Things you can build
-
A well-insulated lunch box
-
A wall that keeps a room warm
-
A simple heat sink for an electronic part
These examples show the kind of work in this area. The published lessons may differ.
What the simulation simplifies
- Heat transfer is calculated with simplified teaching models and a few properties per material.
- Moving air and sunlight are simplified; real buildings and machines are more complex and need professional checks.
Every simulation simplifies reality. Knowing how it does so is part of learning engineering.
Links to school subjects
Physics (heat and temperature), chemistry (materials), geography (climate), design and technology
Connections to other areas
Thermal engineering connects with structures and materials, with electrical circuits (parts heat up) and with control systems (thermostats).
Good to know
A vacuum flask keeps drinks hot or cold because it slows down every way heat can travel.