MindMap Gallery Heat Transfer Mind Map
Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems.
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Heat-Transfer-Mind-Map
Conduction
Definition
flow of heat
high to low temperature
without movement of matter as a whole
energy transferred by particle collisions
Medium
Solids - best conductors because particlesjoined together
Good conductor
Metals because offree electrons
Bad conductors(Insulators)
Air
Foam, expanded polystyrene, jablo, feathersetc. - all trap air so very good insulators
Gases - worst conductors as particles are farapart
ConVection
from high to low temperature
with movement of fluid as a whole
in fluids (liquids and gases)
Convection Current (Flow)
Hot air rises
Expands so less dense
Cold air sinks
More dense
Radiation
Definiton
Flow of heat
From high to low temperature
by electromagnetic waves
Solids, Liquids and Gases
Passes through a vacuum (no air)
Colours
Matt Black - best absorber and emiitter
Shiny Silver - worst absorber and emitter -very good reflector