The Principles of Heat Transfer in Coffee Roasting
The principles of heat transfer in coffee roasting
The Heat Conduction Principle
- Heat always transfers from hot to cold materials.
- Heat is the energy stored as heat within a material.
– An excessive amount of heat can cause fires in cages, silk-shell storage boxes, and exhaust chimneys.
- Convection: the movement of air around a particle.
- Contact with the roasting cage: the cage must rotate to prevent grain burning.
- Radiation: A metal cage that is extremely hot.
During the roasting process, heat conduction occurs.
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