The drum spins in a circle while gas, electricity, or an open flame heat the beans from underneath A hot-air coffee roaster forces hot air through a screen underneath the coffee beans so that heat is transferred throughout. The roasted beans are then cooled in a process known as quenching. How does a roasting machine … Read more
The single wall drum roaster is your typical drum roaster. It contains a burner that heats the drum from underneath as it rotates, and the drum in turn heats the coffee beans through conduction This lends itself to inconsistent roasts batch to batch because of the energy retained in the drum. How does a roasting … Read more
A fluid-bed roaster works by pushing hot air across coffee beans Fluid-bed roasters are generally less expensive than comparable drum roasters, and they produce a bright flavor profile. In the case of our spider graph charts in each More.: A fluid-bed roaster works by pushing hot air across coffee beans. What is a fluid bed … Read more