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 implies a graphical impression of a particular coffee, whether it be an artistic portrait or data graph of the perception of flavor compounds. In the case of our spider graph charts in each More.: A fluid-bed roaster works by pushing hot air across coffee beans. The roast chamber is filled with heated air provided by a small fan and heating coil located beneath the chamber.
In a fluid-bed roaster, the flow of air is both the heat source and the mechanism responsible for agitating the beans. Since air is the heat source, heating happens via Transfer of heat through the bulk movement of a fluid. In the case of coffee roasting, we discuss convection in the context of heated air moving as a fluid through a roast chamber. More, rather than via convection and The transfer of heat between matter. In coffee, conduction heating is contrasted with convection heating, which occurs in a moving fluid. More, as in a A roaster with a rotating drum that provides agitation to the beans, while a heating element (typically either electric or gas) provides heat. The metal drum conducts heat to the beans, so drum roasters heat More. Fluid-bed roasters are generally less expensive than comparable drum roasters, and they produce a bright flavor profile. This type of roaster works well with small size batches (under half a pound).