A coffee roaster always strives to achieve better control of the roasting process. Since coffee roasting is ultimately the transfer of heat over time, it is important for coffee roasters to have a better understanding of heat transfers inside a coffee roaster and how to manipulate it to achieve their desired outcomes. By mastering the science behind heat transfers, roasters can work more efficiently, consistently, and yield better-roasted beans.
There are three main forms of heat transfer that take place during coffee roasting:
Today, modern roaster machines have a wide range of features to create the desired roast profiles and repeat them accurately and consistently. A lot of coffee roasting machine manufacturers are taking into account the reduction in energy consumption and remission, as well as the increase in efficiency and productivity, bringing innovation and design of roasting equipment to new heights. This means that the materials used and the quality of the build of a roasting machine of a specific size will also be adjusted to achieve the targeted energy output and the required burner capacity.
When selecting materials for coffee roasting machines, it is crucial to opt for thermal generation and stability. Contemporary roaster designs are leaning towards more responsive as well as economical materials such as copper, aluminum, and stainless steel, as these materials offer better control to switch heating and cooling on and off on demand. Controls are improved from basic, manual gauges into technical and programmable panels. Drum types range from insulated or uninsulated, single or double-wall, carbon, casted steel or stainless steel. The heat source also ranges from simple atmospheric gas burners to electric burners. Berto roaster machines use stainless steel, a sophisticated control panel with automated profile replication mode, variable drum speed, and variable airflow. Combined, all of these features will guarantee every roaster to have the best experience roasting coffee with Berto roaster machine.
Below are the most common types of roaster machine designs:
Along with the great leap in the effort to achieve consistency and high quality of coffee everywhere in the world, the manufacturers of coffee roasting machines need to accommodate a vast range of requests for the working features of their machines. That is why Berto roaster machines are built only with the best materials and equipped with the best features to make roasting a smooth process for coffee roasters. In addition, coffee roasters need a better understanding of how the heat transfer works in various roaster machines, particularly the ones they are currently using, and how to utilize this heat transfer process to achieve their targeted roast profile.
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