Hot Air Coffee Roaster vs Drum Roaster – Hot air coffee roaster also known as fluid bed coffee ro aster is a type of coffee roasting machine that uses hot air to roast coffee beans. This machine works by directing a stream of hot air directly onto the rotating or moving coffee beans in the roasting chamber.
What is a Hot Air Coffee Roaster?
A hot air coffee roaster consists of a roasting chamber equipped with a heating element to generate hot air. The coffee beans are put into the roasting chamber and the hot air is directed directly onto the coffee beans. The rotating or moving coffee beans in the roasting chamber are exposed to hot air evenly, so roasting can be done quickly and efficiently.
What is a Drum Roaster?
A drum roaster is a type of roasting machine or coffee roasting device that uses a rotating drum to roast coffee beans. This machine is one of the commonly used tools in the coffee industry to process raw coffee beans into coffee beans that are ready to be ground and brewed.
A drum roaster consists of a metal drum that rotates around a horizontal axis. These drums are usually made of stainless steel or other metals that are resistant to high heat. Raw coffee beans are put into a drum. Then the roasting process begins by heating the drum.
So, what is the difference between a hot air coffee roaster vs a drum roaster?
Advantages of Hot Air Coffee Roaster
Apprenticeship Method
The main advantage of a hot air coffee roaster is its ability to roast coffee beans quickly and evenly. Hot air directly hitting the beans ensures that all parts of the beans are exposed to the same temperature. This results in consistent roasting and produces an even flavor throughout the coffee beans.
Roasting Control
Hot air coffee roasters are also usually equipped with sophisticated temperature controls, allowing the roaster to adjust the hot air temperature according to the desired roasting profile. The roasting profile is the combination of temperature and time used to achieve the desired flavor characteristics in coffee beans.
In addition, hot air coffee roasters can also remove moisture or water content in coffee beans during the roasting process. The strong hot air helps to evaporate the moisture contained in the coffee beans, resulting in drier beans ready for grinding.
Production Capacity
In conclusion, a hot air coffee roaster is a type of coffee roasting machine that uses hot air to roast coffee beans quickly and evenly. This machine produces consistent roasting, can remove moisture in the coffee beans and is usually used on a larger production scale than the Drum Roaster.
Roasting Time
The longer the heating is applied to the coffee beans, the more flavor from the original coffee beans is lost. This is why the origin of dark roast is difficult to identify. These roasts often have bold flavors such as cinnamon spice, lavender and brown sugar, like our Kona Kulana espresso black roast.
The roasting process adds new flavors and only a little of the original nutty flavor is retained. A standard air roaster can roast a certain amount of green coffee beans (beans in their original state) in just six to eight minutes
Advantages of Drum Roaster
Roasting Method
As the drum rotates, the coffee beans are exposed to the heat generated by the heated drum. This heat will gradually transform the beans, changing their color, aroma, and taste. At the same time, hot air also flows through the drum to help ensure that the coffee beans are evenly exposed to the heat.
Roasting Control
Drum roasters provide relatively more detailed control over the roasting process of coffee beans. The grill can closely monitor the grilling temperature and time and can adjust the drum rotation speed to achieve the desired grilling profile. This allows the roaster to produce varying degrees of body and flavor characteristics in the roasted coffee beans.
Drum roasters also allow roasters to keep a close eye on the color changes of the coffee beans as they roast. This requires experience and expertise in understanding the visual signs and indicators that indicate the desired roasting level.
Production Capacity
Drum roasters generally have varying production capacities depending on the type and size of the machine. With a maximum output of 480 kg/hour, the Px 120 drum roaster is perfect for medium-sized capacity requirements.
Roasting Time
Whereas the drum method takes up to 15 minutes to complete the roasting process. This is why air-roasted beans are considered to have a purer flavor than drum-roasted beans.
Conclusion
There are some differences between hot air coffee roasters vs drum roasters.
- Roasting Method,
- Roasting Control,
- Production Capacity.
Although hot air coffee roasters and drum roasters are both used to roast coffee beans, they have significant differences in roasting methods, roasting control and production capacity.
Hot air coffee roasters use hot air directed directly at the rotating coffee beans, while drum roasters use a heated drum for slower roasting.
Hot air coffee roasters generally have more sophisticated roasting controls, while drum roasters rely more on the roaster’s experience. The selection of the right roasting machine should be based on the needs of the coffee business and preferences in controlling the roasting profile of the coffee beans.
So, now you have an idea of what roasting machine to use, right?
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