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The Development History of Coffee Bean Dryer: pan, Roller, Commercial Bean Dryer, Hot Air Bean Dryer
Coffee has a long history in the pan roasting era. The first people who roasted coffee beans into drinks can be traced back to Central Africa and the Middle East hundreds of years ago, and then the Ottoman Turkish Empire and European colonists brought coffee to the world. The earliest bean roasting tools were thin, perforated pots that roasted directly over high fire, and coffee bakers used spoons to turn the beans and make sure they were roasted.
2020-06-25 Coffee bean dryer development history pan drum commercial hot air type baking bean machine -
General knowledge of roasting of coffee beans electrothermal baking technology
Electricity was only used to drive the rollers of traditional drum dryers and blowers and cooling fans at the end of the 19th century, but it was not an effective source of heat for large-scale baking at that time. Any chef knows that the rate at which electricity is converted into heat is much lower than that at which gas is converted into heat; in addition, the price of gas is much cheaper than electricity. Just from here.
2015-04-13 Coffee beans roasting common sense electroheating technology