Method of drying fresh whole coffee

Advantages:

* No fresh grinding, coffee is less black if it encounters rain (but also not with the long rainy weather)
* If exposed on the field, the ability to drain water is likely to be black due to rain is lower than the milling and drying.

Defect:
Long drying time, very costly to protect and plow
* The longer the time on the yard, the more likely they are to be in the rain, each rainy season will take several days to dry the plow.
* High risk of leakage due to theft and rain in the sloping areas.
* When the price was not dry before the sale, wait until dry, the coffee is rampant.

Workers island coffee on a static oven
Workers island coffee on a static oven

Blend out to expose to dry quickly
Advantages:
* Fast drying, only 3 sunny if the sun is good, so overcome the disadvantages of raw.

Defect:
* If the rain hit only once, the risk of black coffee is very large.
* Requires after blanching, it must be sunny to expose, otherwise the mold is very fast

Whole dried method
To overcome the disadvantages and promote the advantages of both methods mentioned above, we propose to farmers two methods of drying the whole fruit.
If one of the two investment directions is to be a drying yard or dryer, we recommend investing the dryer because it is clear that the dryer is not dependent on the sun, the drying time of coffee in only 12 -16 hours, using the main raw materials are dried coffee husk, or coal. There are two methods of drying the whole fruit with the following data:

Fixed static oven (suitable for most farmers)
Static drier can hold 150-200kg of fresh fruit / square meter, burned with coffee husk, the volume of coffee is just enough to burn the same amount of fruit.

Use the cover to burn the oven
Workers island coffee on a static oven

The blower must use a special type of centrifugal fan, capable of blowing through the heat of 100-120 degrees Celsius through the hole of a static drum, we have seen some people use the type Axial fans in this case are incorrect because axial fans with very low compression coefficient will not achieve the desired effect.
Engines to pull the fan can use motor or dynamite depending on the actual conditions.
The disadvantage of the static oven is that the people have to take the island by hand, about 2-3 hours to turn around once, but only after 12-16 hours the coffee has dried to the extent that can not be damaged or black. half.
Making a grid for a static oven, where the mechanical is also possible, the problem is to choose the correct grate drying grid, the grid should be sure to use it for a long time.
One thing you have to keep in mind: because it is a direct burner, it is only a case of coffee to dry the whole fruit, not using the coffee pods to dry the coffee beans will cause the coffee to smoke, want to dry coffee Direct burning of coal by burning coal.

Use coffee shells to burn the stove
Depending on the circumstances of the farmers, we should choose the size of the net and drying furnace for saving and appropriate, to ask questions we can join the forum to send comments. ant.

2. Drum Dryer
The only disadvantage of the drier is that the investment is more expensive than static drier, in addition to drum dryer there are many other advantages as follows:
* Dry without islanders
* Drying coffee, coffee, coffee
* The quality of drying is very uniform, regardless of the skill of the island workers
The problem of drying the whole fruit for the drier is simple, just pour the coffee into and burn the oven and run the dryer, the drying time is equivalent to static drying.