Reading about water vapor distillation, I found two differents approaches:
- Direct one
- Indirect one.
The first has an arrange like:
Here the chamber contains water and the plant. It is cooled and as the water vapor flows away it carries the low volatile compound vapor of the plant/vegetable. Both condense and the oils can be obtained.
The vegetal is on the same pot as water.
The second one:
Here the water vapor is generated on a first po (the blue one) and when flowing through the balloon, it carries the oil vapor. I should remark: the vegetal is on a different pot than water.
Do you see any fundamental difference on the process or something related?
It might has to do with the aggregation state of the material we need to extract, but I'm not sure.