What does permeate yield mean in practice?
The actual flux is measured after the membrane is stabilized by recording the tank pressure, temperature and back pressure.
When does it matter?
Decreased production may be due to cold water or clogged pre-filters, not just membrane wear.
Which solutions are related to it?
The result after correcting the conditions is compared with the initial value and at the same time the retention and flow of the concentrate are checked.