4 – How to avoid foaming?
There are three methods to de-concentrate the TDS from boiling water in steam chamber.
Skimmer

Skimmer is a simple and efficient method, the water reservoir is designed so that every time you re-fill it with new water, some of the water from the top of the tank will overflow and be evacuated to drain. TDS concentration from the top layer of the water is reduced, risk of foaming to occurred is reduced.
There are two important problems with this methods:
1) Overflowing boiling water is very costly energy wise. Humidifier will constantly waste water and steam during steam production.
2) Adjusting the skimmer overflow rate is not easy because it depends on the mechanical and hydraulic construction of the evaporation chamber.
Drain frequency
Drain frequency sometime called flush cycle, does consist in replacing part or full water content from the steam cylinder, water content is drained down at regular and fixed time intervals.
Those time intervals are sometime calculated based on the true evaporation rate of the humidifier but not always, some steam humidifier drain frequency is independent from evaporation rate, full or part of cylinder content is wasted to drain. Water is renew with new and cold water. As soon as cylinder is full again the steam production can resume.
Drain frequency is adjusted depending on water TDS measurement during first start-up or based on technician or building owner experience.
Again the energy wasted by draining hot water is very important. Also there will be a drop in RH% in the humidified space during the water replacement process.
Water dilution
Water dilution sequence have been developed primarily to avoid drop in steam production caused by the drain frequency method.
This method consists in draining small amount and adding same small amount of fresh water at smaller time intervals. When properly set there will be no more drop of RH% in the humidified space.
Water dilution parameters are numerous, amount of water drained, time interval, power input during water filling, amount of water brought in… As for any of the foam prevention method settings are based on water quality (amount of TDS contained in water).
Main problem of this method is the complexity in setting it up properly and efficiently for the steam humidifier.
5 – What is EcoEnerSmart ™ function?