Adsorption Rotors
One of our most appreciated and sold products at the moment are the adsoprtion rotors. And that for a good reason!Humidity control is a key factor in preserving a building’s structural integrity and is also critical to indoor air quality from a human perspective. How can we control moisture transfer and improve indoor air quality?
Energy Recovery With Humidity Transfer
It is often stated that RH 40% should be the minimum humidity level for human health. Still, in residential buildings, humidity levels are usually much lower, sometimes only around 10-20%, which is too dry for our health and comfort. This is typically the case in colder climates.
Plants and other vegetation can increase indoor humidity, but substantial quantities are required for a significant effect. Plant walls are an effective means of improving indoor air quality and moisture levels and are increasingly installed in high-end buildings.
The most common method for increasing indoor humidity in buildings is to use fixed or portable humidifiers with steam or adiabatic technology. However, alternative approaches exist for incorporating humidity transfer into the ventilation system.
Humidity recovery in comfort ventilation systems uses heat exchangers to transfer heat and moisture from the outgoing air to the incoming air. This helps maintain comfortable indoor humidity while minimizing energy consumption.
Humidity recovery with adsorption rotors has a 60-90% humidity recovery efficiency, which remains pretty constant in all conditions. Humidity can be recovered even when the difference between outdoor and indoor air is slight.
Heatex offers hybrid and sorption rotary heat exchangers for humidity transfer. Hybrid rotors feature a sorption coating on the flat foil, and sorption rotors are used on both the flat and corrugated foils.
Molecular sieve (Synthetic Zeolite) coating has become the preferred choice internationally due to its superior characteristics in improving indoor air quality.
A molecular sieve is an engineered material with a uniform network of crystalline pores and empty adsorption cavities, maximizing adsorptive surface area. Because of its uniform pore size, the molecular sieve does not adsorb compounds with diameters larger than 3 Å. Still, it readily adsorbs water vapor (humidity) molecules, as they are the same size.
Molecular sieve has been tested and approved in accordance with the ISO 846 hygienic standards. Heatex rotary heat exchangers are carefully designed to meet the specific demands of each application and maximize energy recovery, with or without humidity transfer. Ask our experts if you want to know more!
NOTE: Not all models and options are available in the North American or APAC regions. Read more about our rotary heat exchangers