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, but it is also critical to indoor air quality from a human perspective. So, how do we control humidity 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, the humidity levels are usually much lower, sometimes only around 10- 20%, which is too dry for our health and comfort. This is usually the case in colder climates.
Plants and vegetation can increase indoor humidity, but a large quantity is needed for a significant impact. Plant walls are an excellent way to improve indoor air humidity and are installed more frequently in high-end buildings.
The most common way to increase building indoor humidity levels is to use fixed or portable humidifiers with steam or adiabatic technology. However, other ways exist to incorporate 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 humidity levels indoors 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 at slight differences in humidity levels between outdoor and indoor air.
Heatex offers hybrid and sorption rotary heat exchangers whenever humidity transfer capabilities are required. Hybrid rotors feature sorption coating on the flat foil and sorption rotors 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 that contains a uniform network of crystalline pores and empty adsorption cavities that maximize the adsorptive surface area. Due to its uniform pores size, the molecular sieve does not adsorb compounds with diameters larger than 3Å but perfectly picks up water vapor (humidity) molecules since they correspond well in size.
Molecular sieve is approved in tests according to the hygienic standards of ISO846. Heatex rotary heat exchangers are carefully designed to meet the demands of each specific 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.
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