Rotary Heat Exchanger - Rotor

Enventus Rotors come in standard thickness in direction of air flow of 200mm (100mm available on request), and are produced from diameters starting at approx., 0.25 M up to 5 M. Any intermediate diameter size is possible.
The construction of the storage matrix consists of alternating layers of flat and corrugated foil, which form a spiral from the center. This results in a defined structure of small triangular flutes. Efficiency and pressure drop of the rotor can be optimised by varying the height of the corrugated foil flutes.
Embedded interior spokes, within the storage matrix, form an extremely rigid spoke and rim construction. In this way, a maximum mechanical stability of the storage matrix is achieved, holding the foil laminations together without any glue.

l The Right Foil for any Application

The Eurovent Certification defines 3 classes of rotary heat exchanger types:

Condensation Rotors (ST1)
The condensation rotor is a cost-efficient solution to recover heat and is suitable for standard applications in comfort ventilation. Humidity is only transferred in cases when the dew point of one of the air streams is reached.

Hygroscopic Rotors (STE1)
The hydroscopic surface of this rotor class supports humidity transfer. Typically used for standard applications in comfort ventilation systems to recover humidity during moderate temperature periods.

Enthalpy Rotors (Sorption Rotors) (HX1 /HS1)
The desiccant coating of the enthalpy rotors provides an expanded capacity in transferring humidity. The capacity is at a constant high level, valid for year-round use. This is especially important for climate zones with general high outdoor temperature and humidity. Because the enthalpy rotor supports the pre-cooling and dehumidification the outdoor air it substantially reduces the energy consumption of the down stream cooling equipment.

For special applications, other suitable material types are available:

Increased rigidity (AK2)
Under extreme strain, for example, applications with automatic cleaning devices using high pressure water in industrial equipment, we suggest a minimum foil thickness of 100 micron.

Increased corrosion protection (STC,AK,AKE)
In an environment with aggressive components in the air it is either recommended to use a rotor with epoxy coating (STC1) or a sea water corrosion resistant foil (AK) for better corrosion protection. Such applications can be, e.g. dairy industry, on ships or for coastal areas. Other applications for additional corrosion protection are adiabatic cooling and cooling rotors of Direct Evaporative Cooling (DEC) units.

Sectorised Rotors, Divided casing
Large rotors need to be sectorised for the reasons of transport, stability and insertion into a building. The storage matrix is split into segments which need to be installed inside the divided casing at the final site.