Enthalpy cross-flow heat exchangers

Series Е-ЕХ4

GENERAL DESCRIPTION
  • The E-EX4 cross-flow enthalpy heat exchangers are able to recover heat and warmth and to transfer them to the intake air flow.
  • An ultrathin polymer membrane serves as a partition between the air streams and enables both heat and humidity recovery.
  • The membrane has a thin polymer barrier film, that allows to water vapour transit through it. At the same time transition of gases, contaminants, smells, microbes and viruses is not possible.
  • The enthalpy heat exchangers keep the balanced comfortable indoor humidity in dry winter and hot humid outside conditions.
DESIGN
  • The heat exchangers are made with the face overall dimensions of 200×200 mm, 250×250 mm, 300×300 mm, 400×400 mm and 500×500 mm. The heat exchanging plates have the depth from 100 mm up to 400 mm.
  • The accumulating mass consists of aluminium waveform plates, that are laid perpendicular to the channel direction. The wave height is 2,7 mm, 4,5 mm and 6,0 mm.
  • The vapour-permeable membrane is located between the aluminium plates. This design keeps the two air streams fully separated.
  • The casing has no movable parts and is made of various materials.
APPLICATIONS
  • Ventilation and air conditioning systems
  • Heat recovery ventilation in residential
    premises
  • School premises
  • Hospitals
  • Office buildings
AIRTIGHT SEALING

Air sealing process is automated. 

High-quality hot-melt synthetic-base polymer adhesive used in food and pharmacy industries provides air tightness.

APPLIED MATERIALS
  • The heat exchanging plates are made of high-quality aluminium foil with the thickness from 0.07 mm.
  • The membrane is made of polymer with microporous structure and has antibacterial coating.
  • All the casing components can be made of:
     – high-quality aluzinc plates;
     – impact-resistant polystyrene;
     – high-strength aluminum alloy.
MODIFICATIONS
The heat exchangers have four basic casing modifications.
Version 1. Aluzinc casing

The head plates and the profiles are made of aluminium and zinc alloy. 

Used for corrosion-resistant coating of steel sheets.

Version 2. Plastic casing

The head plates and profiles are made of impact-resistant polystyrene.

The upper head plate is supplied with a transport polypropylene holder.

Version 2.1. Plastic casing with T-profile

The head plates and profiles are made of impact-resistant polystyrene. The upper head plate is supplied with a transport polypropylene holder. T-profile with an inner extensional groove is used instead of a standard profile in case of a special mounting in a mounting seat of an air handling unit.

Version 3. Aluminum casing

All elements of the casing are made of sheet of high-quality aluminum alloy 5754, which provides protection against corrosion and has a low specific weight. It is standardly used for heat exchangers E‑EX4 400/… and E-EX4 500/… It is possible to use aluminum on other types of heat exchangers of this series.

MOUNTING OPTIONS

Several E-EX4 cross-flow plate heat exchangers can be installed in series or connected to modular units with the size up to 100x1000x800 mm.

OPERATION CONDITIONS
  • The applied materials enable operation, storage and transportation of the heat exchangers in the temperature conditions from -25 up to +50 °C.
  • The E-EX4 heat exchangers are not subjected to icing during normal operation conditions in winter and during intensive humidity recovery. Even in case of icing on the heat exchanging plates the heat exchanger will not get damaged. Icing likelihood increases if the heat exchangers are continuously operated at very low outside temperature and high humidity conditions.
TECHNICAL MAINTENANCE
  • The heat exchangers have no movable parts and metal connections, therefore mechanical maintenance is not required. Slight contaminations are eliminated with flushing with warm water up to +55 °C.
  • Do not use high pressure water jet for cleaning of the heat exchanger because it may damage the ultrathin membrane.
MODEL LINE
NameA: width [mm]B: depth [mm]h: distance between plates [mm]x: casing modification
E-ЕХ4 200200100…4002,7 / 4,51 / 2 / 2.1
E-ЕХ4 250250100…4002,7 / 4,51 / 2 / 2.1
E-ЕХ4 300300100…4002,7 / 4,5 / 6,01 / 2 / 2.1
Е-ЕХ4 400400100…6002,7 / 4,5 / 6,03
Е-ЕХ4 500500100…6002,7 / 4,5 / 6,03
DESIGNATION KEY
Е-ЕХ4 А / В / h - x

Е-ЕХ4 – commercial group
А: width, length [mm]: 200/250/300/400/500;

В: depth [mm]: 100…600;
h: distance between plates [mm]: 2.7/4.5/6.0;

x: casing modification:
• 1: aluzinc
• 2: plastic with a standard profile
• 2.1: plastic with a T-profile
• 3: aluminum