Enthalpy plate counter-flow heat exchangers

GENERAL DESCRIPTION

The new generation of enthalpy counter-flow heat exchangers of the EC-EX6 series is an ideal alternative to standard heat exchangers. In residential premises with low humidity they are ideal for maintaining a comfortable microclimate by recovering humidity from the extract air.
This process is possible due to the unique polymer membrane with a microporous structure that enables transition of water vapour molecules, but blocks transition of bacteria, germs, mould, gases and smells. This design enables to keep high hygienic standards also in sanitary areas, kitchen and laboratories and other premises with permanent sources of air pollution. No transition of smells and toxins. Only warmth and water vapours are allowed.
The supply and extract air streams are moved in the air channels of the heat exchanger plates toward each other. The sensible and latent heat energy is transferred thought the heat exchanger membrane.
The comparison of the standard plate heat exchangers (HU-EX6/HC-EX6 series) and the enthalpy heat exchanger (EC-EX6 series) shows that the standard heat exchangers have higher sensible heat recovery efficiency as compared to the enthalpy heat exchangers, but the enthalpy heat exchangers of EC-EX6 series have higher total heat recovery efficiency due to the latent heat recovery from water vapour.

DESIGN

The heat exchanger has a hexagonal shape with the overall dimensions of 366×366 mm, 230×455 mm and 232×461 mm (length and width).
The maximum depth is 600 mm.
The heat accumulating mass consists of special plates laid as channels to enable moving of air streams toward each other.
The ultrathin membrane is used as a barrier in the heat exchanger.
The rigid airtight casing is protected against mechanical influence.

MEMBRANE

The membrane is a polymer material with a high coefficient of thermal conductivity and moisture transfer. The membrane enables transition of water vapour but blocks transition of biological contaminants, viruses, gases and foreign smells.
The membrane has a special coating that is resistant to acids, alkalis and salts. This coating is necessary to ensure stable operation during membrane application.
The membrane is both tear-resistant and puncture-resistant.
The membrane has excellent resistance to environmental influences and temperature drops from
-25 °C to + 50 °C.
The membrane ensures low air leakage (<1%).
The membrane protects the premises from the penetration of the SARS-CoV-2 virus, bacteria, mould spores, gases (CO2/SF6) and various smells due to its structure. The membrane blocks the penetration of particles >30 nm in diameter. For reference: the diameter of the SARS-CoV-2 virus ranges from 60 nm to 140 nm.

APPLICATIONS

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 membrane is made of microporous polymer with an antibacterial coating.
All elements of the casing are made of:
– Quality sheet metal (aluzinc);
– high-impact polystyrene.

MODIFICATIONS

Two different casing designs are available for this heat exchanger series.

Version 1. Aluzinc casing

The casing components are made of high-quality aluzinc plates.

This modification is used for the size 230×455 mm only.

Version 1.1. Aluzinc casing with T-profile

All the casing components are made of aluzinc. T-profile is used instead of a standard profile.

This profile is used in case of a special mounting in the air handling unit. This version is used only for the size 230×455 mm.

Version 2. Plastic casing

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

This modification is used for the sizes 366×366 mm, 230×455 mm and 232×461 mm.

Version 2.1. Plastic casing with T-profile

All the casing components are made of impact-resistant polystyrene. T-profile is used instead of a standard profile.

This profile is used in case of a special mounting in the air handling unit. This version is used for sizes 366×366 mm, 230×455 mm and 232×461 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.
Storage of heat exchangers in an exposed position in direct sunlight is forbidden.
The EC-EX6 enthalpy heat exchangers are not subjected to freezing in case of normal operation conditions in winter.

TECHNICAL MAINTENANCE

Regular check-up of filters is required to keep the heat exchangers and the supply filter clean. The filters must be cleaned or replaced as
required.
To remove the contaminations flush the heat exchanger with warm water up to 30 °C.
Do not use high pressure water jet for cleaning of the heat exchanger because it may damage the ultrathin membrane.

MODEL LINE

Name	A: width [mm]	B: height [mm]	C: depth [mm]	x: casing modification
ЕС-ЕХ6 366	366	366	100…600	2/2.1

Name	A: width [mm]	B: height [mm]	C: depth [mm]	x: casing modification
ЕС-ЕХ6 230	455	230	100…600	1/1.1/2/2.1

Name	A: width [mm]	B: height [mm]	C: depth [mm]	x: casing modification
ЕС-ЕХ6 232	461	232	100…600	2/2.1

DESIGNATION KEY

EC-EX6 B / C - x

EC-EX6 – commercial group
B: height [mm]: 366/230/232;
C: depth [mm]: 100…600;

x: casing modification:
• 1: aluzinc
• 1.1: aluzinc with a T-profile
• 2: plastic
• 2.1: plastic with a T-profile

*A: width [mm]: 366/455/461 not indicated in the heat exchanger name.

Sales department