Products / 03.08.2023
Introducing the ZERN ENGINEERING range of sensible plate counter-flow heat exchangers!
Responding to the ever-increasing demand for energy-efficient ventilation equipment, ZERN ENGINEERING proudly presents its diverse range of sensible plate counter-flow heat exchangers.
Our Mission: Solving energy efficiency challenges
As the market demands ever higher levels of performance, ZERN ENGINEERING has found its purpose in taking on this crucial challenge.
Explore the comprehensive range
1️⃣ HU Series: these high-efficiency polystyrene counter-flow heat exchangers maximize the efficiency of your air handling unit (AHU) and ensure top performance.
2️⃣ HC Series: these polystyrene counter-flow heat exchangers strike the right balance between efficiency and pressure drop, making them ideal for a well-balanced ventilation system with less stringent requirements for energy consumption.
3️⃣ HD Series: our latest addition to the range, is designed to provide the lowest pressure drop in a well-balanced ventilation system. Ideal for AHUs with stringent energy efficiency requirements.
4️⃣ Combi Series: designed specifically for high airflow ventilation systems, the Combi Series of polystyrene counter-flow heat exchangers stands out. The main feature of Combi is the monobloc flow direction principle and consequently the efficiency, thanks to the use of two heat exchangers combined in a single casing.
Unleash the potential of plate heat exchangers
Visit our website zern-engineering.com now and discover how our plate heat exchangers can revolutionize your ventilation systems!
Latest news from ZERN ENGINEERING
Explore more articles and updates
Polystyrene counter-flow heat exchangers by ZERN ENGINEERING (HU / HS / HC / HD-EX6 series) high-efficiency plate heat exchangers for applications where only temperature (sensible) transfer is required.
Thermoformed polystyrene plates ensure reliable performance, absolute air separation, and low pressure drop - ideal for residential and commercial units.
Key operational parameters
Performance characteristics
Thermal efficiency
Up to 95% under optimal conditions.
Pressure drop
Typically, 40-150 Pa (depends on airflow and core size).
Operating temperature
−25 °C to +50 °C.
Air leakage
< 0.5%
Maintenance
Durable, corrosion-resistant, washable cores.
Technical features
Design and structure
3D model
Principle of operations
Supply and exhaust air streams move in opposite directions through sealed, alternating channels. Heat crosses the plate walls with no air mixing, maintaining a strong temperature gradient along the full path for maximum efficiency.
Polystyrene plates are vapor-tight, so no moisture is transferred.
Core material
Thermoformed polystyrene, lightweight and corrosion-free, with a monolithic, fully sealed structure to prevent cross-contamination. Channel geometry is optimized for high surface area and low resistance, and the core is washable for easy maintenance.
Casing materials
- Polystyrene (HIPS) - lightweight, insulated; ideal for compact residential units.
- Aluzinc steel - economical and corrosion-resistant for long-lasting performance.
- Aluminum - lightweight, corrosion-resistant; good for humid sites.
- Epoxy-coated - for chemically active or coastal areas.
- Stainless steel (AISI 304/316) - for aggressive/hygienic sites
Main areas of use
Applications
- Residential buildings - apartments, multi-family housing, private homes.
- Commercial facilities - offices, shopping centers, schools, cultural institutions.
- Industrial systems - production halls, warehouses, logistics complexes.
- Hotel and wellness sector - hotels, fitness centers, swimming pools.
- Public spaces - airports, stadiums, exhibition halls, transport hubs.
SIZES OF OUR HEAT EXCHANGERS
MODEL LINE
- Dimensions A and B are fixed. Dimension C is the width of the heat exchanger and can be varied.
- Each heat exchanger model can be manufactured with a depth (dimension C) ranging from 100 mm to 600 mm per unit.
- Heat exchangers with a width of 600 mm and above are supplied as two or more units.
| Series commercial group |
Model | A width [mm] |
В height [mm] |
C depth [mm] |
X casing modification |
| HU / HS / HC / HD-EX6 | 138 | 318 | 138 | 100-600 | 2 / 2.1 |
| 172 | 397 | 172 | 1 / 1.1 / 2 / 2.1 / 3 / 3.1 | ||
| 230 | 455 | 230 | 1 / 1.1 / 2 / 2.1 / 3 / 3.1 | ||
| 232 | 461 | 232 | 1 / 1.1 / 2 / 2.1 / 3 / 3.1 | ||
| 271 | 496 | 271 | 1 / 1.1 / 3 / 3.1 | ||
| 312 | 537 | 312 | 1 / 1.1 / 3 / 3.1 | ||
| 366 | 366 | 366 | 2 / 2.1 | ||
| 450 | 270 | 450 | 1 / 1.1 / 3 / 3.1 | ||
| 394 | 619 | 394 | 3 / 4 | ||
| 477 | 700 | 477 | 3 / 4 | ||
| 533 | 758 | 533 | 3 / 4 |
Decoding Product Specifications
Designation key
HU / HS / HС / HD - EX6
-
B
/
C
-
x
HU / HS / HС / HD - EX6
commercial group
B
height (mm)
C
depth (mm)
x
casing modification
- 1- aluzinc
- 1.1 - aluzinc with a T-profile
- 2 - plastic
- 2.1 - plastic with a T-profile
- 3 - aluminium
- 3.1 - aluminium with a T-profile
- 4 - aluminium epoxy coated