Aluminium cross-flow heat exchangers

Series Ha-EX4

GENERAL DESCRIPTION
  • The Ha-EX4 aluminium heat exchangers are the unique high-efficient heat exchangers designed for efficient energy recovery and re-use. The cross warm extract and cold intake air streams are separated with the plate walls and do not come in contact with each other. This design solution excludes transfer of humidity, contaminants, smells and microbes from one air stream to another.
  • The heat recovery efficiency is about 85 %! This high heat recovery efficiency is attained due to the unique design, shape and material of the heat exchanging plates. Turbulence in the heat exchanging stack develops even at low speed. The specially designed material of the plates enables to reach higher heat conductivity.
DESIGN
  • The heat exchanger has a square base with side dimensions of 300×300 mm, 350×350 mm, 375×375 mm, 400×400 mm, 500×500 mm, 600×600 mm, 700×700 mm, 750×750 mm, 800×800 mm, 850×850 mm, 900×900 mm, 1000×1000 mm. The heat exchanger depth ranges from 100 mm to 600 mm. 
  • The heat exchanger consists of a heat accumulating mass (a set of plates) and a casing. The assembled and interconnected plates build a heat exchanging stack with many air channels. The air channels are crossed at 90° angle. The two air streams passing through these channels do not mix.
  • The distance between the plates of 2.7, 4.5, 6.0 or 8.0 mm provides combination of the maximum efficiency and the lowest pressure differential.
APPLICATIONS
  • Heat recovery in winter and cool recovery in summer.
  • Air conditioning and heating systems.
  • Ventilation of premises.
  • Separation of air streams.
  • Heat removal in control boards.
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 plates of this series of heat exchangers are made of high quality aluminium alloy. This material is featured with high thermal conductivity and high performance characteristics.
  • All the casing components of this series of heat exchangers are made of high quality aluminium alloy.
MODIFICATIONS
Version 3. Aluminium casing

The casing components are made of high quality aluminium alloy for maximum corrosion protection.

MOUNTING OPTIONS

Several aluminium cross-flow Ha-EX4 heat exchangers can be installed in series or connected to modular units with a face size of up to 1000×1000 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.
  • In winter season the air humidity is condensed on the heat recovery plates and the condensed water freezes at the temperature of -5 °C and lower. Heat recovery efficiency during these temperature conditions is slim to zero. Avoid condensate freezing on the heat exchanger plates.
TECHNICAL MAINTENANCE

The Ha-EX4 heat exchangers have no movable parts and mechanical maintenance is not required.

Slight contaminations are eliminated by air jets or flushing with warm mild detergent solutions.

MODEL LINE
Name A: width [mm] B: depth [mm] h: distance between plates [mm] x: casing modification
Нa-ЕХ4 300 300 100…600 2,7/4,5/6,0 3
Нa-ЕХ4 350 350 100…600 2,7/4,5/6,0 3
Нa-ЕХ4 375 375 100…600 2,7/4,5/6,0 3
Нa-ЕХ4 400 400 100…600 2,7/4,5/6,0 3
Нa-ЕХ4 500 500 100…600 2,7/4,5/6,0 3
Combi Нa-ЕХ4 600 600 100…600 2,7/4,5/6,0/8,0 3
Combi Нa-ЕХ4 700 700 100…600 2,7/4,5/6,0/8,0 3
Combi Нa-ЕХ4 750 750 100…600 2,7/4,5/6,0/8,0 3
Combi Нa-ЕХ4 800 800 100…600 2,7/4,5/6,0/8,0 3
Combi Нa-ЕХ4 850 850 100…600 2,7/4,5/6,0/8,0 3
Combi Нa-ЕХ4 900 900 100…600 2,7/4,5/6,0/8,0 3
Combi Нa-ЕХ4 1000 1000 100…600 2,7/4,5/6,0/8,0 3
DESIGNATION KEY
Ha-EX4 A/B/h - x

Ha-EX4: commercial group.
A: width, length [mm]: 300/350/375/400/500

Combi Ha-EX4 A/B/h - x

B: height [mm]: 100…600
h: distance between plates [mm]: 2.7/4.5/6.0

x: casing modification:
• 3: aluminium casing.

Combi Ha-EX4: commercial group.
A: width, length [mm]: 600/700/750/800/850/900/1000

B: height [mm]: 100…600
h: distance between plates [mm]: 2.7/4.5/6.0/8.0

x: casing modification:
• 3: aluminium casing.