02 – PROCESS AIR
Process Air Heat Exchanger
The line of process air heat exchangers type AXA is used in industrial applications where you never compromise.
Industrial drying processes require high performances, high temperatures and compact units, achieved electrically or by means of a heat carrier of high temperatures and often high pressure too.
The AXA models are dedicated these tasks, and their design offers supreme reliability and low operation costs.
Possible heat sources for these are electrical heating elements, saturated steam, heat transfer fluid (HTF), hot water and combinations of these.
There are many options available using the AXA process air heat exchangers.
Technical description
Design according PED 2014/68/EU & EN-standards. CE-marked and with full documentation.
Heating of process air is very often done electrically (resistances), by a heating media such as saturated steam, heat transfer fuid (HTF) or by hot water:
Steam air batteries heat process air (or gaseous fluids) by saturated steam.
Optionally they can be combined with other heat sources.
Electrical air batteries heat electrically i.e. using heating elements using electrical resistants.
Thermal fluid air batteries heat by hot circulating thermal fluid (hot oil) up to 300°C at atmospheric pressure where the heating is provided by a so-called thermal fluid system.
Water-based air batteries are available both as heaters using hot water, and as coolers using cold water, glycol or a refrigerant.
The coolers are also available in a special dehumidifier design for drying of process air.
Options are extractable sections for easy pull-out, or with flanged duct connections, gas-tight housing, reinforcements, adjustable legs and also instrumentation / armatures.
Need in-depth technical data and details?
Typical capacities, dimension tables, diagrams, illustrations, photos with examples are collected in our Technical Knowledge Center.
Technical data:
Process Air Heat Exchanger
| Subject | Technical data |
| Brand | AB&CO (Copenhagen, Denmark) |
| Models | AXA |
| Option 1 – Heating Method | 1) Electrically (Resistant heating elements) |
| Option 1 – Air Flow / Temperature | Up to 100.000 kg/h / 400°C |
| Option 2 – Heating Method | 2) Saturated steam – up to 85 bar gauge |
| Option 2 – Air Flow / Temperature | Up to 100.000 kg/h / 290°C |
| Option 3 – Heating Method | 3) Thermal Oil / Heat Transfer Fluid (HTF) |
| Option 3 – Air Flow / Temperature | Up to 100.000 kg/h / 290°C (HTF 300°C) |
| Option 4 – Heating & Cooling | 4) Hot Water / Cold Water 100.000 kg/h air |
| Extent of the Standard Design | – Special electrical resistant heating elements – Compound finned tubes (extruded fins) – Fin plate (coil type) – Industrial gastight cabinets w. flanges – Simple and affordable open designs |
| Options / Special Design | – Air-to-Air cross flow heat exchangers – Dehumidifiers with reheater (air drying) – Many optional materials as standard – Wash-off arrangements – Ultra large sizes and hybrids (combinations) – Special unique customer design |
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