This plate heat exchanger combines the crossflow insert block with an integrated bypass. A louvre damper in front of the block decides whether the air flows through the plate pack or past it.
Design
The bypass channel sits below the plate pack in the same block. The damper is mounted on the inflow side, and its vertical louvres move together via a linkage.
Operation
In normal operation the air flows through the plate pack and the heat is recovered. In summer or for defrosting the damper opens the bypass. Intermediate positions control the heat recovery output.
Technology
| Type | AEC-200 |
|---|---|
| Flow arrangement | crossflow with bypass |
| Damper | aluminium louvre damper |
| Drive | square shaft for rotary actuator |
| Leakage | low, depending on design |
| Material | Block as insert block, damper in aluminium, for corrosive air in stainless steel or plastic |
Example illustration
Strengths
- Bypass for summer operation and defrosting
- Prepared for rotary or linear actuators
Limits
- Dampers and actuator need regular maintenance
- Takes more space than the plain installation block