— Technical Comparison for Refrigeration and Chiller Systems
Plate heat exchangers (PHEs) are increasingly used as evaporators in HVAC and refrigeration systems due to their compact size and high efficiency. Within PHEs, two evaporating strategies are most common:
DX (Direct Expansion) Evaporation
Flooded Evaporation
Though both operate within a plate-type geometry, they differ significantly in distribution, efficiency, refrigerant charge, and control complexity.
