The contamination constraint
Cleanroom and laboratory exhaust often carries particulates or chemicals that must never re-enter supply air, ruling out enthalpy wheels with carryover.
The safe design
Sensible plate heat exchangers recover heat from exhaust to precondition incoming HEPA-filtered supply air, with a solid wall ensuring zero cross-contamination.
Benefit
Facilities cut make-up-air heating and cooling energy while meeting strict air-quality and containment requirements.