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Auxiliary Cooling and Heat Recovery
Power generation duty covers auxiliary cooling circuit isolation, condenser water isolation, lubrication oil cooling, diesel engine cooling and heat recovery, and co-generation and geothermal applications.
Isolation is the theme. Keeping open circulating water away from equipment that would foul or corrode is what most of these exchangers do, and the approach temperature they achieve determines how much cooling capacity survives the isolation.
Lube oil. Viscous, hot and critical. The plate corrugation generates turbulence at velocities where a tube would be laminar, which gives a much smaller exchanger for the same duty.
Co-generation and heat recovery. Recovering jacket water and exhaust heat into district or process heating is where plate exchangers earn their keep, because close approach converts directly into recovered energy.
Typical Specification
- Typical duty: Auxiliary cooling, condenser water isolation, lube oil
- Engine duty: Diesel jacket water cooling and heat recovery
- Co-generation: Jacket and exhaust heat into process or district heating
- Geothermal: Loop isolation and heat transfer
- Materials: Selected against circulating water chemistry
- Oil duty: Plate turbulence at low velocity
- Isolation benefit: Protects downstream equipment from open water
- Approach: Close approach preserves cooling capacity
- Redundancy: Spare plate sets recommended on critical circuits
- Cleaning: Frame opens for periodic service
Common FAQs
Because open circulating water fouls and corrodes everything it touches. Isolating it means one exchanger fouls instead of every auxiliary circuit downstream, and cleaning one unit is far cheaper.
Yes, and it is usually much smaller than the tubular alternative, because plate corrugations create turbulence at velocities where a tube would still be laminar.
It is one of the better co-generation opportunities. A close approach converts directly into recovered energy, which is why plate exchangers dominate this duty.
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