Air & Water Cooled Heat Exchanger for Marine Transformers

Marine transformers run continuous heavy loads to power propulsion, hotel loads and offshore auxiliary systems. Single air cooling loses efficiency under high ambient temperature; standalone water cooling faces hidden hazards like pump failure, seawater fouling and leakage.

- Long-term high temperature accelerates insulation aging, cutting transformer service life by 30%–50%

- Salt fog, humidity and vessel rolling vibration cause ordinary coolers to corrode or crack

- Limited engine room space restricts installation of bulky separate air/water cooling units

- Retrofit projects struggle with mismatched mounting dimensions and inconsistent heat exchange performance

VRCOOLER provide Air & Water Cooled Heat Exchanger dedicated to marine transformers, delivering dual-circuit hybrid cooling to solve overheating risks of shipboard dry-type and oil-immersed transformers under harsh marine conditions.

Our tube-fin air-water heat exchanger adopts closed-loop forced air circulation matched with ship central cooling fresh water, forming a dual redundant cooling system:

1. Hot air heated by transformer windings circulates through the air side of the fin bundle

2. Fresh cooling water flows inside full stainless steel seamless tubes, absorbing heat via tube walls

3. Cooled clean air circulates back into the transformer cabinet for cyclic heat dissipation

4. If the water circuit malfunctions temporarily, the air cooling circuit works as backup to avoid emergency shutdown

All units pass full marine standard validation, complying with DNV, BV and ABS classification society requirements. Key structural upgrades include:

1. Corrosion-resistant core: SS304 / SS316L tube-fin assembly, anti-salt-fog coating on frame, resisting long-term marine damp and salt erosion

2. Anti-vibration reinforced frame: Welded thick steel structure with shock absorption pads, stable under vessel pitch, roll and impact loads

3. Compact modular layout: Customizable size to fit narrow engine room compartments, compatible with newbuilding and old vessel retrofit

4. Dual safety sealing: Multi-layer anti-leak gaskets separate air and water channels completely, eliminating short-circuit risks caused by water seepage

5. Easy maintenance design: Detachable fin assembly for quick high-pressure water cleaning to remove dust and marine deposits

VRCOOLER is a professional manufacturer of industrial & marine heat exchangers based in Changzhou, China. Our full product portfolio covers marine cooling equipment, power plant heat exchangers, and industrial drying waste heat recovery units. All products are manufactured under ISO quality control and certified by major marine classification societies. We provide OEM, ODM and customized thermal solution services for global clients via our official email [info@cstheatexchanger.com]