Copper tube aluminum fin heat exchanger for marine cruise ship heating equipment

Copper Tubes

Purpose: Serves as an internal flow channel, carrying high-temperature heat transfer media (hot water/steam/hot oil).

1. Why Copper Tubes?

Excellent Corrosion Resistance: The marine environment is characterized by high salt content and humidity, making it extremely corrosive. Compared to ordinary steel, copper tubes offer superior resistance to seawater and salt spray corrosion, making them the preferred material for marine equipment.

High Thermal Conductivity: Efficiently transfers heat from the heat transfer media to the aluminum fins and air.

High Strength and Pressure Resistance: Able to withstand the pressures of heating systems, especially when using steam as the heat transfer media.

Good Ductility: Easily processed into the desired coil shape and offering excellent vibration resistance, making them suitable for use on ships at sea.

2. Aluminum Fins

Purpose: Tightly fitted around the outside of the copper tube, their core function is to significantly increase the heat transfer area and enhance heat transfer efficiency on the air side.

Why Aluminum Fins?

Lightweight: Aluminum’s low density significantly reduces equipment weight, which is crucial for a ship’s load and balance.

Excellent thermal conductivity: Second only to copper, it is a highly cost-effective fin material.

Cost-effectiveness: While maintaining performance, the “copper tube + aluminum fin” combination (rather than all copper) effectively controls costs.

Surface treatment: Aluminum fins are typically treated with a hydrophilic coating or anti-corrosion coating to further enhance their corrosion resistance and prevent condensation and dripping.

3. Heat Exchanger

Functional Positioning: Its role is clearly defined as a wall-type heat exchanger. Two media (heat medium and air) are separated by a metal wall and heat is exchanged through the solid wall without contact.

Operating Mode: It functions as a heater. In contrast to the previously discussed evaporator (which absorbs heat), it is a heat-dissipating element.

4. Dedicated for Marine/Cruise Ship Heating Equipment

Application Scenario: This heat exchanger is not intended for ordinary civilian or industrial use and must be designed and manufactured to meet marine standards.

Core Requirements:

Salt Spray Corrosion Resistance: All materials and surface treatments must be resistant to corrosion from the marine atmosphere.

Vibration and Shock Resistance: The structural design must be robust, capable of withstanding the long-term vibration and occasional shock caused by the ship’s engines and waves.

High Reliability and Safety: Onboard ships, maintenance is extremely difficult, so the equipment must be highly reliable. Furthermore, it must be leak-proof and have a high safety level.

Compact Design: Space is at a premium onboard ships, so the equipment must provide maximum heat transfer per unit volume, requiring a compact design.

Adaptability to Multiple Heat Sources: The equipment must be compatible with the various heat sources used on cruise ships, such as hot water heated by engine waste heat, steam generated by boilers, or high-temperature hot oil.

• 
• 
• 

This high-reliability heating system is specially designed for the harsh marine environment. It features a compact structure featuring corrosion-resistant, pressure-bearing copper tubes and efficient heat conduction aluminum fins. It uses hot water or steam flowing through the copper tubes as a heat source, and a fan drives air across the fins to generate warm air. It is designed to provide stable and comfortable central heating for living spaces on cruise ships. All design and material selection prioritize marine standards, particularly corrosion resistance and vibration resistance.

Factory Showcase