Marine Seawater Cooling And Refrigeration Systems

I. Core Parameter Specifications Cooling Capacity Range Commercial Models: 1 HP (approx. 2427W) to 5 HP (12kW+), suitable for marine aquaculture, vessels and fishing operations

1. Industrial Models: e.g. air-cooled twin-screw units with capacities up to hundreds of kilowatts, for large-scale seawater cooling systems

2. Temperature Control Accuracy Aquaculture: ±1°C (e.g., oyster farming requires 10–25°C maintenance)‌

3 4. Marine Aquarium Cooling: ±0.5°C (recommended 24–26°C)‌

5. Corrosion-Resistant Design‌ Evaporator Material: Pure titanium or stainless steel (e.g., Sensen UA-2.8DR model)‌

6 7. Secondary Coolant: Seawater or brine (calcium chloride solution, suitable for -40°C to 5°C)‌

8. Energy Efficiency Standards‌ Complies with GB/T18430.1 and other national standards; certain models achieve a COP (Coefficient of Performance) exceeding 3.5‌ 9 10. II. Operating Principle Heat Pump Technology‌ Utilises a four-component cycle (compressor, condenser, expansion valve, evaporator) to transfer heat via seawater temperature differentials‌ 6 9. Seawater serves as heat source/sink, interacting with refrigerant through heat exchangers to achieve cooling or heating‌ 6. Aquaculture Applications‌ Built-in pump draws seawater → chiller cools → returns to aquaculture tanks, forming closed-loop circulation‌ 3 4. Industrial models handle -30°C brine for seafood rapid freezing.

2. Aquarium cooling process Circulation pump feeds seawater into chiller tank → Compressor cools → Returned to main tank after cooling. 5 7. Recommended temperature differential: 2°C (e.g., start at 28°C, stop at 26°C) to minimise energy consumption. 5. III. Typical Model Comparison Type Application Features Reference Model Seawater heat pump air conditioner Building cooling/heating Energy-efficient, high COP Haier HCQ-185G 1 Industrial chiller Aquaculture/processing Corrosion-resistant titanium tubing, -30°C low-temperature Ferguson marine flake ice machine 11 Commercial Chiller Seafood Holding/Retail 1-5 HP, intelligent temperature control Sensen UA-2.8DR‌ 6 IV. Technical Extensions Reverse Flushing Function‌: Some industrial units support seawater reverse flow for heat exchanger cleaning (e.g., 'Yukun’ vessel system)‌ 12. Environmentally Friendly Refrigerants: R404A/R507 replace traditional R22, reducing ozone layer depletion 8 9. For detailed specifications or installation standards of specific models, please provide further application requirements.