Views: 0 Author: Site Editor Publish Time: 2026-05-06 Origin: Site
What is the working principle of an oil-to-freshwater heat exchanger?
An oil-to-freshwater heat exchanger is a liquid-liquid heat exchange device that uses fresh water to cool lubricating oil/hydraulic oil. The core principle is to transfer the heat from the oil to the fresh water, ensuring the oil and water remain immiscible. It is commonly used in ships, engines, and hydraulic power units.
Working Principle: High-temperature oil (such as lubricating oil or hydraulic oil) flows counter-currently/cross-currently with low-temperature fresh water, transferring heat through metal pipe walls/plates.
The oil and water are completely isolated and circulate independently; the fresh water absorbs heat and carries it away, achieving oil temperature control.
Application Scenarios:
Ships: Main engine/auxiliary engine lubricating oil cooling, hydraulic oil cooling (fresh water closed-loop circulation).
Engine/Generator Sets: Oil coolers for industrial diesel engines and gas turbines.
Hydraulic Systems: Oil temperature control in injection molding machines, construction machinery, and rolling mill hydraulic power units.
Industrial Processes: Lubricating/hydraulic oil cooling for gearboxes, compressors, and turbines.
