Shell and Tube Heat Exchanger Used for Oil Cooling

Product Introduction

Shell-and-tube heat exchanger used for oil cooling is a heat exchange device specially designed to exchange heat between oil-based fluids (such as lubricating oil and heat transfer oil) and another fluid.

Working Principle

High-temperature oil typically flows through the inside of the heat exchange tubes, while the cooling medium (such as water, ethylene glycol solution, or air) circulates on the shell side, transferring heat from the oil to the cooling medium through the tube walls. Depending on project requirements, the oil can also be designed to flow on the shell side. This design, based on counter-current, parallel, or cross-flow arrangements, ensures a highly efficient heat exchange process.

Core Structure

1. Shell: A large cylindrical outer shell housing the tube bundle. Hot oil typically flows in the shell side.
2. Tube Bundle: Composed of multiple tubes (copper, stainless steel, or titanium, etc.), through which the cooling medium flows.
3. Tube Sheets: Secure the tube bundle at both ends and isolate the shell-side and tube-side fluids.
4. Baffles: Installed on the shell side, they guide the hot oil to repeatedly sweep across the tube bundle, enhancing turbulence, significantly improving heat transfer efficiency, and supporting the tube bundle to prevent vibration.
5. Header/Channel: Located at both ends of the heat exchanger, they distribute and collect the cooling medium from the tube side. They can be designed as multi-pass systems (e.g., 2 or 4 passes) to increase cooling water velocity and heat exchange time.

Key Features

Efficient Heat Transfer: The heat transfer coefficient can reach up to 800-1200 W/(m²·K), effectively improving heat exchange efficiency.
Easy to Clean: The tube bundle adopts a floating head with removable core design, allowing cleaning without disassembling the pipeline.
Customized Interface Configuration: We offer ANSI/DIN/JIS standard interfaces, eliminating the need for adapter fittings.
Dual Sealing: The tube sheet is fully welded with a mechanical seal combination, with a leakage rate of <0.1ml/h.

Application Areas

1. Petrochemical industry: Widely used for oil cooling in petroleum refining processes.
2. Power systems: Used for oil cooling in power plants, ships, and heavy machinery.
3. Automotive industry: Used as part of the oil cooling system in engines and transmissions.
4. Food processing: Suitable for cooling certain edible oils.

Delivery and Logistics
Delivery Time: Depends on the order size; under normal circumstances, goods can be shipped within 90 days.
Packaging: Wooden crates or steel frame packaging, with the equipment body wrapped in anti-rust film, and flange faces protected by cover plates.
Shipping Ports: Shanghai Port and Ningbo Port.

Quality Assurance
Manufacturing Standards: GB150 / GB151 / ASME / PED
Certification: ISO9001 certified
Production Equipment: Large rolling machines, plasma arc welders, automatic tungsten inert gas (TIG) welders, large pulse forming equipment, automatic polishing machines.
Testing Equipment: Pressure testing equipment, X-ray flaw detectors, ultrasonic flaw detectors, material analysis laboratory, weld quality inspection equipment.

FAQ

Q: How to select the material for the heat exchange tubes in oil heat exchangers?
A: Commonly used materials are copper tubes (high efficiency, moderate cost) or stainless steel tubes (high temperature resistance, corrosion resistance). The choice depends on the type of oil, temperature, and corrosiveness.

Q: What physical properties of the oil should be provided for customizing an oil heat exchanger?
A: The oil's name, density, viscosity (at operating temperature), specific heat capacity, thermal conductivity, flash point, maximum operating temperature, and fouling factor should be provided.

Q: Does your company provide complete solutions for oil cooling systems or lubrication stations?
A: Yes, we offer complete designs and integration for oil cooling or lubrication stations, including heat exchangers, oil pumps, filters, valves, and control systems.

Q: How can the price discount for bulk purchasing oil heat exchangers be negotiated?
A: Bulk purchases allow for the dilution of raw material procurement and manufacturing costs. We will offer tiered price discounts based on the order volume.

Q: How is the fixing of internal components (such as baffles) ensured to prevent loosening under oil flow impact?
A: Multiple fixation methods such as support rods, welding seams, and anti-loosening nuts are used to prevent loosening and vibration.

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