Oil Cooler

Product Details

I. Definition

Coolers are a type of heat exchange equipment used for cooling fluids. They typically use water or air as the cooling medium to dissipate heat. They can mainly be divided intoShell and Tube Cooler、Plate-type coolerJapanese-style Cold Plate Cooler. The cooler isMetallurgy、Chemical Industry、EnergyTransportation, light industry, food, etc.Industrial SectorWidely adoptedHeat Exchanger Unit

Section II: Applicability Range

Suitable for various operating conditions such as coolers, condensation, heating, evaporation, and waste heat recovery.

Section 3: Categories

Tube-in-tube cooler

This hydraulic cooler comes in various types, including double-tube, vertical, horizontal, and floating head configurations. Its feature is that the cooling water flows through the tubes internally, while the oil passes through the gaps between the tubes. The baffles in the middle allow the oil to zigzag, and its double or even quadruple flow pattern enhances its cooling effect significantly.

Shell and Tube CoolerComposed of the outer shell and the internal cooler body. Due to different structural methods, it is divided into pipe thread and flange connections externally; into horizontal and vertical installations; into floating disk and floating head styles; into coiled tube and finned tube structures for the cooler tubes; and into various structures such as arch baffles, rectangular baffles, double weir baffles, and circular baffles based on the baffle design. All are selected according to specific conditions.

The outer shell includes: cylinder, water-dividing cover, and return water cover. It is equipped with oil inlet and outlet pipes, as well as water inlet and outlet pipes. It also features drain oil, drain water, exhaust plug, zinc rod mounting holes connected to a thermometer interface, and more.

Cooler body is composed of cooler tubes, fixed hole plates, moving hole plates, baffle plates, etc. The ends of the cooler tubes are connected to the fixed and moving hole plates. There is a leakage of engine oil inside the cooler of the cooler loader; fixed hole plate and outer body.Flange connectionThe moving baffle plate can freely expand and contract within the outer body to eliminate the effects of temperature on the cooler tubes due to thermal expansion and contraction. The baffle plate serves to enhance heat transfer and support the cooler tubes.

Principle

The heat medium of the tube-type cooler enters through the header on the cylinder, sequentially passes through each bend channel, and twists to the header outlet. The cooling medium utilizes a two-pass flow, where the cooling medium enters half of the cooler tubes via the inlet water port and then flows back into the other half through the return water cover, to another side water cover and outlet pipe. During the two-pass flow process, the cold medium absorbs the excess heat released by the heat medium and discharges it through the outlet, maintaining the rated working temperature of the working medium.

2. Plate-type cooler

This panel type is available in V-groove and diagonal wave patterns, utilizing ripple-structured contact points to create turbulence in the fluid at relatively low flow rates, significantly enhancing the heat dissipation efficiency.

Plate Heat ExchangerA new type of heat exchange equipment with high heat transfer efficiency, compact structure, small land occupation, and easy installation, it can be conveniently combined into any flow form according to different process requirements. Therefore, it is widely used in various industrial fields such as petrochemical, chemical, metallurgy, machinery, light industry, food, electricity, coating, heating, and in recent years, in the cooling water and pure water systems of the microelectronics industry.Ultra-pure Water SystemIt is also widely adopted in China.

Due to the refrigerant fluid (cryogenic water) andRecirculating Cooling Water(Working Fluid) does not come into direct contact; they transfer heat from the circulating cooling water to the refrigerant water through heat exchange plates. At this point, the circulating cooling water, which is at a higher temperature, is cooled down to become a low-temperature fluid. When the fluids on both sides of the heat exchange plate are at a constant temperature for heat transfer,

It encompasses three processes:

1) The heat transfer process by convection during the flow of circulating cooling water (working fluid) to the wall of the heat exchanger plate.

2) Heat transfer process through the heat exchange plate.

3) Heat transfer by convection to the refrigerant fluid (chilled water) through the heat exchange fin wall on the other side.

Air-cooled cooler

The third type of air-cooled cooler also comes in various versions, such as indirect, fixed, and suspended, etc. It boasts numerous features, including its simple structure, compact size and weight, and ease of use, all of which are its strengths [3].

Air-cooled oil cooler (shortened to air cooler) is a cooling unit that utilizes air as the cooling medium.Aluminum alloy plateFinned heat exchangers feature oil and air channels with heat exchange fins in the core, offering a larger heat exchange area per volume and high thermal efficiency, with air as the medium for heat exchange. Compared to water-cooled radiators, they are not only easier to install and maintain but also prevent the mixing of oil and water due to burst copper pipes, which can cause severe damage to the system. Moreover, for equipment that requires relocation (such as construction machinery), there's no need to consider water supply, and there's no need to dismantle and reconstruct a water circulation system, making them increasingly popular eco-friendly products.

Installation Method

Cooling unit installation methods are categorized as:Vertical Oil CoolerAndHorizontal Cold Oil CoolerThe vertical cooler features a small required installation area and easy installation. The horizontal cooler has characteristics such as lower pressure drop and strong resistance to water impact. Therefore, selecting the appropriate vertical or horizontal cooler based on different site requirements, space height, and performance needs can better meet the needs of generator sets and other equipment.

ChillerPressure TestUpon qualification, use the product and empty the internal water from the front.

(2) Check the operation and flexibility of all drain and vent valves, and verify that the switches are in the correct positions. Ensure that all pressure gauges and thermometers are properly installed.

(3) Inspect the base and support for stability, and ensure all bolts are fully engaged and tightened.

(4) When in use, first introduce cold flow, then hot flow.

(5) When using cold or hot media, ensure the auxiliary line is clear first, then gradually open the outlet valve. After confirming there are no issues, open the inlet valve slowly to prevent pressure build-up. Monitor the equipment for any changes during the startup process. After the cooler is in use, leaks may occur due to changes in temperature and pressure, so timely inspections should be conducted.