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 a coolant to dissipate heat. They can mainly be categorized as:Tube-in-tube cooler、Plate CoolerJapanese Style Cold Plate Cooler. The cooler isMetallurgy、Chemical Industry、EnergyTransportation, light industry, food, etc.Industrial SectorWidely adoptedHeat Exchanger Unit

II. Scope of Application

Suitable for various processes such as cooler, condensation, heating, evaporation, and waste heat recovery.

Section 3: Categories

Tube and Shell Cooler

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

Tube-in-tube coolerComposed of the outer shell and the internal cooler body. Due to varying structural designs, it is divided into pipe thread and flange connections externally; into horizontal and vertical installations; into floating disc and floating head types; into spiral tube and fin tube structures for the cooler tubes; and into various configurations such as arch baffle plates, rectangular baffle plates, double weir baffles, and circular baffle plates, all selected based on specific conditions.

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

Cooler body is composed of cooler tubes, fixed hole plate, moving hole plate, baffle plate, etc. The ends of the cooler tubes are connected to the fixed and moving hole plates. The cooler loader leaks engine oil inside; the fixed hole plate and the outer body.Flange connectionThe dynamic baffle disk can freely expand and contract within the outer body to eliminate the impact 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 bundle cooler enters through the header on the cylinder, sequentially flows through each bend passage, and twists to the header outlet. The cooler medium utilizes a two-pass flow, where the cooler medium enters through the inlet, passes through half of the cooler tubes via the water distribution cover, and then flows back into the other half of the cooler tubes through the return water cover, into another side water distribution cover and the outlet pipe. During the two-pass flow of the cold medium, it absorbs the excess heat released by the heat medium and discharges it through the outlet, maintaining the working medium at the rated operating temperature.

2. Plate Cooler

This panel type is available in V-shaped and diagonal wave patterns, utilizing ripple structures for contact points. This allows fluids to form turbulent flow even at low velocities, significantly enhancing the heat dissipation efficiency.

Plate Heat ExchangerIt is a new type of heat exchange equipment, featuring 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 oil, petrochemical, metallurgy, machinery, light industry, food, power, coating, and heating. In recent years, it has also been applied 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 (chilled 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 plates are at a constant temperature for heat transfer,

It includes three processes:

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

2) Heat conduction through the heat exchange plates

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

Air-cooled cooler

The third type of air-cooled cooler is also divided into various categories such as indirect, fixed, and suspended, etc. It boasts numerous features as well, with its simple structure, compact size and weight, and ease of use being among its strengths [3].

Air-cooled oil cooler (also known as an air cooler) is a type of cooler that uses air as its cooling source.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, utilizing 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. Additionally, for equipment that requires relocation (such as construction machinery), they eliminate the need to consider water supply, and there's no need for disassembly and reconstruction of a water circulation system, making them increasingly popular eco-friendly products.

Installation Method

Cooler installation methods are categorized as:Vertical Cold Oil CoolerAndHorizontal Cold Oil CoolerThe vertical cooler features a compact installation area and ease of installation. The horizontal cooler boasts lower pressure drop and strong resistance to water impact. Therefore, selecting the appropriate vertical or horizontal cooler based on specific site requirements, space height, and performance needs will better meet the needs of generator sets and other equipment.

CoolerPressure TestUpon qualification, the equipment may be put into use, and ensure the front is completely drained of internal water.

(2) Inspect if all drain and vent valves are functioning smoothly and easily operable, and ensure the gauge and thermometer are properly installed.

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

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

(5) When using cold or hot mediums, 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 operation. After the cooler is in use, leaks may occur due to changes in temperature and pressure, so inspections should be conducted promptly.