Intermediate cooler

Product Details

I. Definition

Coolers are a type of heat exchange equipment used for cooling fluids. They typically use water or air as coolants to dissipate heat. They can mainly be divided intoShell and Tube Cooler、Plate-type coolerJapanese Style Air-Cooled Chiller. The chiller isMetallurgy、Chemical Industry、EnergyTransportation, light industry, food, etc.Industrial sectorWidely adoptedHeat Exchanger Unit

II. Applicability Scope

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

Section 3: Categories

Tubular cooler

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

Shell and Tube CoolerComposed of the external shell and the internal cooler body. Due to varying structural designs, it is categorized into pipe thread and flange connection types externally; into horizontal and vertical installation types; into floating disc and floating head floating types; into helical tube and finned tube cooler tube structures; and into various structures such as arch baffles, rectangular baffles, double weir baffles, and circular baffles based on the cooler tube's baffle design. All are selected according to specific conditions.

The external shell includes: the 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 oil and water drain plugs, zinc rod mounting holes with temperature gauge interfaces, and more.

Cooling body is composed of cooler tubes, fixed hole disks, moving hole disks, baffle plates, etc. The ends of the cooler tubes are connected to the fixed and moving hole disks. There is oil leakage inside the cooler of the cooler loader; the fixed hole disk and the outer casing.Flange connectionThe dynamic hole plate 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 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 passing through each baffled channel, and曲折ly flows to the header outlet. The cooling medium utilizes a two-pass flow, where the cooling medium enters half of the cooler tubes through the inlet, then flows back through the return cover into the other half of the cooler tubes, entering the other side's water distribution cover and 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-style cooler

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

Plate Heat ExchangerA novel heat exchange equipment with high heat transfer efficiency, compact structure, small footprint, and easy installation. It can be conveniently assembled into any flow form to meet different process requirements. Therefore, it is widely used in various industrial fields such as oil, chemicals, 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 widely adopted in China as well.

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 chilled water through heat exchange plates. At this point, the circulating cooling water, which is at a higher temperature, cools 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 which the working fluid (recirculating cooling water) transfers heat to the wall of the heat exchange plate.

2) Heat transfer process through the heat exchange plate;

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

Air-cooled cooler

The third type of air-cooled cooler is also divided into various types such as indirect, fixed, and suspended, etc. It boasts numerous features as well. Its simple structure, compact size and weight, and ease of use are all advantages [3].

Air-cooled oil cooler (shortened to air cooler) is a type of cooler that uses air as the 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 heat transfer 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 oil-water mixing caused by burst copper pipes, which can severely damage the system. Moreover, for equipment that needs to be moved frequently (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 follows:Vertical Cold Oil CoolerAndHorizontal Cold Oil CoolerVertical coolers feature a small required installation area and easy installation. Horizontal cool oilers have characteristics such as lower pressure drop and strong resistance to water impact. Therefore, selecting the appropriate vertical or horizontal cool oiler based on different site conditions, space height, and performance requirements can better meet the needs of generator sets and other equipment.

CoolerPressure TestUpon qualification, the equipment may be put into use, and ensure the front tank is fully drained.

(2) Check if all drain and vent valves operate smoothly and are in the correct on/off positions, and ensure that all pressure gauges and thermometers are properly installed.

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

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

(5) When using chilled or heated mediums, ensure the auxiliary line is clear first, then gradually open the outlet valve. After confirming no issues, open the inlet valve slowly to prevent pressure build-up. During the startup process, monitor the equipment for any changes. After the cooler is operational, leakage may occur with temperature and pressure changes, so it should be inspected promptly.