Air 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 agent to dissipate heat. They can mainly be categorized intoShell and Tube Cooler、Plate-type coolerJapanese-style Cold-Type Cooler. The cooler isMetallurgy、Chemical Industry、EnergyTransportation, light industry, food, etc.Industrial SectorWidely adoptedHeat Exchanger Unit

Section II: Applicability Scope

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

Section 3: Categories

Tube-Type Cooler

This hydraulic press 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 deflect, and its 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 classified into pipe threaded and flanged connections; into horizontal and vertical installation types; into floating disk and floating head styles; into spiral tube and fin tube cooler tube structures; and into various structures such as arch baffle plates, rectangular baffle plates, double weir baffle plates, and circular baffle plates, all selected based on specific conditions.

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

The 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 leak of engine oil inside the cooler of the cooler loader; the fixed hole plate 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-type cooler enters through the header on the cylinder, sequentially flows through each baffled passage, and曲折ly reaches 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 a dividing cover, and then flows into the other half of the cooler tubes through a return cover, to another dividing 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-groove and diagonal wave patterns, utilizing the ripple structure to arrange contact points. This allows fluids to form turbulence at relatively low flow rates, 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 footprint, and ease of installation. It can be conveniently combined into any flow form to meet different process requirements, thus being widely used in various industrial sectors such as oil, chemical, metallurgical, mechanical, light industry, food, electricity, coating, and heating. In recent years, it has 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 (cryogenic water) andRecirculating Cooling Water(Working fluid) does not come into direct contact; instead, the heat from the circulating cooling water is transferred to the chilled water through heat exchange plates. At this point, the circulating cooling water, which is at a higher temperature, is cooled down to become 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, where the working fluid (recirculating cooling water) transfers heat to the wall of the heat exchange plates during its flow.

2) Heat transfer through the heat exchange plates

3) Heat is transferred to the refrigerant fluid (chilled water) through convective heat transfer across the heat exchange fin 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, including its simple structure, compact size and weight, and ease of use, all of which are its strengths [3].

Air-cooled oil cooler (abbreviated as 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 body, offering a larger heat exchange area per volume and high thermal efficiency, facilitating heat exchange using air as the medium. 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 bursting copper pipes, which can cause severe damage to the system. Additionally, for equipment that needs to be moved to different work locations (such as construction machinery), they eliminate the need to consider water supply, and there is no need for dismantling and reconstructing a water circulation system, making them increasingly popular eco-friendly products.

Installation Method

Cooling unit installation methods include:Vertical Cool Oil CoolerAndHorizontal 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 approval, the equipment may be put into use, and all water inside the front should be drained.

(2) Check if all drain cocks and vent valves are operable and in the correct on/off positions, and ensure that the pressure gauge and thermometer are fully installed.

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

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

(5) When using cold or hot medium, ensure the auxiliary line is clear first, then slowly open the outlet valve. After confirming there are no issues, open the inlet valve slowly to prevent overpressure. Pay attention to observing equipment changes during the operation. After the cooler is put into use, leakage may occur with changes in temperature and pressure, so it should be checked promptly.