Tubular 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 divided intoTube-in-tube cooler、Plate CoolerJapanese Style Air-Cooled Chiller. The chiller isMetallurgy、Chemical Industry、EnergyTransportation, light industry, food, etc.Industrial SectorWidely adoptedHeat Exchanger Unit

II. Applicable Scope

Suitable for various operating conditions including coolers, condensers, heating, evaporation, and waste heat recovery.

III. Categories

Shell and Tube Cooler

This hydraulic machine 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 intermediate baffle allows the oil to deflect, and its double or even quadruple flow pattern 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 forms; into floating disc and floating head floating types; into coil tube and finned 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 outer shell includes: cylinder, water-separation cover, and return cover. It features oil and water inlet and outlet pipes, as well as drainage and exhaust plug sockets, zinc rod mounting holes with temperature gauge interfaces, 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 oil leakage inside the cooler of the cooler loader; the fixed hole plate and the outer casing.Flange ConnectionThe dynamic baffle 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 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 passing through each baffle channel, and twists to the header outlet. The cooling medium, however, utilizes a two-pass flow, where the cooling medium enters half of the cooler tubes via the water inlet and baffle cover, then flows back into the other half of the cooler tubes through the return water cover and into the other side baffle 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 Cooler

This panel type is available in V-shaped and diagonal wave patterns, utilizing ripple structures for contact points. This arrangement creates turbulence in the fluid 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 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, chemicals, metallurgy, machinery, light industry, food, power, coating, and heating. In recent years, it has also been applied in the cooling water, pure water, and other fields of the microelectronics industry.Ultra-Pure Water SystemIt is also widely adopted in China.

Due to the refrigerant fluid (chilled water) andRecirculating Cooling WaterThe 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 with 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 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 plate during its flow.

2) Heat transfer process through the heat exchange plate.

3) Heat transfer by convection from the heat exchange fin wall to the chilled water (refrigerant fluid).

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 as well, including its simple structure, compact size and weight, and ease of use, all of which are its strengths [3].

Air-cooled oil cooler (also known as an air cooler) is a cooling unit 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, facilitating heat exchange via air. 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 severely damage the system. Additionally, for equipment that needs to be moved frequently (such as construction machinery), they eliminate the need to consider water supply and the dismantling and reconstruction of water circulation systems, making them increasingly popular eco-friendly products.

Installation Method

Cooling unit installation methods include:Vertical Cool 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 specific site conditions, space height, and performance requirements can better meet the needs of generators and other equipment.

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

(2) Check the operation and flexibility of all draining and vent valves, as well as the switch positions. Ensure that the pressure gauge and thermometer are fully installed.

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

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

(5) When using cold or hot mediums, first ensure the auxiliary line is clear, then slowly open the outlet valve, check for any issues, and then open the inlet valve. Always open it slowly to prevent pressure buildup. Monitor the equipment for any changes during the operation. After the cooler is put into use, leakage may occur due to changes in temperature and pressure, so it should be checked promptly.