Cooler manufacturers bring you a comprehensive understanding of the cooler
Coolers are a type of heat exchange device used to cool fluids. Water or air is usually used as a coolant to remove heat. There are wall coolers, spray coolers, jacketed coolers and serpentine coolers. It is widely used as a pure water, water wind, oil water and oil air cooling device for high-power silicon rectification and induction furnaces and medium frequency furnaces.
The cooler is mainly composed of a partition wall, hybrid and regenerative exchanger. The working principle of the cooler, heat transfer calculation, structural calculation, flow resistance calculation and design procedure are more illustrated in the heat exchanger book. And detailed examples.
The first type of hydraulic machine cooler is a tubular type, which has two layers of tubular, vertical, horizontal, and floating head types. This type of feature is that the water used for cooling flows through the inside of the tube, and the oil flows through the interval between the tubes. The centrally placed flaps allow the oil to flow. The dual-city or even four-way activity method is used. Its cooling effect is more intense.
The tubular cooler consists of two parts, an outer casing and an inner cooler body. Due to the different structural methods, the external connection method is divided into pipe thread type and flange type; from the equipment method, it is divided into horizontal type and vertical type; from the floating method, it is divided into floating type and floating type; from the cooler The pipe structure is divided into a spiral tube type and a fin tube type; the structure of the baffle is divided into a bow baffle, a rectangular baffle, a double-bend baffle and a circular baffle, and the like. Specific conditions are selected.
The outer casing includes a cylinder body, a water separation cover, and a water return cover. It is equipped with inlet and outlet pipes and inlet and outlet pipes to understand the rules of Baccarat, and is equipped with oil drain, drainage, exhaust screw plug, zinc rod device hole and thermometer interface.
The cooler body is composed of a cooler tube, a fixed orifice plate, a moving orifice plate, a baffle plate and the like. The two ends of the cooler tube are connected with the fixed and moving hole plates, and the oil is leaked inside the cooler of the cooler loader; the fixed hole plate and the outer body flange are connected, and the moving hole plate can be freely elastic in the outer body to eliminate the temperature due to the heat of the cooler tube. The effect of expansion and contraction. The baffles act to enhance heat transfer and support the cooler tubes.
The heat medium of the tubular cooler is received by the receiving inlets on the cylinder, and sequentially flows through the respective baffling passages to the receiving outlets in a meandering manner. The cooler medium uses double tube activity, that is, the cooler medium enters the half cooler tube through the water inlet cover through the water inlet cover, and then flows from the return water cover into the other half cooler tube to enter the other side water separation cover and outlet pipe. . In the process of double tube flow, the residual heat released by the absorption heat medium is discharged from the water outlet, so that the working medium adheres to the rated working temperature.
The second type of plate is also divided into a herringbone and a diagonal corrugated type. The touch point placed by the corrugated structure allows the fluid to form a turbulent flow at a low flow rate, which greatly improves the heat dissipation effect.
The plate type heat exchange device is a new type of high-efficiency heat exchange device. It has high heat transfer efficiency, compact structure, small footprint, easy equipment benefit, and can be easily combined into a pleasant flow method according to different process requirements. Therefore, it is widely used in petroleum, chemical, metallurgy, machinery, light industry, food, medicine, electric power, painting, heating and other industrial fields. In recent years, in the cooling water, pure water and ultrapure water systems of microelectronics operations. Also widely used.
Since the chilled water (refrigerant fluid) and the circulating cooling water (working fluid) are not directly touched, they transfer the heat of the circulating cooling water to the chilled water through the heat exchange sheet, and at this time, the temperature of the circulating water of the higher temperature is lowered. a cryogenic fluid, when the fluid at both ends of the heat transfer fin is a constant temperature heat transfer,
It consists of three processes:
1) convective heat transfer process that transfers heat to the heat transfer fin wall during the circulating cooling water (working fluid) activity;
2) the heat conduction process through the heat exchange sheet;
3) Convective heat transfer from the heat transfer sheet wall on the other side to the chilled water (refrigerant fluid).
Air cooled cooler
The third type of air-cooled coolers are equally classified into direct type, fixed type, and suspended type. It also has many features, its simple structure, small size and small weight and the use of convenience are its advantages.
The air-cooled oil cooler (referred to as the air cooler) is an aluminum alloy plate-fin heat exchanger with air as a cooling source, and is characterized in that the oil passage and the air passage of the core of the heat exchanger are provided with heat exchange fins. The same volume ratio is larger than the heat exchange area, the heat transfer efficiency is high, and the air is used as a medium for heat exchange. Compared with the water-cooled radiator, not only the maintenance of the equipment is concise, but also the mixing of oil and water formed by the bursting of the copper tube is prevented, which seriously damages the system. Secondly, equipment for demand conversion operation addresses (such as construction machinery) does not need to consider the supply of water source, and there is no disassembly and reconstruction of the water circulation system. It is an increasingly environmentally friendly product.
The above is the cooler manufacturer to bring you all the contents of the cooler