Product Advantages
WINDINGSTRUCTURE,TURBULENCE EFFECT
With a reverse-wound, spiral-rising coil structure and countercurrent heat transfer, it creates a strong turbulent flow effect. Both [Wound Pipe Condenser] bundles and shells are made of stainless steel, featuring uniform expansion coefficients. With a maximum temperature of 400°C, it will not deform under pressure and temperature fluctuations, eliminating the need for a pressure reduction device.
HIGH HEAT TRANSFER EFFICIENCYAND ENERGY SAVINGS
[Wound Pipe Condenser] features tube bundles up to 3–5 times the shell length. Layer and tube spacing are precise, while adjacent layers are wound in opposite directions. This structural design causes the fluid to continuously change direction as it flows through the tube side and shell side, generating strong turbulence and significantly boosting heat transfer efficiency.
Typically, the heat transfer coefficient of domestic heat exchangers is around 2,000–3,000 W/(m·°C). In contrast, under specific operating conditions, the wound tube heat exchanger achieves a heat transfer coefficient of up to 14,000 W/(m²·°C).
In hot water applications, this design enables steam to fully condense within the tube bundle, eliminating the need for secondary heat exchange and thus saving substantial amounts of steam.
COMPACT SIZE,EASY TO INSTALL AND MAINTAIN
It features a compact structure and easy installation, with a volume of only about 1/5 that of comparable domestic shell-and-tube heat exchangers, thus saving space and reducing infrastructure investment. Lightweight and easy to install, dismantle, and clean, the equipment can be directly connected to the piping, reducing installation costs, along with initial setup and ongoing maintenance expenses.
Industry Cases
CHEMICALINDUSTRY
In chemical production, it is often necessary to heat or cool reactants to a specific temperature range. As efficient heat exchangers, spiral-tube heat exchangers meet the chemical industry's requirements for temperature control and heat transfer.
At a certain refinery, due to the full reflux renovation of the stripping tower, the heat transfer efficiency of the floating-head heat exchanger atop the pre-fractionation tower within the continuous reforming unit's pre-treatment system decreased during operation, which failed to meet heat transfer requirements. This not only resulted in energy waste but also led to increased overall energy consumption in the unit, impairing its long-term stable operation.
After replacing it with a U-shaped coil-tube heat exchanger, the hot-end temperature difference decreased from 54°C to 43°C. This not only resolved the issue of insufficient cooling capacity in the pre-fractionation tower top cooler but also eliminated safety hazards in the oil storage tank. Additionally, this replacement increased the inlet temperature of the pre-hydrogenation feed heat exchanger, reduced the load on the furnace heater, and lowered energy consumption.
Following the renovation, the payback period has been only three months, yielding significant operational and economic benefits.
FOOD INDUSTRY
In the food processing industry, spiral-tube heat exchangers are applicable for heating or cooling materials-for instance, in milk pasteurization and juice concentration processes. Their hygienic characteristics and corrosion resistance enable them to meet the hygiene standards required for food processing.
Industrial aseptic low-temperature filling is an advanced beverage production technology that has been widely adopted by leading beverage manufacturers. For the aseptic water systems in this process, plate-type heat exchangers are the most commonly used option. While these plate-type units are cost-effective, their heat transfer efficiency is relatively low in this specific application. Furthermore, they need to be paired with additional cooling and pressure reduction equipment.
Notably, the considerable temperature differences between the heating, preheating, and cooling sections of plate-type heat exchangers can lead to deformation of their plates. If a leak occurs due to such deformation, it may cause recontamination of the sterilized water-ultimately undermining product quality and reducing production efficiency.
In contrast, Ukada's spiral-tube heat exchanger is especially well-suited for gas-liquid heat exchange scenarios. Replacing the original plate-type units with this spiral-tube model brings distinct upgrades: it reduces steam consumption to lower energy costs, and its ability to withstand high temperatures and high pressures effectively alleviates thermal shock issues. Overall, this replacement has proven to be a successful equipment upgrade.
Company Advantages
Developed by Germany's Linde in 1895, the spiral-tube heat exchanger was initially used for air liquefaction equipment in chemical production. Today, after decades of continuous refinement and innovation, this type of heat exchanger has found widespread application across industries such as chemicals, petroleum, food, and energy & power generation.
Suzhou Ukada Energy-Saving Technology Co., Ltd. is an innovative tech firm specializing in the R&D, production, and sales of energy-efficient heat exchangers. Its product portfolio covers spiral-tube, spiral-plate, tubular, silicon carbide, and double-tube-sheet variants.
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