What optimizations have been made to the copper pipes in the UC series evaporators?

The UC series evaporators have been comprehensively optimized in terms of copper pipe design, and the most core improvement is the use of a U-shaped heat exchange tube structure. In traditional straight tube evaporators, the refrigerant is prone to secondary uneven distribution due to gravity during the evaporation process, resulting in a decrease in heat exchange efficiency. The U-shaped heat exchange tube, with its unique structural advantages, allows the refrigerant to complete the evaporation cycle in a single pipe, avoiding the phenomenon of uneven refrigerant distribution. This design is particularly suitable for chillers with non-azeotropic refrigerants, which improves the overall heat exchange efficiency by more than 10% by improving the uniformity of heat exchange.

In addition, the U-shaped tube structure is outstanding in terms of compactness - only one tube sheet and one end cover are required to complete the assembly, which not only reduces material consumption, but also greatly reduces the workload of the tube expansion process. For later maintenance, the U-shaped tube heat exchange tube bundle can be designed as an independent and detachable module, which is convenient for regular cleaning or replacement of damaged parts, significantly improving the maintainability of the equipment.

At the manufacturing process level, the UC series evaporator further reduces costs and improves flexibility through innovations in coil bending technology. Traditional U-tube manufacturing requires bending the entire copper tube, while this series adopts the "coil straightening-bending" process, first straightening the coil into a straight tube, and then bending the U-tube of different lengths according to demand. This process not only simplifies the production process, but also allows the U-tube length to be flexibly adjusted according to the equipment size, completely breaking through the traditional process's limitation on tube length.

In order to ensure the reliability of the connection between the heat exchange tube and the tube sheet, the UC series evaporator introduces a V-groove expansion tube structure. The traditional tube expansion process requires a large deformation to achieve sealing, but it is easy to cause material fatigue. The V-groove design optimizes the contact surface geometry to form a reliable sealing force at a smaller tube expansion deformation. This structure not only improves the durability of the expansion tube connection, but also reduces the risk of sealing failure caused by long-term vibration, and is especially suitable for industrial applications with high load and high-frequency start-stop.

In terms of baffle design, the UC series evaporator uses a spiral baffle structure instead of the traditional bow baffle. The spiral baffles guide the fluid to flow along a spiral path, significantly increasing the turbulence of the fluid, thereby improving the heat exchange efficiency. At the same time, the spiral flow channel can reduce the deposition of impurities in the fluid and effectively inhibit scaling.