In recent years, it has been widely used in automotive radiators.

Tube-belt copper radiators Automotive radiators are mostly copper and aluminum. Copper is the best metal material for thermal conductivity, and it has excellent moldability, solderability, and corrosion resistance. It has long been The preferred material for automotive radiators, but copper resource issues and price issues have been the main reason for the application of copper radiators. Due to its advantages of light weight, low cost, and abundant resources, aluminum has been widely used in automotive radiators in recent years. However, due to its complicated process and poor corrosion resistance, it is applied to only a small engine such as a car. There are different types of automotive radiator cores. Currently, there are mainly tube cooling tubes, tube bands, and cell types. The tube type is used in the experiment as a tube type copper automobile radiator.

Oscillating flow heat pipe Auto radiator Oscillating flow heat pipe There are two basic types of structure: closed loop structure and open loop structure. The small diameter and repeated bending of the hot and cold ends are two basic conditions for the formation of an oscillating flow heat pipe. The oscillating flow heat pipe also has the following basic features: No wick needed; There can be multiple heating sections and cooling sections; the adiabatic section is optional; no external force is required and self-oscillating; surface tension dominates, but gravity also affects Heat transfer performance; self-oscillating working fluids transmit latent heat and sensible heat at the same time. The oscillating flow heat pipe radiator adopts a copper pipe with an outer diameter of 4mm and a wall thickness of 0.5mm, and has an open circuit structure. In order to avoid impurities or dirt release non-condensable gas damage the vacuum degree of the tube, hinder the capillary effect, the pipeline is cleaned in advance, degreasing, and then hand-bending using a special bending pipe die, using the vacuum pump to pre-pump the pipeline Under low vacuum, use a diffusion pump to pump high vacuum and flush into medium ethanol. The heating section of the heat pipe is placed in the water tank, and the heat dissipation section is outside the water tank. The heat pipe and the partition are brazed and welded, and the strength of the partition is strengthened by welding the metal slats. In this way, the connection between the heat pipe and the water tank is not only sealed but also resistant to high temperatures and the pressure is high.