Jiangsu Shuoyun Petrochemical Equipment Co., Ltd.

The heat exchange mechanism of the stainless steel heat exchanger is based on the combined action of three basic heat transfer methods: conduction, convection and radiation. It achieves the heat transfer between cold and hot fluids through an inter-wall structure. The core of the equipment consists of heat exchange tubes and a shell. The hot fluid flows inside the tubes, while the cold fluid flows inside the shell and outside the tubes. Heat is transferred from the high-temperature side to the low-temperature side through the tube wall, completing the energy transfer.

Heat conduction is the core pathway for heat transfer. The heat conduction performance of stainless steel ensures that heat efficiently passes through the pipe wall. During the flow of cold and hot fluids, convective heat transfer occurs, and the temperature difference between the fluid and the pipe wall drives heat transfer. Turbulent flow disturbances can enhance the heat transfer effect of the boundary layer. Radiative heat transfer plays an auxiliary role in high-temperature conditions, supplementing the heat transfer by means of thermal radiation.

The structural design of the heat exchanger further optimizes the heat exchange efficiency. The baffles guide the shell-side fluid to form turbulence, increasing the contact area and time between the fluid and the tube wall. The arrangement of the tube bundles optimizes the flow path distribution, reducing flow dead zones and improving the overall heat exchange uniformity. The flow direction of the cold and hot fluids (parallel or counter-flow) affects the temperature distribution. Counter-flow arrangement can achieve a larger average temperature difference and improve the heat utilization rate.

In actual operation, fluid flow velocity, temperature difference, and heat exchange area are the key factors affecting the heat exchange effect. Increasing the flow velocity can enhance convective heat transfer, but it will increase the flow resistance and energy consumption; the temperature difference directly drives heat transfer, and reasonable control of the temperature difference can avoid local overheating or undercooling; the heat exchange area determines the total heat transfer capacity, and it needs to be matched and designed according to the working conditions requirements.