The heat transfer efficiency of a Coil Wound Heat Exchanger is closely related to multiple factors. The first is the physical properties of the heat exchange medium, such as specific heat capacity, thermal conductivity and viscosity. A medium with a large specific heat capacity and high thermal conductivity can transfer heat better. A high viscosity will reduce the fluid flow rate and affect heat transfer.
Secondly, the flow state of the fluid is also critical. When the fluid flows fast and is in a turbulent state, the thickness of the boundary layer can be reduced, and the mixing and heat transfer between the fluids can be enhanced; while when the flow rate is slow and in a laminar state, the heat transfer efficiency will be reduced. The structural design of the heat exchanger is equally important. The winding method, channel size, and heat transfer area will all affect the heat transfer efficiency. Reasonable channel design can increase fluid disturbance and improve the heat transfer effect.
In addition, the accumulation of dirt cannot be ignored. During the operation of the Coil Wound Heat Exchanger, impurities in the medium and dirt produced by chemical reactions adhere to the heat exchange surface, forming thermal resistance and hindering heat transfer. Regular cleaning of dirt can effectively maintain a high heat transfer efficiency.
