External spiral steel works

Whatever the mechanical equipment has their own works, how it works is to allow us to better understand its work, and our awareness of it. Spiral steel pipe is a pipe commonly used in construction, then there is a outside spiral Pipe seldom been learned.

External spiral steel pipe is rolled tubes or other processing methods in its inner and outer spiral pattern formed on the surface of a highly efficient heat transfer tubes. External spiral steel pipe strengthen the role of the media outside the clothing aspect medium flows through the shell externally threaded tube surface, the outer thread edge layer-to-layer flow generated disturbance, thinning of the boundary layer thickness, on the other hand reflects the increased heat transfer area external thread; combined result, so that the tube has a high heat transfer when the external spiral steel pipe for evaporating when the unit can increase the number of bubble formation on the surface, to improve the boiling heat transfer, to further reduce resistance and improve the condensation heat transfer efficiency.

Spiral steel fluid flowing inside and outside the inner spiral pattern by obstacles and guide the fluid hampered and guided along the spiral pattern rotating part only; another part of the fluid from the outer spiral axial flow. Inner spiral pattern projection of the cis rotating helical spiral fluid shock fluid flowing axially outer edge. former boundary layer thinning beneficial effect; role of the latter axially outer spiral heat exchange fluid flowing in the other heat exchange area larger than the original tubes and process heat transfer area and processes, which can speed up the body wall to fluid heat transfer. combined result of two effects, the effect of heat transfer tube has been strengthened.