Abstract
Heat exchangers are used for a variety of purposes in various domestic, commercial& industrial applications. Some common examples are sensible heating & sensible cooling in chemical processes, condensation and steam generation in power plants, and recovery of waste heat etc. Heat exchangers performance enhancement can lead to more economical design of heat exchanger which increases energy, material & cost savings related to heat exchange process. Making corrugation on pipe surface is one such method. Numerous works has been carried out in this area, where parameters such as inside diameter of pipe, corrugation pitch, corrugation depth, temperature and phase of liquid has been studied. Corrugation of tubes can increase both the inner and outer surface convective heat transfer coefficient without any considerable rise in pressure drop. It also results in increase in mixing of fluid, flow turbulence, unsteadiness by limiting the fluid boundary layer growth adjacent to the tube surface.
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