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Abstract
The conventional sources of energy have been depleting at an alarming rate that makes future sustainable development of energy use very difficult. The heat exchanger applications like refrigeration, aerospace, automotive, process industry, solar water heater, etc., where the heat transfer enhancement technology has been developed and widely applied. Heat transfer enhancement technology has been enhanced and widely applied to the various heat exchanger applications like refrigeration, aerospace, automotive, process industry, solar water heater, etc. By fitting with V-nozzles, the heat transfer in the circular tube could be promoted while it brings about the energy loss of the fluid flow. The increase in friction factor is much higher than the increase in Nusselt number at the same Reynolds number. The turbulence-promoter/turbulator devices such as Perforated Conical-Ring (PCR) is the one that are enhancing the heat transfer rate in a heat exchanger system. On the basis of thermal performance factor, the PCRs can enhance heat transfer more efficient than the typical Conical Rings (CR). With the rise of Reynolds number, the Nusselt number increases and the maximum heat transfer is obtained for the smallest pitch arrangement. In the proposed work, v-nozzle turbulators are used with and without perforated shape, circular holes and diamond holes for the forced convection of Reynolds number range 8000 to 20000. The proposed work uses the circular pipe fitted with the plain v-nozzle turbulators having PR=3, l=138mm and D=46 mm, the circular tube fitted with the perforated diamond shape v nozzle turbulators having two number of holes with D=46 mm, d=23 mm and the circular tube fitted with the circular perforated shape v nozzle turbulators having four number of holes with D=46 mm, d=23 mm. The objective of to the proposed work is to increase Thermal performance factor and reduced the friction factor by enhancing the heat transfer coefficient.
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