Impact of Heat Shield Thickness on Performance of Roll through Simulation
Nalla Shivaprasad1, U.S. Jyothi2

1Nalla shivaprsad*, Mechanical Engineering Department, GRIET, Hyderabad, India.
2Dr.U.Sjyothi, Mechanical Engineering Department, GRIET, Hyderabad, India.
Manuscript received on November 20, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 3105-3109 | Volume-9 Issue-2, December, 2019. | Retrieval Number:  B3891129219/2019©BEIESP | DOI: 10.35940/ijeat.B3891.129219
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Abstract: Rolls of the packing machine undertakes an imperative job in packing industries. So as to decrease the power input and reducing the heat dissipation rate, there are numerous methodologies, for example, surface coatings, surface boronizing and with heat shields and so forth. This work is expected to reduce the power contribution to heaters by diminishing the heat dissemination rate utilizing heat shields with simulation of different thicknesses. There is a decrease of dissipation of heat by using Stainless steel 316 Ti (0.7 mm thickness) heat shields and there is a reduction of 13.9% in power input, 28% time saving and14% in heat dissipation rate is noticed when compared to standard rolls up to steady surface temperature where there is saving of 198W per hour in power after steady temperature. Hence an attempt is being made for improving results that are obtained from experiments by using simulation through ANSYS steady state thermal analysis. From the results it is inferred that as thickness of heat shield increases the input electrical energy for the heater goes on reducing and results shows that 0.7 mm thickness shield is 4.28% efficient than 0.8 mm heat shield. Further through simulation optimum thickness is was observed. But thickness is restricted to 1mm only because of machine specification complexity. Further the results of simulation for varying thickness are presented with contours of temperature distribution and heat flux.
Keywords: Roll, Heat Shield, Heaters and Shield thickness, Simulation.