Baffle is commonly used to improve the performance of the shell and tube heat exchangers. In this research, effect of the baffle spacing to the performance of a shell and tube heat exchanger has been examined experimentally. The length and diameter of the shell of the heat exchanger is 500 mm and 60 mm, respectively. The number of the tube is 4. The inner and outer diameter of the tube is 13.8 mm and 15.8 mm, respectively. The different baffle spacing 71 mm, 55 mm and 45 mm were used and the number of baffles were varied from 6, 8,10 respectively. The hot water mass flow rate was fixed to 4.5 Litres/min and cold-water mass flow rate was varied from 6,9,12,15 Litres/min. Using the experimental data heat transfer coefficient, Nusselt number, effectiveness has been evaluated. The results showed that effectiveness Increased when the baffle spacing decreased. The maximum increment of heat transfer coefficient for 10 no of baffle was 144.02% with respect to without using baffle and 53.13% with respect to 6 no of baffle with volume flow rate of 15 litres/min.
Effect of Baffle Spacing on Shell Side Heat Transfer Enhancement of a Shell and Tube Heat Exchanger
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