Authors : Jawdat Ali Yacoob, Ehsan Fadhil Abbas and Murad Nihad Mardan
Abstract: This research aimed to study the effect of 0.1 M of HCl, H2SO4 and NaCl solutions at 61°C on the 2 4 thermal performance and corrosion behavior of commercially pure copper tubes in the used Shell and Tube Heat Exchanger (STHE). The tests are performed with a counter-flow arrangement for 120 h. The flow rates for the tube side solution (aqueous solution) and shell side solution (tap water) adjusted and kept constant at 150 and 50 L h-1, respectively. According to the obtained results, the greater decrease in thermal performance is observed in HCl solution than in H2SO4 solution and finally in NaCl solution with a decrease in percentage ε were (11.6, 10.1 and 6.9), respectively. Besides, the results of visual inspection of the interior tubes walls degradation and variation of the used aqueous solution characteristics are showed that the HCl acid solution is more corrosive than H2SO4 acid and NaCl salt solutions. The XRD analysis results revealed that the corrosion 2 4 products are formed by more than one reaction mechanism and formed different hydrated and complex corrosion products.
Jawdat Ali Yacoob, Ehsan Fadhil Abbas and Murad Nihad Mardan, 2017. Effect of Some Factors on the Thermal Performance of Shell and Tube Heat Exchanger. Journal of Engineering and Applied Sciences, 12: 715-721.