the various parameters which influence the heat exchanger performance. It is
evident that the effectiveness of shell and tube heat exchanger is having high potential value of impact on the overall
performance of the furnace among the various parameters. From this interpretation, the effectiveness of the present
heat exchanger was found to be 0.61.[16] Recommends that prior to the enhancement of the processing stages, process capability should be thoroughly measured to identify the path for improvement. Hence, the PCA for heat exchanger effectiveness was plotted to facilitate the current level of Six Sigma. The PCA clearly explains that, the current sigma level of the shell and tube heat exchanger as 1.34 by engendering PCA curvature using the MINITAB 16 software. Hence, the effectiveness of the heat exchanger must be improved to meet the customer expectation and accentuate the sigma level of the shell and tube heat exchanger.