Abstract:

For the purpose of heat transfer enhancement, the configuration of a shell-and tube heat exchanger was improved by considering the baffle spacing and baffle cut. The investigation in this paper was carried by manual calculations, and that performed for a single shell and two tubes passes heat exchanger, with variable number of baffles spacing and 25% baffle cut. Designed baffle spaces are: for case A: 382 mm, for case B: 427 mm, for case C: 472 mm, and for case D: 517 mm. In our paper we obtained shell side calculations using Kern method and the results were observed on shell side, the heat transfer coefficient decreases by 15.3% and pressure losses decreases by 49.4%. General design considerations and design procedure that follows TEMA standard are also considered in this paper. Also, a commercial HTRI Xchanger Suite software was also used for design drawing purposes.