Studi Eksperimental Perbandingan Efektivitas Shell and Tube Heat Exchanger dengan Variasi Single Baffle dan Double Baffle

Abstract

Energy has an important strategic position in the national economy. As the global population grows and welfare improves, the demand for energy is increasing, resulting in demand exceeding supply. Heat exchangers are one of the indispensable equipment in energy and power systems, which are widely used in various industrial fields. Among the types of heat exchangers, the most commonly used is the Shell and Tube Heat Exchanger (STHX), due to its low maintenance cost and robust structure. Therefore, optimizing or developing heat transfer technology, using heat exchangers, is an important concern that is beneficial for improving efficiency in the heat exchange process. In this research, the author tries to conduct a comparative experiment on the effectiveness of STHX by varying the baffle or baffle plate on STHX. The types of baffles that will be varied in this study are single segmental baffles and double segmental baffles. Based on the results of experimental analysis in this study, it is found that the effectiveness of shell and tube heat exchanger using single baffle at a distance of 15 cm, has the highest average effectiveness of 0.8 (80%), compared to shell and tube heat exchanger using double baffle with the same distance, where the average effectiveness is 0.58 (58%). The total heat transfer coefficient (U) of shell and tube heat exchanger using single baffle is 744.94, and shell and tube heat exchanger using double baffle has a heat transfer coefficient of 417.719. The type of baffle shell and tube heat exchanger that has the highest level of effectiveness at a distance of 15cm, based on the results of the analysis in this study, is a single baffle where the actual heat transfer rate (q) is 114415.96, effectiveness of 0.8 (80%), NTU of 0. 116 and a heat transfer coefficient of 744.94 W/m2.K, compared to a shell and tube heat exchanger using a double baffle which has an actual heat transfer rate (q) of 83003.156, an effectiveness of 0.58 (58%), an NTU of 0.057 and a heat transfer coefficient of 417.719 W/m2.K.