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Numerical analysis of shell and tube heat exchanger with combination of different baffles
Case Studies in Thermal Engineering ( IF 6.4 ) Pub Date : 2024-12-15 , DOI: 10.1016/j.csite.2024.105658
Muhammad Waleed, Syed Murawat Abbas Naqvi, Hammad Mustafa, Mohammed K. Al Mesfer, Mohd Danish, Kashif Irshad, Hasan Shahzad
Case Studies in Thermal Engineering ( IF 6.4 ) Pub Date : 2024-12-15 , DOI: 10.1016/j.csite.2024.105658
Muhammad Waleed, Syed Murawat Abbas Naqvi, Hammad Mustafa, Mohammed K. Al Mesfer, Mohd Danish, Kashif Irshad, Hasan Shahzad
Shell and tube heat exchangers (STHXs) are special systems that transfer thermal energy, and they have a significant position in numerous industries. The structure and arrangement of baffles play a vital role in boosting heat transfer rate, increasing thermo-hydraulic performance, and reducing the pumping cost. The numerical study is based on computational fluid dynamics (CFD) to run and investigate 3-D turbulent flow in the STHXs and the thermal performances of two unique combinations of baffles. The combination of double and triple flower baffles (COMB-A) and the combination of triple and novel quadruple flower baffles (COMB-B) are compared with double flower baffle (DFB) and triple flower baffle (TFB). The numerical model of STHX with segmental baffles (SGB) shows promising results while validating it with the previously published results. In the same way, the thermo-hydraulic performances of DFB-STHX, TFB-STHX, COMB-A STHX, and COMB-B STHX are evaluated and then compared. Based on numerical results, the heat transfer rate of COMB-B STHX is greater than DFB-STHX by 6.80 % and 10.76 % than the TFB-STHX. The pressure drop on the shell side for two novels STHXs i.e. COMB-A STHX and COMB-B STHX is reduced by 7.74 %, and 9.39 %, respectively, as compared to DFB-STHX. The comprehensive performance of COMB-A STHX and COMB-B STHX is better than that of the STHX with common flower baffles by 4.16 % and 8.16 % respectively. On the shell side, the fluid flow behavior in COMB-A STHX and COMB-B STHX improves the interaction between cold and hot fluids to optimize thermo-hydraulic performance.
中文翻译:
不同挡板组合的管壳式换热器的数值分析
管壳式换热器 (STHX) 是传递热能的特殊系统,在许多行业中都占有重要地位。挡板的结构和布置在提高传热速率、提高热液压性能和降低泵送成本方面起着至关重要的作用。数值研究基于计算流体动力学 (CFD),用于运行和研究 STHX 中的三维湍流以及两种独特挡板组合的热性能。将双花挡板和三花挡板的组合 (COMB-A) 以及三花挡板和新型四花挡板的组合 (COMB-B) 与双花挡板 (DFB) 和三花挡板 (TFB) 进行了比较。带节段挡板 (SGB) 的 STHX 数值模型显示出有希望的结果,同时用以前发表的结果进行了验证。同样,对 DFB-STHX、TFB-STHX、COMB-A STHX 和 COMB-B STHX 的热液压性能进行了评估和比较。根据数值计算,COMB-B STHX 的传热速率比 DFB-STHX 大 6.80 %,比 TFB-STHX 大 10.76 %。与 DFB-STHX 相比,COMB-A STHX 和 COMB-B STHX 两种新型 STHX 的壳侧压降分别降低了 7.74 % 和 9.39 %。COMB-A STHX 和 COMB-B STHX 的综合性能分别比普通花挡板的 STHX 好 4.16 % 和 8.16 %。在壳侧,COMB-A STHX 和 COMB-B STHX 中的流体流动特性改善了冷流体和热流体之间的相互作用,从而优化了热液压性能。
更新日期:2024-12-15
中文翻译:
不同挡板组合的管壳式换热器的数值分析
管壳式换热器 (STHX) 是传递热能的特殊系统,在许多行业中都占有重要地位。挡板的结构和布置在提高传热速率、提高热液压性能和降低泵送成本方面起着至关重要的作用。数值研究基于计算流体动力学 (CFD),用于运行和研究 STHX 中的三维湍流以及两种独特挡板组合的热性能。将双花挡板和三花挡板的组合 (COMB-A) 以及三花挡板和新型四花挡板的组合 (COMB-B) 与双花挡板 (DFB) 和三花挡板 (TFB) 进行了比较。带节段挡板 (SGB) 的 STHX 数值模型显示出有希望的结果,同时用以前发表的结果进行了验证。同样,对 DFB-STHX、TFB-STHX、COMB-A STHX 和 COMB-B STHX 的热液压性能进行了评估和比较。根据数值计算,COMB-B STHX 的传热速率比 DFB-STHX 大 6.80 %,比 TFB-STHX 大 10.76 %。与 DFB-STHX 相比,COMB-A STHX 和 COMB-B STHX 两种新型 STHX 的壳侧压降分别降低了 7.74 % 和 9.39 %。COMB-A STHX 和 COMB-B STHX 的综合性能分别比普通花挡板的 STHX 好 4.16 % 和 8.16 %。在壳侧,COMB-A STHX 和 COMB-B STHX 中的流体流动特性改善了冷流体和热流体之间的相互作用,从而优化了热液压性能。