Amit Kumar Sharma, O. P. Jakhar, Mohd. Yunus Sheikh
In this paper we have proposed and analyzed a new parallel-flow shell and tube heat exchanger with clamping plate baffles and sinusoidal wavy tapes. We have employed the response surface methodology (RSM) method to investigate the turbulent heat transfer performance of a new parallel-flow shell and tube heat exchanger with clamping plate baffle (CPB) and sinusoidal wavy tapes (STHX-CPBSWT). 25 CFD runs are adopted to study the effect of four parameters (tape pitch, tape amplitude, tape width and Re) on thermal-hydraulic performance based on central composite design of RSM. MATLAB 9.1 as a simulation tool has been used for implementing the equation and for the designing of STHX-CPBSWT system. The flow structures are shown and the heat transfer mechanism is revealed. The results show that the sinusoidal wavy tapes make the fluid flow in a wavy manner and induce many distinct longitudinal swirling vortexes than the conventional round rod baffle, CPB and equilateral triangle cross sectioned wire coil. The sinusoidal wavy tape can enhance heat transfer as effectively as the equilateral triangle cross sectioned wire coil does in turbulent regime. In the investigated range, the average Nu, f and PEC of STHX-CPBSWT are 2.2%, 25.2% and 0.5% larger than those of STHX-CPBETWC respectively
Parallel-Flow; Shell And Tube Heat Exchanger; Sinusoidal Wavy Tape; Heat Transfer; RSM