Numerical Study on Heat transfer and Pressure Drop Characteristic in Double Pipe Heat Exchanger

Amalia, Rif’ah; Safitra, Arrad Ghani; Elby, Alvin Christian

doi:10.1109/ies50839.2020.9231664

Cited by 1 publication

(1 citation statement)

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“…It was found that the effectiveness and Nusselt number were enhanced by enhancing the Reynolds number. On the other hand, the friction factor was reduced by enhancing the Reynolds number in the pipes (Amalia, Safitra, & Christian Elby, 2020).…”

Section: Introductionmentioning

confidence: 99%

The effect of pipe development length on flow characteristics in a larvae killing system: Screening the dilute phase by CFD

Mohammadzadeh

Shahgholi

Fanaei

et al. 2022

J Food Process Engineering

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Optimal design of conveying path can be lead to decrease the reverse flow and blockage in the conveying processes. In the present study, the effects of four different initial pipe lengths of 190, 380, 570, and 760 mm in the larvae killing machine were evaluated, comprehensively. The numerical calculations were conducted by computational fluid dynamics. Also, the Discrete Phase Model (DPM) and Reynolds Stress Model (RSM) were utilized to model the solid–gas interactions and turbulence of the flow, respectively. According to the results, the minimum pressures drop resulted in configuration III with 159 Pa. A negative pressure field was created in the interior radius of the second elbow, which is due to the enhancement of velocity in this area and an enhancement in dynamic pressure. Moreover, the maximum and minimum vorticity magnitudes were obtained in configurations I and III, respectively. Finally, considering all conditions, configuration III was chosen as the best configuration. Practical Application The larvae killing machine is utilized to eliminate larvae from whet during conveying. The appropriate design of the piping system is a critical subject in this field. One of the powerful methods for designing the conveying system is computational fluid dynamics. The results of the study can reduce the pressure drop and increase the efficiency of the system and provide uniform conveying in this machine.

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Section: Introductionmentioning

confidence: 99%