Double-sided delta-wing tape inserts to enhance convective heat transfer and fluid flow characteristics of a double-pipe heat exchanger

2018 ◽  
Vol 145 ◽  
pp. 27-37 ◽  
Author(s):  
Agung Tri Wijayanta ◽  
Indri Yaningsih ◽  
Muhammad Aziz ◽  
Takahiko Miyazaki ◽  
Shigeru Koyama
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Heat Exchanger ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Delta Wing ◽  
Flow Characteristics ◽  
Fluid Flow Characteristics ◽  
Double Pipe ◽  
Pipe Heat

Application of Genetic Algorithm-Polynomial Neural Network for Modelling Heat Transfer and Fluid Flow Characteristics of a Double-Pipe Heat Exchanger

2013 ◽  
Author(s):  
Mehdi Mehrabi ◽  
Tuhid Pashaee ◽  
Mohsen Sharifpur ◽  
Josua P. Meyer
Keyword(s):  
Neural Network ◽  
Heat Transfer ◽  
Genetic Algorithm ◽  
Fluid Flow ◽  
Heat Exchanger ◽  
Flow Characteristics ◽  
Primary Data ◽  
Polynomial Neural Network ◽  
Fluid Flow Characteristics ◽  
Double Pipe

In this paper a genetic algorithm-polynomial neural network approach is used in order to model the effect of important parameters on heat transfer as well as fluid flow characteristics for a double-pipe helical heat exchanger by using numerical-certified results. In this way, overall heat transfer coefficient (Uo), inner and annular pressure drop (ΔPin, ΔPan) are modeled with respect to the variation of inner and annular dean number, inner and annular Prandtl number, and pitch of coil which are defined as input (design) variables. The numerical-certified data was randomly divided into test and train sections which the former is used for benchmark. The GA-PNN structure was instructed by 75 percent of the numerical-validated data. 25 percent of the primary data which had been considered for testing procedure were entered into GA-PNN proposed models and results were compared by statistical criteria.

scholarly journals Performance Enhancement of Double Pipe Heat Exchanger with Helical Fin and Vortex Generator using CFD

2019 ◽  
Vol 9 (2) ◽  
pp. 2677-2681
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Water Vapour ◽  
Food Processing ◽  
Heat Exchangers ◽  
Performance Enhancement ◽  
Delta Wing ◽  
Vortex Generator ◽  
Double Pipe ◽  
Pipe Heat

Transferring heat from one fluid to another fluid without losing of major energy is a challenging task in the food processing and other industries. Double Pipe Heat Exchanger (DPHE) are light capacity Heat Exchangers (HE) used for air and other gas applications. In the present work an attempt is made to enhance the heat transfer of DPHE with helical fins and vortex generator. The working fluids are air and steam (water vapour) along outer and inner pipes. The parameters considered are helix angles, i.e. 350 , 400 , & 450 and pitch size i.e. 80 mm, 75 mm and 70 mm, and a vertex generator. CATIA V5 and Autodesk CFD are used for modelling and analysis. It is found that 400 angle helix fin 70 mm pitch along Delta Wing type (Triangular) vortex generator (VG) gives best performance

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