Experimental studies of a double-pipe helical heat exchanger

Rennie, Timothy J.; Raghavan, Vijaya

doi:10.1016/j.expthermflusci.2005.02.001

Cited by 124 publications

(46 citation statements)

References 13 publications

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“…Numerical studies of helically coiled double pipe heat exchangers have also been carried out. Such a heat exchanger was numerically modelled for laminar fluid flow and heat transfer characteristics were studied by Rennie and Raghavan (2005). They have modelled the heat transfer from hot fluid to cold fluid using the CFD package PHOENICS 3.3 and found out the overall heat transfer coefficients for counter-current and parallel flows.…”

Section: Numerical Experimentsmentioning

confidence: 99%

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Experimental and CFD estimation of heat transfer in helically coiled heat exchangers

Jayakumar

Mahajani

Mandal

et al. 2008

Chemical Engineering Research and Design

367

115

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Section: Numerical Experimentsmentioning

confidence: 99%

“…However, the case of fluid-fluid heat exchange has not been studied well. Experimental studies of a double pipe helical heat exchanger was conducted by Rennie and Raghavan (2005). The double pipe helical coil heat exchanger was further numerically investigated by Rennie and Raghavan (2006a,b).…”

Section: Introductionmentioning

confidence: 99%

Experimental and CFD estimation of heat transfer in helically coiled heat exchangers

Jayakumar

Mahajani

Mandal

et al. 2008

Chemical Engineering Research and Design

367

115

View full text Add to dashboard Cite

“…Timothy J. Rennie, Vijaya G.S. Raghavan [2]Have done An experimental study of a double-pipe helical heat exchanger. Two heat exchanger sizes and both parallel flow and counter flow configurations were tested.…”

Section: IImentioning

confidence: 99%

Review on Comparative Study between Straight Tube Heat Exchanger and Helical Coil Heat Exchanger

Samant¹

2018

IJRASET

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The main purpose of this study is to determine the relative advantage of using a helically coiled heat exchanger over a straight tube heat exchanger. It is found that the heat transfer in helical circular tubes is higher as compared to Straight tube due to their geometrical shape. Helical coils offer advantages over straight tubes due to their compactness and increased heat transfer coefficient. The increased heat transfer coefficients are a consequence of the curvature of the coil, which induces centrifugal forces to act on the moving fluid, resulting in the development of secondary flow. The curvature of the coil governs the centrifugal force while the pitch (or helix angle) influences the torsion to which the fluid is subjected to. The difference in velocity sets-in secondary flows. The fluid particles flowing at the core of the pipe have higher velocities than those flowing near to the pipe wall. Thus the fluid particles flowing close to the tube wall experience a lower centrifugal force than the fluid particles flowing in the tube core. This causes the fluid from the core region to be pushed towards the outer wall. This additional convective transport increases heat transfer and the pressure drop when compared to that in a straight tube.

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“…While the exit energy is energy that can be taken by the cold fluid is commonly called secondary fluid . So the efficiency of the heat exchanger system is formulated as follows [9] : ɳ = …”

Section: Theorymentioning

confidence: 99%

Investigate the Heat Exchanger Efficiency of Hydraulic Liquid by using the Beta Test Loop

Rajab

2017

Tikrit j. eng. sci.

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The aim of this paper is to determine the performance of the heat exchanger system using the hydraulic fluid . Investigation of heat exchanger system efficiency has been done versus the flow rate on the BETA test loop. This system can be used for investigation the hydraulic thermal changing. The Sequences on this system consist of a heat exchanger circuit that serves as a heat degree reducing from the primary part to the secondary part .The test method is carried out by operating the heat exchanger system with some variations of fluid flow rate in the primary part. The efficiency of system has been determined by comparing the energy value in the primary inlet to the energy value taken out form outlet by a secondary. Obtained results indicates that the increasing of fluid flow rate in the primary part from 3.86x10 -4 m 3 /s to 8.23x10 -4 m 3 /s cause a reduction in the efficiency of the heat exchanger system of about 82% to 74%.

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Experimental studies of a double-pipe helical heat exchanger

Cited by 124 publications

References 13 publications

Experimental and CFD estimation of heat transfer in helically coiled heat exchangers

Experimental and CFD estimation of heat transfer in helically coiled heat exchangers

Review on Comparative Study between Straight Tube Heat Exchanger and Helical Coil Heat Exchanger

Investigate the Heat Exchanger Efficiency of Hydraulic Liquid by using the Beta Test Loop

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