Convective heat transfer in a circular tube with short-length twisted tape insert

Eiamsa-ard, Smith; Thianpong, Chinaruk; Eiamsa-ard, P.; Promvonge, Pongjet

doi:10.1016/j.icheatmasstransfer.2009.01.006

Cited by 248 publications

(69 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some modified twisted tapes were designed to minimize pressure loss [1][2][3][4][5]. Patil [1] examined heat transfer and pressure drop characteristics of in tubes with varying width twisted tape inserts.…”

Section: List Of Symbolsmentioning

confidence: 99%

Heat transfer and thermal performance characteristics of heat exchanger tube fitted with perforated twisted-tapes

Thianpong

Eiamsa-ard

2011

Heat Mass Transfer

Self Cite

View full text Add to dashboard Cite

Twisted tape insert was applied as a swirling flow generator for the passive heat transfer enhancement in the present work. The influences of the perforated twisted tapes (PTs) on the heat transfer, pressure loss and thermal performance characteristics were investigated experimentally. The experiments were performed under uniform wall heat flux condition by using PTs with y/W = 3, 4 and 5, d/W = 0.11, 0.14 and 0.17 and s/W = 0.4, 0.6 and 0.8 where y is a twist length, d is a perforation hole diameter, s is a spacing between holes (pitch) and W is a tape width. The experimental results reveal that Nusselt number increased with decreasing s/W and y/W and increasing d/W. For the present range, the maximum heat transfer was obtained by utilizing the tape with s/W = 0.4, d/W = 0.17 and y/W = 3, which is higher than those obtained from the plain tube with and without typical twisted tape by around 27.4 and 86.7%, respectively. In addition, the empirical correlations for Nusselt number, friction factor and thermal performance are also proposed in the present paper.

show abstract

Section: List Of Symbolsmentioning

confidence: 99%

Heat transfer and thermal performance characteristics of heat exchanger tube fitted with perforated twisted-tapes

Thianpong

Eiamsa-ard

2011

Heat Mass Transfer

Self Cite

View full text Add to dashboard Cite

show abstract

“…They suggested that the v-nozzle turbulator inserts gives better results than that of other turbulator devices [11]. In the year 2009, S. Eiamsa-ard et al investigated on short length twisted tape inserts and showed that it enhances the heat transfer rate with respect to some parameters [12].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Heat Transfer in a Tubular Pipe Using Different Twisted Tape Inserts

Bhuyan¹,

Deb²,

Shahriar³

et al. 2017

OJFD

View full text Add to dashboard Cite

This paper performs a simulation study of the heat transfer phenomena in a tubular U-loop pipe. We have investigated the enhancement of heat transfer with mass flow in a pipe without insert, with full length and short length twisted tape inserts. The length of the pipe is approximately 2436.80 mm long with 29 mm inner and 33 mm outer diameter respectively. A constant heat flux is taken which generated the boundary layer of the pipe close to the flowing fluid around the boundary. The simulations are considered for the stationary and the time dependent module for 35 seconds with different length of inserts. The comparisons are made among the results. We observed that the transfer of heat is enhanced significantly with the increase of the length of inserts inside the computational domain. We also found that, full length twisted tape inserts are more effective than comparing with the short length inserts and without insert.

show abstract

“…Krishna et al [19] experimentally investigated the heat transfer characteristics in a circular tube fitted with straight full twist insert with different spacer distances. Influence of the tube equipped with the short-length twisted tape on Nu, f and thermal performance characteristics for several tape-length ratioswas examined by Eiamsa-ard et al [20]. The effect of twisted tape consisting wire-nails and plain twisted tapes with three different twist ratios fitted in a heat exchanger pipe using water as the test fluid on thermal characteristics was studied experimentally by Murugesan et al [21].…”

Section: Introductionmentioning

confidence: 99%

Review of Heat Transfer Augmentation by Using Twisted Tape Insert in Laminar Region

2017

IJAERD

View full text Add to dashboard Cite

Convective heat transfer in a circular tube with short-length twisted tape insert

Cited by 248 publications

References 13 publications

Heat transfer and thermal performance characteristics of heat exchanger tube fitted with perforated twisted-tapes

Heat transfer and thermal performance characteristics of heat exchanger tube fitted with perforated twisted-tapes

Simulation of Heat Transfer in a Tubular Pipe Using Different Twisted Tape Inserts

Review of Heat Transfer Augmentation by Using Twisted Tape Insert in Laminar Region

Contact Info

Product

Resources

About