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Table 1 Review the most important twisted tape investigations that began in the turbulent field

From: Assessment of twist tape thermal performance in heat transfer passive augmentation technique

Wijayanta and Mirmanto [13]

Water

NRe 4500–18,500

–

Short lenth twisted tapes inserts with twisted ratio 0.25, 0.5, 0.75 and 1

The friction factor and NNu were found to be 0.51 and 2.84 times higher than the simple tubes, respectively

Saha et al. [14]

Water

NRe 5000–43,000

NPr 4–5.5

Twist ratio is 3.18 to ∞

Twist tapes that were spaced evenly were superior to full length twist tapes

Kunlabud et al. [15]

Air

Nre 5000–15,000

–

Twisted tapes With loose fit multi-channel

The simple tube's heat transfer rates have been improved

Ahmadet al. [16]

Water

NRe 5000–16,000

–

Swirling Perforated Twisted Tape Insert

Heat transfer is easier with partially perforated twisted tape than with completely perforated twisted tape

Ganorkar and Warkhedkar [17]

 

NRe 5000–22,000

–

Elliptical-cut twisted tapes inserts with twist ratio 8. And major- minor axis compositions 5, 4, 3.3, 3 and 2.5

With a decreasing major to minor axis ratio, NNu and friction factor in the tube with elliptical-cut twisted tape increase

Eiamsa-ard et al. [18]

Nanofluid TiO2/Water

NRe 5400–15,200

–

Overlapped dual twisted tapes. With twist ratio 1.5, 2.0 and 2.5

With decreasing overlapped twist ratio, Nusselt number and friction factor increased

Yaningsih et al. [19]

Water

NRe 5400–17,500

–

Twisted tape Twist tape ratio 3.97 and twisted tape with perforated axial pitch ratio 0.56, 0.87 and 1.19

Twisted tape inserts with perforations have more successful than twisted tape inserts without perforations

Yaningsih et al. [20]

Water

NRe 5400–17,350

–

V cut twisted tapes insert with different width ratio 0.32, 0.38, and 0.48

Heat transfer and thermal efficiency improve when the width is reduced

Sivakumar and Rajan [21]

Water

NRe 5710–18,366

–

Triangular cut twisted tapes twist ratio 5.4. And depth of triangular cut 1.2 cm

Triangular cut twisted tapes outperform plain twisted tapes by 1.1–1.3 times

Yaningsih and Wijayanta [22]

Water

NRe 5800–18,500

–

Twisted tapes using wing with diff axes Triangular-wing chord ratio 0.31 Trapezoid-wing span ratio 0.23 Twist ratio 3.8

As compared to plain tube, the heat transfer rate increased by 1.91 times and the friction factor improved by 5.2 times

Naga Sarada et al. [23]

Air

NRe 6000–13,500

–

Twist tapes width from 10–22 mm. With twist ratio 3, 4 and 5

Inserts boost heat transfer by 36–48% as compared to plain heat transfer for maximum width. It was 33–39% for reduced width

Eiamsa-Ard [24]

Air

NRe 6000–20,000

–

Circular-ring turbulators with pitch ratio (l/D = 1.0,1.5 and 2) and twisted tape with twist ratio 3, 4, 5

When Pitch ratio 1 and Twist ratio 3 are combined, the effect is better than when they are used separately

Abdolbaqi et al. [25]

 

NRE 7200–32,400

–

Twin counter twisted tapes and twin co- twisted tapes with twist ratio 5, 10 and 15

The heat transfer rate of counter twisted tapes was 22.5% higher than that of co twisted tapes

Hong et al. [26]

Air

NRe 8000–22,000

–

twin overlapped twisted tapes counter large and small combinations with twist ratio 1.06, 1.56, 2.44 and 3.22

When the overlapped twisted ratio was reduced, NNu and friction factor increased

Lopina and Bergles [27]

Water

NRe < 8 × 103 to 1.3 × 105

–

full length twist tapes

The rate of heat transfer has accelerated by 20%

Kreith and Sonju [28]

Water

NRe < 10 × 103 to 1 × 105

–

Twisted tapes

Tube length tapes perform 25–45% better than full-length tapes

Salam et al. [29]

Water

NRe 10,000–19,000

–

Rectangular-cut (depth 8 mm and width 14 mm) twisted tape with twist ratio 5.25

Twisted tapes with a rectangular cut improve performance by 2.3–2.9 times as compared to smooth tubes

Liao and Xin [30]

Water, Ethylene glycol and Turbine oil

NRe 80–500,000

NPr 5.5–590

twisted tape and three dimensional extended surfaces

As compared to a smooth tube, a tube with three dimensional extended surfaces and twisted tape increased average NSt by 5.8 times

Sivashanmugam and Suresh [31]

Water

NRe

–

Helical screw- tape insert with increasing and decreasing order

Empirical correlation is validated

Arunachalam and Edwin[32]

Al2O3–Cu/water Hybrid nano fluid (Peclet number 2580to 11,780)

–

–

V-cut twisted tape inserts and plain twisted tapes inserts

Simple twisted tape inserts with V-cut twisted tape inserts have a better heat enhancement than plain twisted tape inserts. Hybrid fluid has a heat transfer coefficient of 25.8% higher than water

Al-Fahed et al. [33]

Oil

–

–

Twisted tape with twist ratio 3.6, 5.4, 7.1

Low twist ratio means less pressure drop and more heat transfer

Ujhidy et al. [34]

Water

–

–

Twisted tapes

The flow structure was defined

Sivanshanmug-am and Sunduram [35]

Water

–

–

Twisted tapes with twist ratio 8.54, 5.882, 4.95 and 4.149

Tape-generated swirl flow has thermo-hydraulic characteristics. More efficient when the twist ratio is high