Heat Transfer and Pressure Drop Characteristics in Turbulent Flow Through a Tube

Bhuiya, M.M.K.; Ahamed, Jamal Uddin; Sarkar, Mrinmoy; Salam, Bodius; Masjuki, H.H.; Kalam, M.A.; Saidur, R.; Sayem, A.S.M.

doi:10.1080/08916152.2011.623819

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…The experimental set up used for the present study was same as that used in Bhuiya et al [17,20] for triple helical tape inserts and perforated strip inserts, respectively, and is explained in this section. The experimental facility consists of an inlet section, a test section, an air supply system (electric blower), and a heating arrangement.…”

Section: Methodsmentioning

confidence: 98%

“…Wazed et al [19] experimentally studied the enhancement of heat transfer in turbulent flow through tube with perforated twisted tape inserts and found a significant enhancement of heat transfer at the cost of increased pumping power. Bhuiya et al [20] experimentally studied the heat transfer and pressure drop characteristics in turbulent flow through a tube with perforated rectangular strip inserts.…”

Section: Introductionmentioning

confidence: 99%

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Performance of Turbulent Flow Heat Transfer Through a Tube With Perforated Strip Inserts

Bhuiya

Ahamed

Sarkar

et al. 2013

Heat Transfer Engineering

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An experimental study was conducted to evaluate the performance of heat transfer for turbulent flow through a tube using air as the working fluid with perforated rectangular strip inserts. Mild steel rectangular strips of different pore diameters 2. 1, 3.2, 4.25, 5.3, and 7.42 mm with corresponding porosities of 1.1%, 2.5%, 4.4%, 6.8%, and 13.3%, respectively, were used in the flow field. Heat transfer and pressure drop data were taken for Reynolds numbers ranging from 14,000 to 47,000. The experimental results showed that the Nusselt number, heat exchanger effectiveness, and friction factor were higher than those of the plain tube. The Nusselt number and the friction factor for employing the perforated strip inserts were found to be increased up to 2.65 and 1.75 times, respectively, over the corresponding plain tube. The heat transfer performance was evaluated and found to be 2.5 times higher compared to the plain tube based on the constant blower power. Finally, a correlation was developed with the experimental data for prediction of heat transfer in turbulent flow through a tube with perforated rectangular strip inserts.

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Section: Methodsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Performance of Turbulent Flow Heat Transfer Through a Tube With Perforated Strip Inserts

Bhuiya

Ahamed

Sarkar

et al. 2013

Heat Transfer Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…The heat transfer enhancement techniques are broadly divided into two categories such as: active method which needs an external power source and the passive method which does not need any external power source. The passive technique method mainly involves the use of twisted tapes, wire coil inserts, and helical screw tapes in the ducts leading to the increase in the heat transfer rate [2][3][4][5][6][7][8]. In such a case, the heat transfer rate increases because of various reasons, namely, decrease in hydraulic diameter, the increase in the length of the flow path due to helical configuration of twisted tape, the increase in the shear stress at wall and tube leading to improvement in fluid mixing.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Heat Transfer Enhancement of Low Volume Concentration of Al2O3–Water and Carbon Nanotube–Water Nanofluids in Laminar Regime Using Helical Screw Tape Inserts

Chougule

Sahu

2013

Journal of Nanotechnology in Engineering and Medicine

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An experimental study has been carried out to evaluate the heat transfer and friction factor characteristics of helical screw inserts in Al 2 O 3 -water and carbon nanotubes (CNT)-water nanofluids through a straight pipe in laminar flow regime with constant heat flux boundary condition. Tests have been performed by using 0.15% volume concentration Al 2 O 3 -water and CNT-water nanofluid with helical tape inserts of twist ratio (TR) ¼ 1.5, 2.5, and 3. The helical screw tape inserts with CNT-water nanofluid exhibits higher thermal performance compared to Al 2 O 3 -water nanofluid. The maximum enhancement in heat transfer was obtained for CNT-water nanofluid with helical tape inserts of TR ¼ 1.5. The increase in pressure drop of Al 2 O 3 -water nanofluid with helical screw tape inserts is found to be higher compared to CNT-water nanofluid with helical screw tape inserts at lower value of TR. For both the nanofluids (CNT-water and Al2O3-water), the thermal performance factor was found to be greater than unity for all TRs.

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“…The heat transfer enhancement techniques are broadly divided into two categories, namely, the active method which needs an external power source, and the passive method, which does not need any external power source. Among various passive techniques, twisted tapes, wire coil inserts, and helical screw tapes have mostly been used in ducts because of its higher efficiency in the improvement of heat transfer rate [2][3][4][5][6][7][8]. The improvement in heat transfer rate by using twisted tape may be due to various reasons, namely, the decrease in hydraulic diameter, the increase in the length of the flow path due to helical configuration of twisted tape, the increase in the shear stress at wall, and the tube leading to improvement in fluid mixing.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Heat Transfer Enhancement of Low Volume Concentration of Al₂o₃–Water and Carbon Nano-Tube–Water Nano-Fluids in Transition Regime Using Helical Screw Tape Inserts

Chougule

Sahu

2014

Experimental Heat Transfer

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This study reports the comparison of heat transfer and friction factor characteristics of helical screw inserts in Al 2 O 3 -water and carbon nano-tube-water nano-fluids through a straight pipe in transition regime with constant heat flux boundary condition. Experiments were carried out by using 0.15% volume concentration of Al 2 O 3 -water and carbon nanotube-water nano-fluid with helical tape inserts of twist ratio, TR 5 1.5, 2.5, and 3. The thermal performance of helical screw tape inserts with the carbon nano-tube-water nanofluid is found -to be higher when compared to the Al 2 O 3 -water nano-fluid. In addition, the maximum enhancement in heat transfer was obtained for the carbon nano-tube -water nano-fluid with helical tape inserts of twist ratio 1.5. The increase in pressure drop of the Al 2 O 3 -water nano-fluid with helical screw tape inserts is found to be higher compared to the carbon nano-tube -water nano-fluid helical screw tape inserts at lower value of twist ratio.

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Heat Transfer and Pressure Drop Characteristics in Turbulent Flow Through a Tube

Cited by 8 publications

References 13 publications

Performance of Turbulent Flow Heat Transfer Through a Tube With Perforated Strip Inserts

Performance of Turbulent Flow Heat Transfer Through a Tube With Perforated Strip Inserts

Comparative Study on Heat Transfer Enhancement of Low Volume Concentration of Al2O3–Water and Carbon Nanotube–Water Nanofluids in Laminar Regime Using Helical Screw Tape Inserts

Comparative Study on Heat Transfer Enhancement of Low Volume Concentration of Al₂o₃–Water and Carbon Nano-Tube–Water Nano-Fluids in Transition Regime Using Helical Screw Tape Inserts

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Heat Transfer and Pressure Drop Characteristics in Turbulent Flow Through a Tube

Cited by 8 publications

References 13 publications

Performance of Turbulent Flow Heat Transfer Through a Tube With Perforated Strip Inserts

Performance of Turbulent Flow Heat Transfer Through a Tube With Perforated Strip Inserts

Comparative Study on Heat Transfer Enhancement of Low Volume Concentration of Al2O3–Water and Carbon Nanotube–Water Nanofluids in Laminar Regime Using Helical Screw Tape Inserts

Comparative Study on Heat Transfer Enhancement of Low Volume Concentration of Al2o3–Water and Carbon Nano-Tube–Water Nano-Fluids in Transition Regime Using Helical Screw Tape Inserts

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Product

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Comparative Study on Heat Transfer Enhancement of Low Volume Concentration of Al₂o₃–Water and Carbon Nano-Tube–Water Nano-Fluids in Transition Regime Using Helical Screw Tape Inserts