Experimental Studies on Heat Transfer Performance of Double Pipe Heat Exchanger with using Baffles and Nanofluids

Singh, Swati; Singh, Gurpreet; Singla, Amit

doi:10.17485/ijst/2016/v9i40/101486

Cited by 11 publications

(8 citation statements)

References 6 publications

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“…Recently, many researchers [8,10,12,15,18,24,25,26,27,48] twisted tape inserts in diverse heat exchanger to enhance desirable parameters such as heat transfer rate and thermal performance efficiency. Some major studies of the influence of twisted tape inserts in the presence of nanofluid are summarized in Table 1.…”

Section: The Impact Of the Combination Of Twistedmentioning

confidence: 99%

An Effect of Twisted Tape with Nanofluid on the Performance of Double Pipe Heat Exchanger, A Comprehensive Review

Singh¹,

Tjprc²

2019

IJMPERD

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The phenomenon of heat transfer is employed in numerous applications such as refrigeration, airconditioning, food processing, etc. Heat exchangers are used for efficient heat transfer and therefore, the performance of a heat exchanger is important. Cutting edge, innovative and cost-effective techniques are required to achieve efficient heat transfer. Twisted tape (TT) inserts which is a type of passive heat transfer enhancement technique are widely researched. This article delivers an assessment on diverse types of TT in double pipe heat exchangers with different nanofluids. The influence of tape inserts with nano fluids on thermal performance factor (η), Nusselt Number (Nu), friction factor (f) and rate of heat transfer are comprehensively discussed. Application of twisted tape inserts were demonstrated to be more useful in laminar flows w. r. t. turbulent flows. On the contrary, when solid nanoparticles were employed with a high value of φ, heat transfer rate was better in turbulent flows than in laminar flows.

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Section: The Impact Of the Combination Of Twistedmentioning

confidence: 99%

An Effect of Twisted Tape with Nanofluid on the Performance of Double Pipe Heat Exchanger, A Comprehensive Review

Singh¹,

Tjprc²

2019

IJMPERD

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“…They noted a significant improvement in HTC with more concentration. Singh et al 17 analyzed a DPHE with baffles imparted in the annular side. They used CuO nanofluids and reported 8% and 12% enhancement in Nusselt numbers with and without baffles.…”

Section: Introductionmentioning

confidence: 99%

Counterflow HE analysis of Cu and SiO₂ nanofluids in the developing flow region

Sai¹,

Lahari²,

Sharma

et al. 2022

Heat Trans

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Three concentrations of 0.2, 0.6, and 1.0 vol.% Copper/25 nm and silica/22 nm nanofluids are prepared in a base liquid glycerol–water mixture of 30:70 ratio by volume (GW70). The thermophysical properties of Cu and SiO2 nanofluids are determined with a TPS500S hot disc thermal analyzer and Brookfield viscometer in the temperature range of 20–80°C. The maximum enhancement in Cu and SiO2 nanofluid viscosity (63.4%, 35.7%), thermal conductivity (100.4%, 71.3%), and density (7.5%, 1.5%) while specific heat (7.8%, 2.3%) determined for 1.0% concentration at 80°C compared to base liquid GW70. Heat transfer experiments are conducted in a short‐length double pipe heat exchanger. The flow rates resulted in the lamifnar entry length region. A maximum enhancement in the overall heat transfer coefficient (HTC; 25.0%, 19.7%) and convective HTC (46.2%, 34.8%), respectively for Cu and SiO2 nanofluids is estimated at 1.0% concentration compared to base liquid at a bulk temperature of 35°C.

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“…The performance was determined by using heat exchanger effectiveness and the fouling factor. [5] Conducted experiment on nanoparticle's concentration effect on Nusselt number and heat transfer characteristics with baffles and without baffles which resulted in enhancement up to 12% for 0.2 % concentration and enhancement up to 22% for 0.1% concentration .All these results were obtained when baffles were used in the experimentation. [6] This paper suggested inserting twisted tape in double pipe heat exchangers which gave positive results of heat transfer coefficient on both tube side and annulus side of heat exchanger.…”

Section: Iintroductionmentioning

confidence: 99%

Execution of a Smart Prediction Tool to Evaluate Thermal Performance in a heat exchanger by using Single Elliptical Leaf Strips with altered Angle

Rao¹,

Raju²

2019

IJITEE

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Heat exchangers are prominent industrial applications where engineering science of heat transfer and Mass transfer occurs. It is a contrivance where transfer of energy occurs to get output in the form of energy transfer. This paper aims at finding a solution to improve the thermal performance in a heat exchanger by using passive method techniques. This experimental and numerical analysis deals with finding the temperature outlets of cold and hot fluid for different mass flow rates and also pressure drop in the tube and the annular side by adding an elliptical leaf strip in the pipe at various angles. The single elliptical leaf used in experiment has major to minor axes ratios as 2:1 and distance of 50 mm between two leaves are arranged at different angular orientations from 0 0 to 1800 with 100 intervals. Since it’s not possible to find the heat transfer rates and pressure drops at every orientation of elliptical leaf so a generalized regression neural network (GRNN) prediction tool is used to get outputs with given inputs to avoid experimentation. GRNN is a statistical method of determining the relationship between dependent and independent variables. The values obtained from experimentation and GRNN nearly had precise values to each other. This analysis is a small step in regard with encomiastic approach for enhancement in performance of heat exchangers

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Experimental Studies on Heat Transfer Performance of Double Pipe Heat Exchanger with using Baffles and Nanofluids

Cited by 11 publications

References 6 publications

An Effect of Twisted Tape with Nanofluid on the Performance of Double Pipe Heat Exchanger, A Comprehensive Review

An Effect of Twisted Tape with Nanofluid on the Performance of Double Pipe Heat Exchanger, A Comprehensive Review

Counterflow HE analysis of Cu and SiO₂ nanofluids in the developing flow region

Execution of a Smart Prediction Tool to Evaluate Thermal Performance in a heat exchanger by using Single Elliptical Leaf Strips with altered Angle

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Experimental Studies on Heat Transfer Performance of Double Pipe Heat Exchanger with using Baffles and Nanofluids

Cited by 11 publications

References 6 publications

An Effect of Twisted Tape with Nanofluid on the Performance of Double Pipe Heat Exchanger, A Comprehensive Review

An Effect of Twisted Tape with Nanofluid on the Performance of Double Pipe Heat Exchanger, A Comprehensive Review

Counterflow HE analysis of Cu and SiO2 nanofluids in the developing flow region

Execution of a Smart Prediction Tool to Evaluate Thermal Performance in a heat exchanger by using Single Elliptical Leaf Strips with altered Angle

Contact Info

Product

Resources

About

Counterflow HE analysis of Cu and SiO₂ nanofluids in the developing flow region