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R Ellahi - One of the best experts on this subject based on the ideXlab platform.
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numerical investigation of Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with nanofluid a sensitivity analysis by response surface methodology
Powder Technology, 2017Co-Authors: Kamel Milani Shirva, Soroush Mirzakhanlari, Mojtaba Mamouria, R EllahiAbstract:Abstract In this paper, the Response Surface Methodology (RSM) and two phase mixture model are proposed to investigate the sensitivity analysis of Heat transfer and Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with Al 2 O 3 nanofluid. The effective parameters of the Reynolds number (50 ≤ Re ≤ 250), nanoparticles volume fraction (0.01 ≤ ϕ ≤ 0.05) and the entrance status of nanofluid S (inner Pipe, outer Pipe and both of them) are considered to serve the purpose. The governing equations are solved with SIMPLE algorithm and Discretized using a finite volume method. It is found that the mean Nusselt number enhances with the Re number, and this enhancement is in the vicinity of 57.70% for the case with Re = 50 to 150 and ϕ = 0.03, when the nanofluid enters the outer Pipe. Increasing the ϕ and S reduces the mean Nusselt number. The Heat Exchanger effectiveness enhances with ϕ and reduces with S. Furthermore, the sensitivity of the mean Nusselt number to the Re number is positive but to ϕ is negative; while the sensitivity to the Re number and ϕ is positive for Heat Exchanger effectiveness. Additionally, the effects of physical parameters are illustrated graphically.
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numerical investigation of Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with nanofluid a sensitivity analysis by response surface methodology
Powder Technology, 2017Co-Authors: Kamel Milani Shirvan, Soroush Mirzakhanlari, Mojtaba Mamourian, R EllahiAbstract:Abstract In this paper, the Response Surface Methodology (RSM) and two phase mixture model are proposed to investigate the sensitivity analysis of Heat transfer and Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with Al2O3 nanofluid. The effective parameters of the Reynolds number (50 ≤ Re ≤ 250), nanoparticles volume fraction (0.01 ≤ ϕ ≤ 0.05) and the entrance status of nanofluid S (inner Pipe, outer Pipe and both of them) are considered to serve the purpose. The governing equations are solved with SIMPLE algorithm and Discretized using a finite volume method. It is found that the mean Nusselt number enhances with the Re number, and this enhancement is in the vicinity of 57.70% for the case with Re = 50 to 150 and ϕ = 0.03, when the nanofluid enters the outer Pipe. Increasing the ϕ and S reduces the mean Nusselt number. The Heat Exchanger effectiveness enhances with ϕ and reduces with S. Furthermore, the sensitivity of the mean Nusselt number to the Re number is positive but to ϕ is negative; while the sensitivity to the Re number and ϕ is positive for Heat Exchanger effectiveness. Additionally, the effects of physical parameters are illustrated graphically.
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enhancement of Heat transfer and Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with porous media numerical simulation and sensitivity analysis of turbulent fluid flow
Applied Thermal Engineering, 2016Co-Authors: Kamel Milani Shirvan, Soroush Mirzakhanlari, R Ellahi, Mojtaba MamourianAbstract:Abstract A 2-D numerical simulation and sensitivity analysis are carried out on turbulent Heat transfer and Heat Exchanger effectiveness enhancement in a double Pipe Heat Exchanger filled with porous media. The Darcy–Brinkman–Forchheimer and the k–e turbulent models are employed to achieve Heat transfer and Heat Exchanger effectiveness in the presented model. The sundry parameters Reynolds number (3000 ⩽ Re ⩽ 5000), Darcy number (10−5 ⩽ Da ⩽ 10−3) and the porous substrate thickness (1/3 ⩽ δ ⩽ 1) are studied. It is found that the mean Nusselt number increases by increasing the values of Reynolds number and dwindling of the Darcy number and porous substrate thickness. In addition, the Heat Exchanger effectiveness enhances with the Re and Da numbers and δ. The sensitivity analysis revealed that to maximize only the mean Nusselt number then it can be achieved for Re = 5000, Da = 10−5 and δ = 1/3. However, to maximize only the Heat Exchanger effectiveness then it attains at Re = 5000, Da = 10−3 and δ = 1. On the other hand, to maximize Nu and E simultaneously, then it can be obtained for Re = 5000, Da = 10−5 and δ = 1.
Antonio C M Sousa - One of the best experts on this subject based on the ideXlab platform.
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effect of twisted tape inserts on Heat transfer friction factor of fe3o4 nanofluids flow in a double Pipe u bend Heat Exchanger
International Communications in Heat and Mass Transfer, 2018Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, A Kirubeil, Manoj K Singh, Antonio C M SousaAbstract:Abstract The convective Heat transfer, friction factor, effectiveness and number of transfer units (NTU) of Fe3O4/water nanofluids flow in a double Pipe U-bend Heat Exchanger and with twisted tape inserts were estimated experimentally. The experiments were conducted in the Reynolds number range from 16,000 to 32,000, particle volume concentrations range from 0.005% to 0.06% and twisted tape inserts of H/D = 10, 15 and 20 were used. The Nusselt number of nanofluids increases with increase of particle volume concentrations and Reynolds number and it further increases with decrease of twist ratio of twisted tape inserts. The Nusselt number is enhanced to 14.76% (no insert) and it is further increased to 38.75% (with twisted tape inserts of H/D = 10) at 0.06% volume concentration and at Reynolds number of 30,000 compare to water data. Similarly, the friction factor penalty of 1.092-times (no insert) and further friction penalty of 1.251-times (with twisted tape inserts of H/D = 10) at Reynolds number of 30,000 compared to water data. New Nusselt number and friction factor correlations have been proposed based on the experimental data. Finally the effectiveness and NTU of Heat Exchanger is enhanced for nanofluids flow in a double Pipe Heat Exchanger with twisted tape inserts.
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Heat transfer friction factor and effectiveness of fe3o4 nanofluid flow in an inner tube of double Pipe u bend Heat Exchanger with and without longitudinal strip inserts
Experimental Thermal and Fluid Science, 2017Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, Manoj K Singh, Antonio C M SousaAbstract:Abstract Heat transfer, friction factor, effectiveness and number of transfer units (NTU) were determined experimentally for a Fe 3 O 4 nanofluid flowing through the inner tube with longitudinal strip inserts of a double Pipe U-bend Heat Exchanger. Different concentrations of the Fe 3 O 4 nanofluid, which is the hot fluid, were used in the present study and cold water circulates in the annulus region of the double Pipe Heat Exchanger. The Heat transfer and friction factor experiments were conducted for the Reynolds number range from 15,000 to 30,000 with the Fe 3 O 4 nanofluid volume concentrations of 0.005%, 0.01%, 0.03% and 0.06%. The effect on Heat transfer and friction factor of longitudinal strip inserts in the inner tube is studied for three different strip aspect ratios (AR) with the values of 1, 2 and 4, respectively. The results indicate the Nusselt number on the nanofluid side increases with increasing Reynolds number and particle concentration, and with decreasing aspect ratio of the longitudinal strip inserts. The Nusselt number enhancement, compared to the water data, for the 0.06% volume concentration of the nanofluid is 14.7% and it further increases to 41.29% for the same 0.06% concentration with the longitudinal strip insert with AR equal to 1 for the Reynolds number of 28,954. Compared to water data, the friction factor for the 0.06% volume concentration of the nanofluid increases by 1.092-times and it further increases to 1.267-times for the same concentration with the longitudinal strip insert with AR equal to 1 for the Reynolds number of 28,954. The overall performance of the double Pipe Heat Exchanger with longitudinal strip inserts in the nanofluid side is expressed in terms of effectiveness and number of transfer units (NTU). New correlations for the Nusselt number and friction factor are reported and they are based on the obtained experimental data.
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Heat transfer friction factor and effectiveness analysis of fe3o4 water nanofluid flow in a double Pipe Heat Exchanger with return bend
International Communications in Heat and Mass Transfer, 2017Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, Manoj K Singh, Birhanu Mulat Addis, Antonio C M SousaAbstract:The convective Heat transfer, friction factor and effectiveness of different volume concentrations of Fe3O4 nanofluid flow in an inner tube of double Pipe Heat Exchanger with return bend has been estimated experimentally and turbulent flow conditions. The test section used in this study is of double Pipe type in which the inner tube diameter is 0.019 m, the annulus tube diameter is 0.05 m and the total length of inner tube is 5 m. At a distance of 2.2 m from the inlet of the inner tube the return bend is provided. The hot Fe3O4 nanofluid flows through an inner tube, where as the cold water flows through an annulus tube. The volume concentrations of the nanoparticles used in this study are 0.005%, 0.01%, 0.03% and 0.06% with Reynolds number range from 15,000 to 30,000. Based on the results, the Nusselt number enhancement is 14.7% for 0.06% volume concentration of nanofluid flow in an inner tube of Heat Exchanger at a Reynolds number of 30,000 when compared to base fluid data; the pumping penalty of nanofluid is < 10%. The effectiveness of Heat Exchanger for water and nanofluid flow is explained in terms of number of transfer units (NTU) in order to estimate the overall performance of the double Pipe Heat Exchanger. New correlations for Nusselt number and friction factor have been developed based on the experimental data.
Soroush Mirzakhanlari - One of the best experts on this subject based on the ideXlab platform.
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Heat transfer and sensitivity analysis in a double Pipe Heat Exchanger filled with porous medium
International Journal of Thermal Sciences, 2017Co-Authors: Kamel Milani Shirva, Soroush Mirzakhanlari, Soteris A Kalogirou, Haka F Oztop, Mojtaba MamouriaAbstract:Abstract In this paper, 2-D numerical investigation and sensitivity analysis are performed on Heat transfer rate and Heat Exchanger effectiveness of a double Pipe Heat Exchanger filled with porous medium. The Darcy–Brinkman–Forchheimer model is applied to model the flow field in the porous zone. The sensitivity analysis is performed utilizing the Response Surface Methodology. The studied parameters are: Reynolds number (50 ≤ Re ≤ 250), Darcy number (10−5 ≤ Da ≤ 10−3), temperature difference between hot and cold fluids (30 ≤ ΔT ≤ 70) and the porous substrate thickness (1/3 ≤ δ ≤ 1). The obtained results showed that enhancement of the Nusselt number due to the increase in Reynolds and Darcy numbers is in the vicinity of the 77.84% for the case with δ = 2/3 and Da = 10−5 to 10−3, and 203.25% for the case with δ = 1 and Re = 50 to 250. Furthermore, increasing porous substrate thickness reduces the mean Nusselt number until δ = 2/3 and then increases it. In addition, it is found that the Heat Exchanger effectiveness increases with the Re number and reduces with enhancement of the Da number. The sensitivity analysis showed that the sensitivity of the mean Nusselt number to the Re and Da numbers and the porous substrate thickness is positive, while the sensitivity of the Heat Exchanger effectiveness to the Re number is positive but to the Da number is negative.
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numerical investigation of Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with nanofluid a sensitivity analysis by response surface methodology
Powder Technology, 2017Co-Authors: Kamel Milani Shirva, Soroush Mirzakhanlari, Mojtaba Mamouria, R EllahiAbstract:Abstract In this paper, the Response Surface Methodology (RSM) and two phase mixture model are proposed to investigate the sensitivity analysis of Heat transfer and Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with Al 2 O 3 nanofluid. The effective parameters of the Reynolds number (50 ≤ Re ≤ 250), nanoparticles volume fraction (0.01 ≤ ϕ ≤ 0.05) and the entrance status of nanofluid S (inner Pipe, outer Pipe and both of them) are considered to serve the purpose. The governing equations are solved with SIMPLE algorithm and Discretized using a finite volume method. It is found that the mean Nusselt number enhances with the Re number, and this enhancement is in the vicinity of 57.70% for the case with Re = 50 to 150 and ϕ = 0.03, when the nanofluid enters the outer Pipe. Increasing the ϕ and S reduces the mean Nusselt number. The Heat Exchanger effectiveness enhances with ϕ and reduces with S. Furthermore, the sensitivity of the mean Nusselt number to the Re number is positive but to ϕ is negative; while the sensitivity to the Re number and ϕ is positive for Heat Exchanger effectiveness. Additionally, the effects of physical parameters are illustrated graphically.
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numerical investigation of Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with nanofluid a sensitivity analysis by response surface methodology
Powder Technology, 2017Co-Authors: Kamel Milani Shirvan, Soroush Mirzakhanlari, Mojtaba Mamourian, R EllahiAbstract:Abstract In this paper, the Response Surface Methodology (RSM) and two phase mixture model are proposed to investigate the sensitivity analysis of Heat transfer and Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with Al2O3 nanofluid. The effective parameters of the Reynolds number (50 ≤ Re ≤ 250), nanoparticles volume fraction (0.01 ≤ ϕ ≤ 0.05) and the entrance status of nanofluid S (inner Pipe, outer Pipe and both of them) are considered to serve the purpose. The governing equations are solved with SIMPLE algorithm and Discretized using a finite volume method. It is found that the mean Nusselt number enhances with the Re number, and this enhancement is in the vicinity of 57.70% for the case with Re = 50 to 150 and ϕ = 0.03, when the nanofluid enters the outer Pipe. Increasing the ϕ and S reduces the mean Nusselt number. The Heat Exchanger effectiveness enhances with ϕ and reduces with S. Furthermore, the sensitivity of the mean Nusselt number to the Re number is positive but to ϕ is negative; while the sensitivity to the Re number and ϕ is positive for Heat Exchanger effectiveness. Additionally, the effects of physical parameters are illustrated graphically.
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enhancement of Heat transfer and Heat Exchanger effectiveness in a double Pipe Heat Exchanger filled with porous media numerical simulation and sensitivity analysis of turbulent fluid flow
Applied Thermal Engineering, 2016Co-Authors: Kamel Milani Shirvan, Soroush Mirzakhanlari, R Ellahi, Mojtaba MamourianAbstract:Abstract A 2-D numerical simulation and sensitivity analysis are carried out on turbulent Heat transfer and Heat Exchanger effectiveness enhancement in a double Pipe Heat Exchanger filled with porous media. The Darcy–Brinkman–Forchheimer and the k–e turbulent models are employed to achieve Heat transfer and Heat Exchanger effectiveness in the presented model. The sundry parameters Reynolds number (3000 ⩽ Re ⩽ 5000), Darcy number (10−5 ⩽ Da ⩽ 10−3) and the porous substrate thickness (1/3 ⩽ δ ⩽ 1) are studied. It is found that the mean Nusselt number increases by increasing the values of Reynolds number and dwindling of the Darcy number and porous substrate thickness. In addition, the Heat Exchanger effectiveness enhances with the Re and Da numbers and δ. The sensitivity analysis revealed that to maximize only the mean Nusselt number then it can be achieved for Re = 5000, Da = 10−5 and δ = 1/3. However, to maximize only the Heat Exchanger effectiveness then it attains at Re = 5000, Da = 10−3 and δ = 1. On the other hand, to maximize Nu and E simultaneously, then it can be obtained for Re = 5000, Da = 10−5 and δ = 1.
N Ravi T Kumar - One of the best experts on this subject based on the ideXlab platform.
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effect of twisted tape inserts on Heat transfer friction factor of fe3o4 nanofluids flow in a double Pipe u bend Heat Exchanger
International Communications in Heat and Mass Transfer, 2018Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, A Kirubeil, Manoj K Singh, Antonio C M SousaAbstract:Abstract The convective Heat transfer, friction factor, effectiveness and number of transfer units (NTU) of Fe3O4/water nanofluids flow in a double Pipe U-bend Heat Exchanger and with twisted tape inserts were estimated experimentally. The experiments were conducted in the Reynolds number range from 16,000 to 32,000, particle volume concentrations range from 0.005% to 0.06% and twisted tape inserts of H/D = 10, 15 and 20 were used. The Nusselt number of nanofluids increases with increase of particle volume concentrations and Reynolds number and it further increases with decrease of twist ratio of twisted tape inserts. The Nusselt number is enhanced to 14.76% (no insert) and it is further increased to 38.75% (with twisted tape inserts of H/D = 10) at 0.06% volume concentration and at Reynolds number of 30,000 compare to water data. Similarly, the friction factor penalty of 1.092-times (no insert) and further friction penalty of 1.251-times (with twisted tape inserts of H/D = 10) at Reynolds number of 30,000 compared to water data. New Nusselt number and friction factor correlations have been proposed based on the experimental data. Finally the effectiveness and NTU of Heat Exchanger is enhanced for nanofluids flow in a double Pipe Heat Exchanger with twisted tape inserts.
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Heat transfer friction factor and effectiveness of fe3o4 nanofluid flow in an inner tube of double Pipe u bend Heat Exchanger with and without longitudinal strip inserts
Experimental Thermal and Fluid Science, 2017Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, Manoj K Singh, Antonio C M SousaAbstract:Abstract Heat transfer, friction factor, effectiveness and number of transfer units (NTU) were determined experimentally for a Fe 3 O 4 nanofluid flowing through the inner tube with longitudinal strip inserts of a double Pipe U-bend Heat Exchanger. Different concentrations of the Fe 3 O 4 nanofluid, which is the hot fluid, were used in the present study and cold water circulates in the annulus region of the double Pipe Heat Exchanger. The Heat transfer and friction factor experiments were conducted for the Reynolds number range from 15,000 to 30,000 with the Fe 3 O 4 nanofluid volume concentrations of 0.005%, 0.01%, 0.03% and 0.06%. The effect on Heat transfer and friction factor of longitudinal strip inserts in the inner tube is studied for three different strip aspect ratios (AR) with the values of 1, 2 and 4, respectively. The results indicate the Nusselt number on the nanofluid side increases with increasing Reynolds number and particle concentration, and with decreasing aspect ratio of the longitudinal strip inserts. The Nusselt number enhancement, compared to the water data, for the 0.06% volume concentration of the nanofluid is 14.7% and it further increases to 41.29% for the same 0.06% concentration with the longitudinal strip insert with AR equal to 1 for the Reynolds number of 28,954. Compared to water data, the friction factor for the 0.06% volume concentration of the nanofluid increases by 1.092-times and it further increases to 1.267-times for the same concentration with the longitudinal strip insert with AR equal to 1 for the Reynolds number of 28,954. The overall performance of the double Pipe Heat Exchanger with longitudinal strip inserts in the nanofluid side is expressed in terms of effectiveness and number of transfer units (NTU). New correlations for the Nusselt number and friction factor are reported and they are based on the obtained experimental data.
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Heat transfer friction factor and effectiveness analysis of fe3o4 water nanofluid flow in a double Pipe Heat Exchanger with return bend
International Communications in Heat and Mass Transfer, 2017Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, Manoj K Singh, Birhanu Mulat Addis, Antonio C M SousaAbstract:The convective Heat transfer, friction factor and effectiveness of different volume concentrations of Fe3O4 nanofluid flow in an inner tube of double Pipe Heat Exchanger with return bend has been estimated experimentally and turbulent flow conditions. The test section used in this study is of double Pipe type in which the inner tube diameter is 0.019 m, the annulus tube diameter is 0.05 m and the total length of inner tube is 5 m. At a distance of 2.2 m from the inlet of the inner tube the return bend is provided. The hot Fe3O4 nanofluid flows through an inner tube, where as the cold water flows through an annulus tube. The volume concentrations of the nanoparticles used in this study are 0.005%, 0.01%, 0.03% and 0.06% with Reynolds number range from 15,000 to 30,000. Based on the results, the Nusselt number enhancement is 14.7% for 0.06% volume concentration of nanofluid flow in an inner tube of Heat Exchanger at a Reynolds number of 30,000 when compared to base fluid data; the pumping penalty of nanofluid is < 10%. The effectiveness of Heat Exchanger for water and nanofluid flow is explained in terms of number of transfer units (NTU) in order to estimate the overall performance of the double Pipe Heat Exchanger. New correlations for Nusselt number and friction factor have been developed based on the experimental data.
Manoj K Singh - One of the best experts on this subject based on the ideXlab platform.
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effect of twisted tape inserts on Heat transfer friction factor of fe3o4 nanofluids flow in a double Pipe u bend Heat Exchanger
International Communications in Heat and Mass Transfer, 2018Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, A Kirubeil, Manoj K Singh, Antonio C M SousaAbstract:Abstract The convective Heat transfer, friction factor, effectiveness and number of transfer units (NTU) of Fe3O4/water nanofluids flow in a double Pipe U-bend Heat Exchanger and with twisted tape inserts were estimated experimentally. The experiments were conducted in the Reynolds number range from 16,000 to 32,000, particle volume concentrations range from 0.005% to 0.06% and twisted tape inserts of H/D = 10, 15 and 20 were used. The Nusselt number of nanofluids increases with increase of particle volume concentrations and Reynolds number and it further increases with decrease of twist ratio of twisted tape inserts. The Nusselt number is enhanced to 14.76% (no insert) and it is further increased to 38.75% (with twisted tape inserts of H/D = 10) at 0.06% volume concentration and at Reynolds number of 30,000 compare to water data. Similarly, the friction factor penalty of 1.092-times (no insert) and further friction penalty of 1.251-times (with twisted tape inserts of H/D = 10) at Reynolds number of 30,000 compared to water data. New Nusselt number and friction factor correlations have been proposed based on the experimental data. Finally the effectiveness and NTU of Heat Exchanger is enhanced for nanofluids flow in a double Pipe Heat Exchanger with twisted tape inserts.
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Heat transfer friction factor and effectiveness of fe3o4 nanofluid flow in an inner tube of double Pipe u bend Heat Exchanger with and without longitudinal strip inserts
Experimental Thermal and Fluid Science, 2017Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, Manoj K Singh, Antonio C M SousaAbstract:Abstract Heat transfer, friction factor, effectiveness and number of transfer units (NTU) were determined experimentally for a Fe 3 O 4 nanofluid flowing through the inner tube with longitudinal strip inserts of a double Pipe U-bend Heat Exchanger. Different concentrations of the Fe 3 O 4 nanofluid, which is the hot fluid, were used in the present study and cold water circulates in the annulus region of the double Pipe Heat Exchanger. The Heat transfer and friction factor experiments were conducted for the Reynolds number range from 15,000 to 30,000 with the Fe 3 O 4 nanofluid volume concentrations of 0.005%, 0.01%, 0.03% and 0.06%. The effect on Heat transfer and friction factor of longitudinal strip inserts in the inner tube is studied for three different strip aspect ratios (AR) with the values of 1, 2 and 4, respectively. The results indicate the Nusselt number on the nanofluid side increases with increasing Reynolds number and particle concentration, and with decreasing aspect ratio of the longitudinal strip inserts. The Nusselt number enhancement, compared to the water data, for the 0.06% volume concentration of the nanofluid is 14.7% and it further increases to 41.29% for the same 0.06% concentration with the longitudinal strip insert with AR equal to 1 for the Reynolds number of 28,954. Compared to water data, the friction factor for the 0.06% volume concentration of the nanofluid increases by 1.092-times and it further increases to 1.267-times for the same concentration with the longitudinal strip insert with AR equal to 1 for the Reynolds number of 28,954. The overall performance of the double Pipe Heat Exchanger with longitudinal strip inserts in the nanofluid side is expressed in terms of effectiveness and number of transfer units (NTU). New correlations for the Nusselt number and friction factor are reported and they are based on the obtained experimental data.
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Heat transfer friction factor and effectiveness analysis of fe3o4 water nanofluid flow in a double Pipe Heat Exchanger with return bend
International Communications in Heat and Mass Transfer, 2017Co-Authors: N Ravi T Kumar, Syam L Sundar, P Bhramara, Manoj K Singh, Birhanu Mulat Addis, Antonio C M SousaAbstract:The convective Heat transfer, friction factor and effectiveness of different volume concentrations of Fe3O4 nanofluid flow in an inner tube of double Pipe Heat Exchanger with return bend has been estimated experimentally and turbulent flow conditions. The test section used in this study is of double Pipe type in which the inner tube diameter is 0.019 m, the annulus tube diameter is 0.05 m and the total length of inner tube is 5 m. At a distance of 2.2 m from the inlet of the inner tube the return bend is provided. The hot Fe3O4 nanofluid flows through an inner tube, where as the cold water flows through an annulus tube. The volume concentrations of the nanoparticles used in this study are 0.005%, 0.01%, 0.03% and 0.06% with Reynolds number range from 15,000 to 30,000. Based on the results, the Nusselt number enhancement is 14.7% for 0.06% volume concentration of nanofluid flow in an inner tube of Heat Exchanger at a Reynolds number of 30,000 when compared to base fluid data; the pumping penalty of nanofluid is < 10%. The effectiveness of Heat Exchanger for water and nanofluid flow is explained in terms of number of transfer units (NTU) in order to estimate the overall performance of the double Pipe Heat Exchanger. New correlations for Nusselt number and friction factor have been developed based on the experimental data.