Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Validation of the experimental setup: comparison of present experimental plain circular tube friction factor data with plain circular tube correlation

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Validation of the experimental setup: comparison of present experimental plain circular tube Nusselt number data with plain circular tube correlation

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Schematic diagram of the experimental rig

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Layout of a circular duct with full-length fin insert (a) helical screw-tape and (b) twisted-tape

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Circular duct having wire coil insert

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Effect of helical screw-tape parameter on friction factor—coil helix angle = 60 deg, d/Dh = 0.07692

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Effect of coil helix angle on friction factor p = 0.31, d/Dh = 0.1026

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Effect of coil wire diameter on friction factor—coil helix angle = 30 deg, p = 0.25

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Comparison of present experimental friction factor data with the experimental friction factor data, Eq. (4), d/Dh = 0.07692 [4]

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Effect of helical screw-tape parameter on Nusselt number—coil helix angle = 60 deg, d/Dh = 0.1026

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Effect of coil helix angle on Nusselt number p = 0.31, d/Dh = 0.07692

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Effect of coil wire diameter on Nusselt number—coil helix angle = 60 deg, p = 0.25

Date of download: 12/21/2017 Copyright © ASME. All rights reserved. From: Laminar Flow Heat Transfer and Pressure Drop in a Circular Tube Having Wire-Coil and Helical Screw-Tape Inserts J. Heat Transfer. 2013;135(2):021901-021901-8. doi:10.1115/1.4007415 Figure Legend: Comparison of present experimental Nusselt number data with the experimental Nusselt number data, Eq. (3), d/Dh = 0.07692 [4]