1. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
(a) Schematic of the experimental setup for heat transfer and pressure drop investigation in a microtube and (b) 3D drawing of measurement equipment mounting

2. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Schematic drawing of test section assembly

3. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Heat loss versus wall to ambient temperature difference for three test sections with different heating lengths

4. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Comparison of heat losses from the test section at different vacuum levels

5. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Test tube cross-section viewed from an optical microscope and the internal surface image obtained from a laser confocal scanning microscope, Ra = 0.8 μm

6. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Comparison of heat loss, qloss, normalized by the input heat, qin, as a function of Re at three different heating lengths

7. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Comparison of local net heat flux along the test tube with and without considering heat losses for Re = 4700 and Re = 2100

8. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
The comparison of viscous heating effect on Nu in turbulent flow region using laminar flow equation, Eq. (8), and turbulent flow equation, Eq. (9)

9. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
The variation of uncertainty in Nu as a function of Re at three heating lengths

10. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Comparison of friction factor data with theoretical predictions

11. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Comparison of experimental data for Nu for 962 diameter tube with available correlations after accounting for heat losses, viscous heating and axial conduction; inner diameter of microtube = 962 μm and Lh = 25 mm

12. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Comparison of Nu/Nuth with different heat loss correction equations, Eq. (8) based on laminar flow, and Eq. (9) based on turbulent flow

13. Date of download: 11/15/2017
Copyright © ASME. All rights reserved.
From: Heat Transfer Investigation of Air Flow in Microtubes—Part I: Effects of Heat Loss, Viscous Heating, and Axial Conduction
J. Heat Transfer. 2013;135(3): doi: /
Figure Legend:
Effect of axial heat conduction in laminar and turbulent regions and comparison of experimental data with Lin and Kandlikar [28] model