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Keywords: thermal resistance
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. September 2020, 142(9): 092503.
Paper No: HT-19-1358
Published Online: July 8, 2020
... of thermodynamics, thermal resistance (R th ) is used to investigate the resistance of any configuration to flow of heat comparing at same pumping power. Moreover, the second law of thermodynamics is applied to quantify the rate of entropy generation ( S ˙ gen ) and transport efficiency ( η t ) for MCHS...
Includes: Supplementary data
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. March 2020, 142(3): 031901.
Paper No: HT-18-1589
Published Online: January 13, 2020
... setup Fig. 5 Schematic of air-cooling LHP experimental setup Fig. 6 One key thermocouple position in cross section The whole thermal resistance of LHP ( R all ), from the chip to the condenser, is defined as (1) R all = T chip − T c Q...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2019, 141(12): 122505.
Paper No: HT-18-1746
Published Online: October 30, 2019
... by 27–42%. e-mail:  [email protected] 13 11 2018 14 08 2019 30 10 2019 hollow bricks natural convection in enclosures partitioned cavities numerical simulation finite volume method thermal resistance Summer outdoors temperatures in the city of Jeddah, Saudi...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2019, 141(12): 121802.
Paper No: HT-19-1100
Published Online: October 8, 2019
... ) to form FP-OHP. DI water, ethanol, methanol, acetone, and FC-72 are investigated. The measured thermal resistance was strongly dependent on operational parameters. The optimum performance was observed with acetone with a charge ratio of 70% in the vertical orientation. The lowest thermal resistance...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. September 2019, 141(9): 091814.
Paper No: HT-18-1603
Published Online: August 30, 2019
... performance of mLHP. The minimum thermal resistance was found to be 0.38 °C/W with an acceleration rate of 4 g at a vibration frequency of 25 Hz (at a heat load of 120 W). The low-frequency vibration improves the mLHP performance under the longitudinal vibration loading. At higher heat loads, changing...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. September 2019, 141(9): 091809.
Paper No: HT-18-1605
Published Online: July 22, 2019
..., of surface area 150 × 420 mm 2 , and at lowering its mean temperature by transferring the heat to an adjacent heat sink of same dimensions. The PHP thermal resistance is measured at various heat transfer rates, condenser temperatures, and inclination angles. It decreases when the heat transfer rate increases...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. September 2015, 137(9): 091003.
Paper No: HT-14-1013
Published Online: September 1, 2015
... of galinstan is about half that of water and its viscosity is 2.5 times that of water, caloric, rather than convective, resistance is dominant. We analytically investigate the effect of using structured surfaces (SSs) to reduce the overall thermal resistance of galinstan-based microgap cooling in the laminar...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. August 2014, 136(8): 081301.
Paper No: HT-13-1602
Published Online: May 9, 2014
... parameters. In this trend, a new geometry is assumed and analyzed (by analytical or numerical methods) hoping to decrease the total thermal resistance of the system. Therefore, the objective of the present paper is to illustrate how to analyze a conductive cooling network and improve it using the analytical...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. March 2014, 136(3): 031302.
Paper No: HT-12-1504
Published Online: November 28, 2013
... of this work, or allow others to do so, for United States government purposes. 14 09 2012 11 07 2013 A noncontact, nondestructive neutron diffraction technique for measuring thermal resistance of buried material interfaces in bulk samples, inaccessible to thermocouple measurements...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. March 2013, 135(3): 032601.
Paper No: HT-12-1091
Published Online: February 8, 2013
... should remain constant and also it follows the trend in Ref. [ 30 ]. A sensitivity analysis is conducted to estimate the effect of the pore distribution on the heat transfer and the thermal resistances. Table 3 gives the results of the analysis, carried out by varying the pore diameter...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. April 2012, 134(4): 042402.
Published Online: February 13, 2012
... , “ Measurement and Evaluation of the Interfacial Thermal Resistance Between a Metal and a Dielectric ,” Appl. Phys. Lett. , 93 ( 23 ), p. 231910 . 10.1063/1.3039806 4 Hopkins , P. E. , and Norris , P. M. , 2007 , “ Substrate Influence in Electron–Phonon Coupling Measurements in Thin Au...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. January 2012, 134(1): 014504.
Published Online: November 21, 2011
... showed that applying the magnetic field on the water-based ferrofluid reduced the thermal resistance of PHP in all orientations. In the presence of a magnetic field, the best thermal performance was achieved at the higher charging ratios (70%) in all orientations. 01 02 2011 27 07 2011 21...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. November 2011, 133(11): 111801.
Published Online: September 16, 2011
...A. Tamayol; K. Hooman Using a thermal resistance approach, forced convection heat transfer through metal foam heat exchangers is studied theoretically. The complex microstructure of metal foams is modeled as a matrix of interconnected solid ligaments forming simple cubic arrays of cylinders...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. October 2011, 133(10): 101801.
Published Online: August 11, 2011
... applications. 21 12 2009 25 04 2011 11 08 2011 11 08 2011 chemically reactive flow copper design engineering flow measurement heat exchangers maintenance engineering nickel pipe flow thermal resistance velocity measurement fouling 90/10 Cu/Ni tube heat transfer...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. September 2011, 133(9): 091301.
Published Online: July 8, 2011
...J. Ordóñez-Miranda; J. J. Alvarado-Gil In this work, transient heat transport in a flat layered system, with interface thermal resistance, is analyzed, under the approach of the Cattaneo–Vernotte hyperbolic heat conduction model using the thermal quadrupole method. For a single semi-infinite layer...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. August 2011, 133(8): 081902.
Published Online: May 2, 2011
... geometry of a complex assembly of fins, i.e., an assembly where there is a cavity between the two branches of the T-Y-assembly of fins and two additional extended surfaces. The global thermal resistance of the assembly is minimized four times by geometric optimization subject to the following constraints...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. May 2011, 133(5): 052901.
Published Online: February 2, 2011
... OHP had a much lower thermal resistance than the DI water OHP with the most effective heat transfer in the nanofluid OHP occurring in the slug flow regime. Khandekar , S. , and Groll , M. , 2004 , “ An Insight Into Thermo-Hydrodynamic Coupling in Closed-Loop Pulsating Heat Pipes ,” Int...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. December 2010, 132(12): 121901.
Published Online: September 17, 2010
... transfer coefficients. Pressure drop measurements are correlated with the Darcy–Forcheimer relation. Empirical heat transfer correlations for the aluminum and carbon foam samples are provided. Using a hypothetical heat exchanger considering only the thermal resistance between the ambient air and the outer...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. September 2010, 132(9): 091303.
Published Online: June 29, 2010
... predictions have demonstrated a very good comparison with previously published experimental data. By adding a radiative resistance to the model, improved performance predictions of overall thermal resistance/conductance were possible, leading to the extension of single layer analytical model to multiple...