1-20 of 79
Keywords: thermal resistance
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles
Article Type: Research-Article
J. Heat 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
Article Type: Research-Article
J. Heat Transfer. March 2020, 142(3): 031901.
Paper No: HT-18-1589
Published Online: January 13, 2020
... loss to the environment. The environment temperature is 25 °C for water-cooling LHP test and air-cooling LHP test. 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 = T chip...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. December 2019, 141(12): 122505.
Paper No: HT-18-1746
Published Online: October 30, 2019
... by 27–42%. e-mail:  mhazmy@kau.edu.sa 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
Article Type: Research-Article
J. Heat 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
Article Type: Research-Article
J. Heat 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
Article Type: Research-Article
J. Heat 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
Article Type: Research-Article
J. Heat 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
Article Type: Research-Article
J. Heat Transfer. August 2014, 136(8): 081301.
Paper No: HT-13-1602
Published Online: May 9, 2014
...M. Eslami; K. Jafarpur Substituting into Eq. (45) , it is an easy task to show that (47) R ' tot , V , opt k 0 ≈ 0 . 285 k ∧ ϕ which is 43% smaller than thermal resistance of a normal I shaped link. However, comparing the above equation...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. March 2014, 136(3): 031302.
Paper No: HT-12-1504
Published Online: November 28, 2013
... (W/m 2 ) R I = thermal resistance of interface (m 2 K/W) R M = thermal resistance of bulk middle-plate (m 2 K/W) t I = thickness of interface (m) t M = thickness of bulk middle-plate (m) k I...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. March 2013, 135(3): 032601.
Paper No: HT-12-1091
Published Online: February 8, 2013
... this, a thermal resistance model from literature for metal foams is suitably modified to account for contact resistance. The contact resistance is then evaluated using the experimental results. A correlation for the estimation of the contact resistance as a function of the pertinent parameters, based on the above...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. November 2012, 134(11): 111401.
Published Online: September 28, 2012
..., the best fitting thermal dissipation values by 1D modeling are systematically lower than the 2D inferred values (Table 3 ). To compare with existing data, conversion to the overall thermal resistance must be performed. A direct conversion to the overall thermal resistance from the thermal...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2012, 134(4): 042402.
Published Online: February 13, 2012
... the electrons. As a result, the experimental data can be well-explained using the computational model. The thermal resistance between electrons in Au and phonons in Si, which quantifies the direct electron–phonon coupling strength, is calculated from the measured data. The results reveal that in the thermal...
Journal Articles
Article Type: Technical Briefs
J. Heat 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
Article Type: Research Papers
J. Heat 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
Article Type: Research Papers
J. Heat Transfer. October 2011, 133(10): 101801.
Published Online: August 11, 2011
... applications. A cross section of the heat exchanger is presented in Fig. 3 . As mentioned in the previous section, the thermal resistance due to the outside heat transfer coefficient is neglected for the sake of simplicity. Accordingly, all parts of the tube have been insulated inside the heat exchanger...
Journal Articles
Article Type: Research Papers
J. Heat 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
Article Type: Research Papers
J. Heat 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
Article Type: Research Papers
J. Heat 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. 23 12 2009 26 10 2010 02 02 2011 02 02 2011 CCD image sensors evaporation flow visualisation heat pipes heat...
Journal Articles
Article Type: Research Papers
J. Heat 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
Article Type: Research Papers
J. Heat 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...