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Keywords: heat transfer
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Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2022, 144(6): 062104.
Paper No: JERT-21-1490
Published Online: August 11, 2021
... eddy simulation (LES) model for Reynolds (Re) numbers from 10,000 to 50,000. A total of six different connecting holes were investigated with a smooth and dimpled surface. A partial spherical dimple with two circular holes showed the highest heat transfer, but it has a higher pressure loss penalty...
Journal Articles
Article Type: Review Articles
J. Energy Resour. Technol. August 2021, 143(8): 080801.
Paper No: JERT-20-1677
Published Online: November 6, 2020
... of the airfoil. The leading edge is suitable for this type of cooling, as this area is relatively thick. Air strikes the target surface. In these methods, the coolant passes through the region of interest and increases the heat transfer coefficient. The gas turbines have a wide range of applications...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. November 2020, 142(11): 112111.
Paper No: JERT-20-1334
Published Online: August 21, 2020
... are considered as the primary and secondary working fluids, and the twisted tape makes the flow further disturbed so that a larger overall heat transfer coefficient is obtained. The finite volume method has been applied to scrutinize the impacts of Reynolds number as well as the twisting-tape turns number...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. November 2020, 142(11): 112107.
Paper No: JERT-20-1051
Published Online: June 12, 2020
... in the temperatures ranging from 25 to 50 °C of and the nano-particles concentrations ranging from 0.125% to 1.5% previously. The presence of nano-particles leads to intensify the pressure descent and heat transfer, simultaneously. Therefore, the second goal was to evaluate the influence of nano-particles...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. July 2020, 142(7): 072101.
Paper No: JERT-19-1559
Published Online: March 13, 2020
... in the J ournal of E nergy R esources T echnology . 22 08 2019 15 02 2020 15 02 2020 28 02 2020 desiccant air cooling effectiveness heat transfer performance regenerative evaporative cooler energy conversion/systems energy systems analysis heat energy generation...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2020, 142(6): 061305.
Paper No: JERT-19-1488
Published Online: December 26, 2019
... simulation (LES) is utilized. Results from the numerical study show a good agreement with the experimental data. From the results, it can be concluded that increasing both Reynolds number and rotational speed is in favor of the heat transfer coefficient enhancement, especially in the turn region. Fig. 2...
Journal Articles
Article Type: Research-Article
J. Energy Resour. Technol. July 2019, 141(7): 070710.
Paper No: JERT-18-1551
Published Online: May 21, 2019
... deployed. The experimental results have identified the heat input and output as the most influential aspect for both the operation and a possible scale-up of such a TCES system. The decisive parameter for the heat input and output is the heat transfer coefficient between immersed heat exchangers...
Journal Articles
Article Type: Research-Article
J. Energy Resour. Technol. November 2019, 141(11): 112001.
Paper No: JERT-19-1035
Published Online: May 17, 2019
... approaches were considered for tracking the buoyancy effect on heat transfer. In the first case, the density ratio was set constant, and the rotational speed was varied. In the second case, the density ratio was changed in the stationary case, and the effect of density ratio was discussed. The range...
Journal Articles
Article Type: Research-Article
J. Energy Resour. Technol. July 2019, 141(7): 070707.
Paper No: JERT-18-1433
Published Online: April 19, 2019
... and CFD–DEM models show qualitative accordance and are therefore applied for further investigations. The MFM (as a variation of the TFM) is applied in order to simulate hydrodynamics and heat transfer to immersed objects in a small-scale experimental test rig because the MFM can handle the required small...
Journal Articles
Article Type: Research-Article
J. Energy Resour. Technol. September 2017, 139(5): 051201.
Paper No: JERT-16-1384
Published Online: February 24, 2017
...Bengt Sunden; Zan Wu Control of heat transfer is important in wind power systems. In cold climate, the problems of icing and de-icing of the turbine blades need to be handled by efficient heat transfer technologies. Heat-generating components like electric generator, gear box, and frequency...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. September 2011, 133(3): 031002.
Published Online: September 6, 2011
... mixtures heat transfer hydrogen laminar flow organic compounds syngas velocity measurement 15 01 2011 14 06 2011 06 09 2011 06 09 2011 2011 American Society of Mechanical Engineers ...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2008, 130(2): 022301.
Published Online: May 16, 2008
... heat transfer parameter is kept constant as the heat exchanger allocation parameter is allowed to vary. The value of the heat exchanger allocation parameter corresponding to the maximum coefficient of performance (COP) is noted. The results are compared to those of a non-Carnot refrigerator...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. September 2007, 129(3): 232–242.
Published Online: March 24, 2007
...N. Hegde; I. Han; T. W. Lee; R. P. Roy Computational simulations of flow and heat transfer in heat recovery steam generators (HRSGs) of vertical- and horizontal-tube designs are reported. The main objective of the work was to obtain simple modifications of their internal configuration that render...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2007, 129(2): 102–106.
Published Online: August 19, 2006
... was shown by comparing the experiments. Furthermore, the formula between Reynolds number and Nusselt number was obtained, which express the heat transfer around the gas hydrate lump. Equilibrium diagram of methane hydrate and HCFC141b hydrate Experimental apparatus of the measuring HCFC141b...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. September 2007, 129(3): 254–265.
Published Online: July 23, 2006
... refrigeration cycle, interconnected by absorption, separation, and heat transfer processes. The performance was evaluated by both energy and exergy efficiencies, with the latter providing good guidance for system improvement. The influences of the key parameters, which include the basic working solution...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. September 2007, 129(3): 266–277.
Published Online: July 16, 2006
.... As there are humid air and refrigerant single- and two-phase streams involved in the heat transfer process, then there are irreversibilities or exergy destruction, due to pressure losses I ̇ Δ P , due to temperature difference I ̇ Δ T and due to specific humidity gradient I ̇ Δ ω . These principal components...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2007, 129(2): 159–167.
Published Online: April 1, 2006
.... The pressure drop at various sections and the heat transfer coefficients are computed using empirical correlations. Solutions are obtained by using SIMULINK . The model is validated by comparing its steady state and dynamic responses with the actual plant data. Open loop responses of the model to the step...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2006, 128(2): 135–142.
Published Online: January 31, 2006
...Andreas Johansson; Filip Johnsson; Bengt-Åke Andersson High in-bed heat transfer and low corrosive environment imply that the loop seal of a circulating fluidized bed (CFB) boiler is an advantageous location for superheaters. In order to increase the knowledge on the flow pattern and the heat...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. September 2006, 128(3): 161–167.
Published Online: October 18, 2005
... transfer area of exchanger, m 2 F a , F b heat transfer areas of exchangers a and b , m 2 I iteration m h flow rate of the hot fluid, kg/s m c flow rate of the cold fluid, kg/s N...
Journal Articles
Article Type: Article
J. Energy Resour. Technol. March 2005, 127(1): 37–41.
Published Online: March 29, 2005
... does not always guarantee better generating performances because of the thermoelectric-coupled effect in the generators. Based on a coupled analytical thermal model and a set of performance formulas with considerations of heat transfer irreversibility, numerical simulation examples are provided...