... indicate that the optimized EHS-VC with a filling liquid mass of 1.0 g and 5 layers of copper mesh shows superior thermal performance among all tested working conditions. The surface temperature distribution of the optimized EHS-VC remains relatively stable and the surface temperature of the optimized EHS...

.... The current study highlights the transient numerical analysis of wickless heat pipes (thermosyphons) for the thermal management of electronic devices. The thermal performance of the thermosyphon is analyzed using both copper oxide (CuO) and aluminum oxide (Al 2 O 3 ) nanofluids with their concentrations at 1...

... cooling system thermal performance heat input tilt angle transmit/receive module LED heat pipes thermophysical properties two-phase flow and heat transfer The trend toward miniaturization of electronic devices, increasing the number of active electronic components and the number...

...Lei Zhang; Jun Zhou; Simeng Zuo; Guangyao An; Jinhua Lang; Wei Yuan As the volume of natural draft wet cooling towers (NDWCTs) continues to increase, the influence of ambient air on the thermal performance of the NDWCT is not clear. Therefore, the main parameters such as gas–water ratio...

... on a validated chemical mechanism. Results indicate that the air tube diameter should be determined to obtain not only the improved overall thermal performance on the air side, regarding both heat transfer and pressure drop, but also the properly limited maximum temperature on the fuel side to avoid the strong...

... transfer law as the inlet temperatures increased further. The discrepancy of maximum and average temperature of design A and design C under different inlet temperature were maintained at 4 °C and 1 °C, respectively. It can be concluded that the flow distributor cannot give a better thermal performance...

... 08 2022 31 08 2022 22 09 2022 geothermal heat exchanger nanofluids ceramic nanoparticles thermal performance hydrodynamic performance energy systems heat exchangers heat recovery heat transfer enhancement The geothermal heat pump or geothermal heat exchanger (GHE...

... enhancement thermal performance structure parameters heat exchangers The streamlines reflect the flow directions of different fluid particles. For the internal flow, the recirculation flows are mainly generated inside the protrusions. On this account, the flow velocity is lower in the protrusion...

...Md. Reyaz Arif; Mohammad Athar Khan; Md. Azhar; Naiem Akhtar; Md. Meraj In the present study, experimental studies have been performed to compare the thermal performance of two geometrically identical box type solar (B-T-S) cookers. To carry out this aim, the thermal performance of BTS cooker...

...-shaped ribs. The comparison of the time-averaged thermal fields generated using computations has been made with experimentally measured Nusselt numbers, friction factors, thermal performance factor (TPF), and Reynolds analogy performance parameter (RAPP) for all cases. The overall thermal performance...

... with two different internal geometries, namely inserted fins and dimpled surface. The dimple surface produced a better thermal performance by producing 173.6% more output power with 20.57% less pressure drop. In another study, Wang et al. [ 13 ] numerically compared the EHX consisting of deflectors...

... of ribs (R) or protrusions (P) is in the form of a part of cylinder or sphere, respectively. The results include the variations of Nusselt number, friction factor, and thermal performance over a range of Reynolds numbers from 140 to 605 in microchannels with rib (MCR), protrusion (MCP), or cavity pairs...

...Wen-Xiao Chu; Yao-Wen Chang; Yi-Yu Hu; Chi-Chuan Wang In this paper, the thermal performance of an AntMiner mining machine containing 189 chips on three printed circuit board (PCBs) is experimentally studied. The numerical method is applied to analyze the local airflow and thermal distribution...

...% is found in the value of Nusselt number with double strip helical screw insert at twist ratio of 1.5 and low value of Reynolds number in the flow of nanofluid than water in plain tube. The common correlations of Nusselt number and friction factor are generated. The thermal performance factor (TPF...

..., and nanoparticles. The objective of this study is to investigate the thermal performance of graphene nanoplatelets (GNPs) dispersed in small quantities in 1-tetradecanol (C 14 H 30 O) PCM. This nano-enhanced PCM (NPCM) is placed in the annular space of a shell and tube in a solar thermal storage unit. The numerical...

...A. Torr; G. I. Mahmood; L. Cramer Structural inserts are employed to enhance the heat transfer in channel flow with the expense of thermal performance. The present investigation employs the wavy porous screens as inserts in an air channel and measures the pressure drop and heat transfer along...

.... Email: antonio.gameiro@dem.uc.pt Email: v.costa@ua.pt 11 07 2019 23 11 2019 24 11 2019 12 12 2019 LED lamps radial plane fins heat sinks thermal performance natural convection conjugate heat transfer extended surfaces/fins heat transfer enhancement thermal...

... to plain water operating condition. Furthermore, the radiator tube length has been shortened by 2.0% and 0.75% for both Al and Cu nanoparticle filled fluid, respectively, to obtain the same thermal performance at a single tube. The total required heat transfer surface area is also reduced by 2.0% and 1.15...

... channel and a maximum gain of 1.33 on thermal performance factor was obtained for the medium groove width. From the previous literature, it is found that there is limited information available for heat transfer in a swirling sink flow between two stationary parallel circular disks. Therefore...

... number found to increase with the increase in the nanoparticle concentration and nanofluid velocity. CNT-water nanofluids functionalization surfactant thermal performance Conventional single phase fluids such as water, engine oil, and ethylene glycol (EG) usually possess poor thermal...