Results 11 to 20 of about 17,362 (213)

State-of-the-Art Review of Fluid Catalytic Cracking (FCC) Catalyst Regeneration Intensification Technologies

Energies, 2022
Fluid catalytic cracking (FCC) is the workhorse of modern crude oil refinery. Its regenerator plays a critical role in optimizing the overall profitability by efficiently restoring the catalyst activity and enhancing the heat balance in the riser reactor.
Adefarati Oloruntoba, Yongmin Zhang, Chang Samuel Hsu   +2 more
doaj   +1 more source

Expanded Microchannel Heat Exchanger: Finite Difference Modeling

Designs, 2021
A finite difference model of a heat exchanger (HX) considered maldistribution, axial conduction, heat leak, and the edge effect, all of which are needed to model a high effectiveness HX.
David Denkenberger, Joshua M. Pearce, Michael Brandemuehl, Mitchell Alverts, John Zhai   +4 more
doaj   +1 more source

Experimental Investigation of Two-Phase Flow Distribution with Different Vertical Header Configurations

Energies, 2022
In this study, we investigated the behavior of two-phase flow distribution inside a vertical header of a microchannel heat exchanger (MCHX) that functions as an evaporator of a heat pump system. In general, the two-phase flow distribution behavior of the
Moojong Kim, Mark Anthony Redo, Jongsoo Jeong, Kiyoshi Saito, Sangmu Lee, Hyunyoung Kim   +5 more
doaj   +1 more source

A Hybrid Numerical Methodology Based on CFD and Porous Medium for Thermal Performance Evaluation of Gas to Gas Micro Heat Exchanger

Micromachines, 2020
In micro heat exchangers, due to the presence of distributing and collecting manifolds as well as hundreds of parallel microchannels, a complete conjugate heat transfer analysis requires a large amount of computational power.
Danish Rehman, Jojomon Joseph, Gian Luca Morini, Michel Delanaye, Juergen Brandner   +4 more
doaj   +1 more source

Investigation on Flow Maldistribution and Thermo-Hydraulic Performance of PCHEs with Spoiler Perforated Boards

Energies, 2022
In this study, the effects of the maldistribution coefficient on the thermo-hydraulic performance of discontinuous fin printed circuit heat exchanger (DF-PCHE) entrance head and channels are numerically investigated. To improve the flow uniformity at the
Wei Wang, Mengke Niu, Yufei Tan, Bingxi Li, Yong Shuai   +4 more
doaj   +1 more source

Influence of gas flow rate on liquid distribution in trickle-beds using perforated plates as liquid distributors [PDF]

, 2008
Two wire mesh tomography devices and a liquid collector were used to study the influence of the gas flow rate on liquid distribution when fluids distribution on top of the reactor is ensured by a perforated plate.
Atta A., Babu B. V., Borda M., Herskowitz M., Kundu A., Marcandelli C., Møller L. B., Saroha A. K., Sylvester N. D., Weekman V. W. J.   +9 more
core   +3 more sources

The geographical maldistribution of obstetricians and gynecologists in Japan.

PLoS ONE, 2021
BackgroundIn Japan, there is a large geographical maldistribution of obstetricians/gynecologists, with a high proportion of females. This study seeks to clarify how the increase in the proportion of female physicians affects the geographical ...
Kunichika Matsumoto, Kanako Seto, Eijiro Hayata, Shigeru Fujita, Yosuke Hatakeyama, Ryo Onishi, Tomonori Hasegawa   +6 more
doaj   +1 more source

Design optimization of baffle in heat exchanger for improving flow maldistribution and pressure drop

Nihon Kikai Gakkai ronbunshu, 2022
Heat exchangers (HEs) are used in process industries such as power plants and petroleum refineries. It is important to minimize flow maldistribution as well as pressure drop for high performance of HE. A baffle is often installed in the header part of HE
Kohei MIYAMOTO, Satoshi KITAYAMA, Rihito IZUTSU, Satoshi TABUCHI, Sayaka YAMADA   +4 more
doaj   +1 more source

Flow distribution in microchannel devices with U-shaped manifolds

International Journal of Thermofluids, 2023
This article investigates fluid distribution in multichannel microfluidic devices with U-shaped manifolds. The parameters investigated include Reynolds number, microchannel width, microchannel spacing width, and microchannel length.
Fadi Alnaimat, Bobby Mathew
doaj   +1 more source

Improvement of Flow Distribution by New Inlet Header Configuration with Splitter Plates for Plate-Fin Heat Exchanger

Energies, 2020
The pressure drop increases along with the decrease in the flow maldistribution in the two-stage distributing inlet headers of a plate-fin heat exchanger.
Xiang Peng, Denghong Li, Jiquan Li, Shaofei Jiang, Qilong Gao   +4 more
doaj   +1 more source