Results 51 to 60 of about 23,246 (292)

Numerical Investigation on Thermal Performance Design of Cryogenic Compact Heat Exchangers with Serrated-Fin Channels

open access: yes, 2020
Traditional empirical formulas of Colburn heat transfer factors will lead to a design deviation for cryogenic heat exchangers. This paper employs the computational fluid dynamics (CFD) technique to numerically study the thermal performance of cryogenic ...
Wang, Zhe   +8 more
core   +1 more source

Performance improvement of transcritical vapor generator by a novel double-heated annular configuration

open access: yesCase Studies in Thermal Engineering
A novel double-heated annular configuration is proposed for the vapor generator of transcritical CO2 power cycle. The idea originated from that an annulus is more resistant to the deterioration of supercritical heat transfer than a circular tube, and in ...
Yue Pan   +3 more
doaj   +1 more source

Numerical heat transfer analysis of transcritical hydrocarbon fuel flow in a tube partially filled with porous media

open access: yesOpen Physics, 2016
Hydrocarbon fuel has been widely used in air-breathing scramjets and liquid rocket engines as coolant and propellant. However, possible heat transfer deterioration and threats from local high heat flux area in scramjet make heat transfer enhancement ...
Jiang Yuguang   +4 more
doaj   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

open access: yesFEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai   +4 more
wiley   +1 more source

The Effects of Buoyancy on Laminar Heat Transfer Rates to Supercritical CO2 in Vertical Upward Flows

open access: yes, 2023
Buoyancy effects in vertical, upward laminar flows can result in an augmentation in heat transfer rates to supercritical CO2 (sCO2) near its pseudocritical temperature (TPC).
Krishnamoorthy Viswanathan   +1 more
core   +1 more source

Analysis of heat transfer to supercritical carbon dioxide by the STAR-CCM+ CFD code

open access: yes, 2011
The Supercritical Water Reactor (SCWR) is one of the six conceptual designs proposed for Generation IV for which a considerable amount of research and development is being spent for tackling the challenging aspects of the related technology.
N. Forgione   +3 more
core   +2 more sources

Optimal Design Arrangement for Suppressing Supercritical CO2 Heat Transfer Deterioration by Deep Learning and Genetic Algorithm

open access: yesEnergies
Supercritical carbon dioxide (CO2) is a promising working fluid for advanced power cycles. However, under high heat flux and low mass flux, its heat transfer performance can deteriorate severely, posing significant risks to system safety and efficiency ...
Xinhuan Shi   +4 more
doaj   +1 more source

Heat exchangers for cooling supercritical carbon dioxide and heat transfer enhancement: A review and assessment

open access: yesEnergy Reports, 2021
Supercritical and trans-critical carbon dioxide cycles are widely used for refrigerators, heat pumps and power plants, of which the heat exchangers are key components.
Wenguang Li, Zhibin Yu
doaj   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

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