Results 81 to 90 of about 18,592 (200)

Counter-Flow Cooling Tower Test Cell

EPJ Web of Conferences, 2014
The article contains a design of a functional experimental model of a cross-flow mechanical draft cooling tower and the results and outcomes of measurements.
Dvořák Lukáš, Nožička Jiří
doaj   +1 more source

Reverse Electrodialysis: Co- and Counterflow Optimization of Multistage Configurations for Maximum Energy Efficiency

Membranes, 2020
Reverse electrodialysis (RED) is one of the techniques able to harvest energy from the salinity gradient between different salt solutions. There is a tradeoff between efficiency and generated power in a RED stack. This paper focuses on efficiency.
Joost Veerman
doaj   +1 more source

Moire bands in twisted double-layer graphene

, 2010
A moire pattern is formed when two copies of a periodic pattern are overlaid with a relative twist. We address the electronic structure of a twisted two-layer graphene system, showing that in its continuum Dirac model the moire pattern periodicity leads ...
A. H. MacDonald, Arita, Eisenstein, Ghosh, Hass, Lopes Dos Santos, McCann, R. Bistritzer, Shallcross, Sprinkle, Trambly de Laissardie  re, Wang   +11 more
core   +2 more sources

Catalytic Activity of Water‐Dispersed Palladium Nanoparticles with Different Sizes and Shapes in the Semihydrogenation of Alkynes

ChemCatChem, Volume 17, Issue 22, November 24, 2025.
Mono‐ and biphasic semihydrogenation of alkynes is catalyzed by water‐dispersed palladium nanoparticles of various size, shape, and surface coatings at 1 and 50 bar hydrogen pressure. Spherical nanoparticles of 5 nm diameter were most efficient. Ultrasmall nanoparticles (2 nm) showed an increase in metallic character due to reduction by hydrogen during
Niklas Kost, Florian Lehmann, Rui Guo, Kateryna Loza, Marc Heggen, Thomas Seidensticker, Matthias Epple   +6 more
wiley   +1 more source

Concept of CFD model of natural draft wet-cooling tower flow

EPJ Web of Conferences, 2014
The article deals with the development of CFD model of natural draft wet-cooling tower flow. The physical phenomena taking place within a natural draft wet cooling tower are described by the system of conservation law equations along with additional ...
Hyhlík T.
doaj   +1 more source

Concentration in Renal Counterflow Systems

Biophysical Journal, 1966
In this paper earlier work on two-loop counterflow systems is extended to n-loop systems. It is shown that a large class of such systems in which exchange between the flow tubes is passive is unable to concentrate or dilute.
openaire   +2 more sources

Numerical study on the influence of flow direction and fluid type on heat transfer and pressure drop in a two-tube spiral heat exchanger with innovative conical turbulators

Case Studies in Thermal Engineering
In this research, numerical analysis will be conducted on the thermal and hydraulic performance of a spiral two-tube heat exchanger. The study employs an innovative turbulator design with curved outer blades and a semi-conical section with two openings ...
Reza Haddadvand, Neaman Sohrabi, Terry X. Yan, Fatemehh Nadalinia, Seyed Hossein Hashemi Karouei   +4 more
doaj   +1 more source

Thermal calculation of heat exchangers with simplified consideration of axial wall heat conduction

E3S Web of Conferences, 2018
The usual thermal design and rating methods [1, 2] for heat exchangers neglect axial wall heat conduction in the separating walls and external shells of recuperators and in the solid matrix of regenerators. This may lead to undesirable undersizing.
Roetzel Wilfried, Na Ranong Chakkrit
doaj   +1 more source

Outflows and Massive Stars in the protocluster IRAS 05358+3543

, 2013
We present new near-IR H2, CO J=2-1, and CO J = 3-2 observations to study outflows in the massive star forming region IRAS 05358+3543. The Canada-France-Hawaii Telescope H2 images and James Clerk Maxwell Telescope CO data cubes of the IRAS 05358 region ...
Adam G. Ginsburg, Bally, Casoli, Chi-Hung Yan, Henning, Hosokawa, Jiang, John Bally, Jonathan P. Williams, Klein, Kumar, Lucas, Luhman, Mao, Minier, Osterbrock, Parker, Porras, Qiu, Robitaille, Rohlfs, Scalise, Shepherd, Smith, Valdes, Wang, Williams, Wouterloot, Yan   +28 more
core   +1 more source

Analysis of Heat Transfers inside Counterflow Plate Heat Exchanger Augmented by an Auxiliary Fluid Flow

The Scientific World Journal, 2014
Enhancement of heat transfers in counterflow plate heat exchanger due to presence of an intermediate auxiliary fluid flow is investigated. The intermediate auxiliary channel is supported by transverse conducting pins.
A.-R. A. Khaled
doaj   +1 more source