Packing Efficiency
Packing Efficiency - Related Videos
10:39
Single and Two-phase Flow in a Packed Bed Reactor
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA The goal of this experiment is to determine the magnitude of maldistribution in typical packed bed reactors in both single phase and two-phase (gas-liquid) flow and evaluate the effects of this maldistribution on pressure drop. The concepts of residence time distribution and dispersion are introduced through the use of tracers, and these concepts are related to physical...
09:21
Efficiency of Liquid-liquid Extraction
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Liquid-liquid extraction (LLE) is a separation technique used instead of distillation when either: (a) the relative volatilities of the compounds to be separated are very similar; (b) one or more of the mixture components are temperature sensitive even near ambient conditions; (c) the distillation would require a very low pressure or a very high distillate/feed...
01:26
Output Efficiency: Achieving Output Efficiency
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2025
Output efficiency happens when resources are used in a way that balances what people want with how goods are produced. This means the marginal rate of substitution (MRS) matches the marginal rate of transformation (MRT). When this balance is reached, the economy makes the most of its resources without waste.Take the example of bread and milk. If consumers are happy to trade 2 loaves of bread for 1 liter of milk, the MRS is 2. But if producers only need to give up 1 loaf of bread to produce 1...
07:01
Improved Polydimethylsiloxane (PDMS) Double Casting via Silicone Oil Treatment for Densely Packed Microstructure Replication
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2025
This protocol presents an improved demolding procedure for the Polydimethylsiloxane (PDMS) double casting technique by introducing silicone oil as a non-adhesive barrier between PDMS layers. Unlike plasma or chemical surface modification methods, this approach requires no specialized or costly equipment, making it a more accessible and cost-effective alternative.
06:52
Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure
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Cited by 4 •
2018
A protocol has been developed to measure gases, odors, and nutrient composition in lab-scaled bedded manure packs, which can be used to study ways to improve air quality in commercial cattle facilities using deep-bedded manure packs.
FAQs
Particle geometry, relative size, arrangement within the repeating unit cell, and coordination number all influence how much space remains unoccupied. Coordination number describes how many neighboring particles surround a given particle, while geometry determines whether those neighbors can fit closely. Together, these factors explain why different crystal structures show different occupied volumes and densities.
Interstitial voids are empty spaces between particles in a crystal arrangement. Their size and distribution depend on how atoms, ions, or molecules fit together, so they can substantially change the unoccupied volume of a unit cell. Examining these voids helps explain differences in packing behavior among solids and the effects of particle size and geometry.
Different lattices may arrange comparable particles with different degrees of empty space inside their repeating unit cells. A structure with more efficient packing can place greater particle volume into the same overall cell volume, producing a higher density. Comparing lattice geometry, coordination number, and interstitial voids therefore connects crystal arrangement with measurable material properties.
A calculation compares the volume occupied by the particles assigned to a repeating unit cell with the total volume of that cell. Unit-cell dimensions provide the overall volume, while particle size and the number or arrangement of particles provide the occupied volume. This comparison allows different crystal structures to be evaluated on a consistent basis.
In ionic and metallic solids, the arrangement of particles influences density, crystal structure, and stability. Comparing packing behavior shows how particle sizes, geometry, and neighboring relationships affect the space used by the solid. The same analysis provides a framework for relating microscopic lattice organization to bulk properties across different types of materials.
Changes in arrangement can alter empty space, density, and the stability of a solid, making packing efficiency relevant to phase behavior. In materials design, comparing structures helps identify arrangements that provide particular physical properties. This concept therefore links unit-cell organization with efforts to understand or tailor the behavior of crystalline materials.