Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Louvers"”.
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Natural ventilation through windows in a classroom (CFD analysis crossventilation of asymmetric openings: Impact of wind direction and louvers design)
… in a façade such as an angle and geometry of louvers, building orientation and wind direction. Therefore, the geometry of louvers and wind direction can have a considerable influence on the cross-ventilation flow. Many studies on natural ventilation have been released in the past, however, a …
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Flow, Heat Transfer, and Pressure Drop Interactions in Louvered-Fin Arrays
… pressure drop; and the effect of using convex louvers rather than flat (offset-strip) fins. Flow visualization is performed using dye in a water tunnel, and pressure drop is measured in a wind tunnel. Heat transfer is inferred from mass transfer data obtained using the naphthalene sublimation …
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Heat Transfer Measurements and Optimization Studies Relevant to Louvered Fin Compact Heat Exchangers
… is typically the air side of the heat exchanger, louvers are manufactured into the fins. Louvered fins initiate the growth of new boundary layers such that the average convective heat transfer coefficient is higher than that which would occur for a continuous fin. Approximately 85% of the total …
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Spatially Resolved Heat Transfer Studies in Louvered Fins for Compact Heat Exchangers
… affected the heat transfer of individual louvers. In the entrance region of the louvered array, the effects of the flow field were dominant while in the fully developed region of the louvered arrays, the effects of the thermal field were dominant. A companion two-dimensional CFD study …
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Pulseback of panel bed contactor for carbon and water
… carbon retained within a set of parallel louvers. Construction permits contaminants in the entering stream of water to be adsorbed on carbon particles, starting from the entrances of the spaces between the louvers. A pulseback technique is used to remove the region containing …
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Pulseback cleaning of panel bed filter for treating a liquid
… entry of water were provided by vertical support louvers. A pulseback technique was used to rid the liquid entry surface of the sand. The pulseback consisted of a reverse transient flow of liquid across the panel bed of sand. The time of duration of the pulseback was a maximum of 100 milliseconds. …
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An experimental study of lifting and moving forces in air conveying systems
… experiments are limited to straight holes and louvers located under the bottom of aluminum concave-bottom cans. In some tests, a flat disc has been fixed to the bottom of the cans. Measurements are made of the can motion on an actual section of conveyor.
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Performance investigation of a naturally driven building ventilation terminal.
… identified as the louver angle, distance between louvers and the number of louvers (now subject to patent number 0809311.4). Each of these geometrical variations provided an increase in performance over the benchmark case in the range of 27 - 45%. An optimum configuration of these parameters did …
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Evaluation of Internal Fin Geometry for Heat Transfer Enhancement in Automobile Exhaust Energy Harvesting Systems
… path and aligning it with the plane of the louvers. Herringbone fins are used to lengthen the path of airflow allowing for greater residence time and better mixing of the flow. They also provide for greater wetted surface area achieving higher heat transfer. The flow and heat transfer …
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Measurements and Predictions of the Heat Transfer at the Tube-Fin Junction for Louvered Fin Heat Exchangers
… Vortices created at the leading edge of the louvers augmented heat transfer by thinning the tube wall boundary layer. Results indicate that an augmentation ratio of up to 3 times can occur for a tube wall of a louvered fin compact heat exchanger as compared to a flat plate.
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Thermo-hydraulic study of inclined louvered fins
… Dividing the fin surface into smaller units, louvers, has proven to be very effective. These interrupted fin designs result in increased heat transfer due to boundary layer restarting and at higher Reynolds numbers they promote self-sustained flow unsteadiness which further increases the heat …
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Understanding Behavior and Nest Box Usage in Three Species of Owl Monkeys: Azara's Owl Monkey (Aotus azarai), Spix's Owl Monkey (A. Vociferans) and Nancy's Owl Monkey (A. Nancymaae)
… light cycle and the rooms are equipped with louvers, allowing the owl monkeys to experience a "dusk" period in the lighting. While A. azarai spend more of their sleeping time in dense foliage in the wild compared to A. nancymaae and A. vociferans, in the current study, although they were …
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Understanding Behavior and Nest Box Usage in Three Species of Owl Monkeys: Azara's Owl Monkey (Aotus Azarai), Spix's Owl Monkey (A. Vociferans) and Nancy's Owl Monkey (A. Nancymaae)
… light cycle and the rooms are equipped with louvers, allowing the owl monkeys to experience a "dusk" period in the lighting. While A. azarai spend more of their sleeping time in dense foliage in the wild compared to A. nancymaae and A. vociferans, in the current study, although they were …
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Optimising the airflow performance of ventilators for natural ventilation in buildings.
… one or a combination of basic components such as louvers, insect-screens or noise baffles. An extensive literature review indicated that the airflow performance of combinations of such components has neither been thoroughly determined nor fully understood, making it difficult to accurately predict …
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Transparency
This project is an investigation into issues surrounding the placing of a building into the context of a site. The study manifests itself through the design of a museum for Phoenician sailing ships and their artifacts.
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Light, Shadow and Wind in Building Design
Design is about understanding a space. It is about integration of light and air in building design. It is about light, shadow, reflection. It is about wind, its movement and escape. Through designing this project I was able to explore how sun, wind and light can be used effectively in a building …