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 20 of 70 for “"chimney"”.
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Chimney Design and Chimney Formula Comparison
The object of this thesis, then is to compare chimney wall sections conforming with the accepted rules as quoted by Kent, Kidder, Molesworth, and Christie, with wall sections obtained by formulas that were derived by means of an analysis similar to that in the preceding paragraph; to show chimney …
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The Chimney
There is nothing worse, I think, than paraphrasing a poem, much less a whole manuscript of poems. Doing so wrongly implies that poetry exists mainly as ideas, and not, as it truly does, as words. Thus, that an "abstract" should summarize the writing in this thesis seems to me not only impossible, …
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Wind- Chimney (Integrating the Principles of a Wind-Catcher and a Solar-Chimney to Provide Natural Ventilation)
<p>WIND-CHIMNEY</p> <p>Integrating the principles of a wind-catcher and a solar chimney to provide natural ventilation</p> <p>Fereshteh Tavakolinia</p> <p><strong>Abstract</strong></p> <p>This paper suggests using a wind-catcher integrated with a solar-chimney in a single story building so that the …
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Green Chimney - Localized Carbon Sequestration in closed Environment
… In this research, a new technology -called Green Chimney, is proposed to reduce CO2 emission that is produced from a generator. The flue gas from a portable electric generator that contained CO2 is channeled into transparent glass tanks with 50,000ppm (5% vol) as a starting level. Meanwhile …
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Determination of earthquake intensities from chimney damage reports
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1979.
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The Application of the Solar Chimney for Ventilating Buildings
… the potential applications of the solar chimney for the naturally ventilating a building. Computational fluid dynamics (CFD) was used to model various room configurations to assess ventilation strategies. A parametric study of the solar chimney system was executed, and three-dimensional …
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An experimental investigation of a solar chimney natural ventilation system
Natural ventilation driven by a solar chimney attached to a single-room building was studied experimentally using a small-scale model. The experiments were performed using a recently developed fine-bubble technique in which fine hydrogen bubbles are produced electrolytically in salt solution to …
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Controlling CRUD vapor chimney formation in LWRs through surface modification
Fouling has been a persistent problem for fluid-solid interfaces, varying from heat exchangers to ship hulls. In nuclear power plants, buildup of CRUD can accelerate corrosion, increase pressure drops, cause axial power shifts, and increase radiation dose to workers. In this experiment, we studied …
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The Prediction and Occurrence of Chimney Subsidence in Southwestern Pennsylvania
… counties. Subsidence incidents, known as chimney caves, are in the form of sinkholes and develop above abandoned room-and-pillar mines. Chimney caving is the most dominant type of subsidence in southwestern Pennsylvania, yet there are no accurate means available to predict their …
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AI-Based Framework for Identifying Wood Burning Appliances through Chimney Recognition
… computer vision framework that leverages visible chimney features as proxies for wood stove usage. Using data from drones, vehicle-based videos across urban and rural areas, we trained object detection models (YOLOv11) and integrated them with Vision Language Models (VLMs) for semantic …
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Numerical Analysis of Airflow and Output of Solar Chimney Power Plants
… fluid dynamics was used to simulate solar chimney power plants and investigate modeling techniques and expected energy output from the system. The solar chimney consists of three primary parts: a collector made of a transparent material such as glass, a tower made of concrete located at the …
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Clinical Aspects on Chimney Stent Graft Technique in Endovascular Repair of the Aorta.
… alternative if they are not fit for open repair. Chimney graft technique fills this gap and allows the sealing zones for aortic stent graft to be extended as required. The aim of the present thesis is to study the applicability, safety and durability of CG technique in urgent cases with complex …
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Flight Vocalizations and Displays of Adult Chimney Swifts (Chaetura Pelagica): Description and Function
… as during aerial displays with conspecifics, Chimney Swifts (Chaetura pelagica) often utter a twitter call consisting of a series of high-frequency chip notes. However, little is known about the possible function(s) of swift flight displays and their twitter call. My objectives were to record, …
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Facultative adjustment of pre-fledging mass recession by nestling Chimney Swifts (Chaetura pelagica)
… were to determine if mass recession by Chimney Swift <em>(Chaetura pelagica)</em> nestlings is intrinsically controlled or facultatively adjusted by nestlings, and if mass recession is driven by changes in parental behavior (i.e., reduced provisioning rates) or nestling behavior (i.e., …
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Aspects of municipalities associated with occupancy of Chimney Swifts and Common Nighthawks in Illinois
Aerial insectivorous birds like the Chimney Swift (Chaetura pelagica) and Common Nighthawk (Chordeiles minor) are experiencing population declines across North America. While causes of declines are unknown, habitat availability is likely a contributing factor. Both species breed in urban areas. …
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Living coal : Robert Boyle, John Holland, and the bodily passages of chimney sweep literature, 1684-1824
… the extraordinary and tragic effects of chimneys infused with living coal upon young chimney sweeps. In so doing, I show how writers, especially John Holland, registered the dynamic interrelationship between chimney sweeps, chimneys and coal as bodily passages. To assist our imagining of …
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Sedimentology and micromorphology of drumlin sediments at Chimney Bluffs State Park, New York, United States of America
The drumlin sediments at Chimney Bluffs, New York appear to represent a block-inmatrix style glacial melange. This melange comprises sand stringers, lenses and intraclasts juxtaposed in an apparently massive diamicton. Thin section examination of these glacigenic deposits has revealed …
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Exploring Alternative Designs for Solar Chimneys using Computational Fluid Dynamics
Solar chimney power plants use the buoyancy-nature of heated air to harness the Sun's energy without using solar panels. The flow is driven by a pressure difference in the chimney system, so traditional chimneys are extremely tall to increase the pressure differential and the air's velocity. …
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