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 55 for “"Passive Cooling"”.
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Subambient Passive Cooling Enabled by Polyethylene Aerogels
Subambient cooling is vital for promoting human health and well-being, driving sustainable economic growth, and minimizing food waste. Providing these benefits however, comes with major energetic and environmental costs. The over 1.6 billion air conditioning units currently in use around the world …
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Passive Cooling Applications in Commercial Buildings in Hot Regions
… comes from the buildings and that 70% goes into cooling (Supreme Council of Energy, 2014). Secondly, many modern buildings in the region have glazed glass façades. In line with the emirate's vision for sustainability 2021, Dubai Municipality (DM) Building Department prioritized the improvement of …
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Risk-informed design changes for a passive cooling system
The failure probability of a passive decay heat removal system after a LOCA is evaluated as part of a risk-informed design process for a helium-cooled fast reactor. The system was modeled using RELAP5-3D. The epistemic uncertainties in input parameters as well as the epistemic model uncertainties …
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Numerical and analytical modelling of battery thermal management using passive cooling systems
… the design and modelling of different passive cooling management solutions from single battery to module level. A simplified one-dimensional transient computational model of a prismatic lithium-ion battery cell is developed using thermal circuit approach in conjunction with the thermal …
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Alternative passive cooling concepts for a large rating pressurized water reactor containment
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1995.
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An experimental investigation of a passive cooling unit for nuclear plant containment
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
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A passive cooling design for multifamily residences [sic] in hot, humid climates
… for maintaining comfort. Most of the available passive cooling techniques which are applicable to other climates have been proven to be ineffective in hot, humid climates. This thesis examines the available passive cooling techniques and describes their potential and limitations . This thesis …
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Mashrabiya in passive cooling: Integrating Concepts of Mashrabiya into an Innovative Ceramic Evaporative Screen
Designing a multifunctional outdoor evaporative cooling screen in water-scarce hot-dry regions has posed a significant challenge. In areas where temperatures reach extreme levels during the summer and access to water is limited, the need for passive cooling strategies is urgent. While shading …
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Reliability analysis of a passive cooling system using a response surface with an application to the Flexible Conversion Ratio Reactor
A comprehensive risk-informed methodology for passive safety system design and performance assessment is presented and demonstrated on the Flexible Conversion Ratio Reactor (FCRR). First, the methodology provides a framework for risk-informed design decisions and as an example two design options …
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2-D Coaxial Integration of Medium Voltage Power Electronics Enabled by Field-Driven Design
… properties such as voltage scaling and passive cooling, can be inherited in the power electronics design. The analysis begins at the physics level, reconciling the electrical, thermal, and mechanical fields of the converter with that of the cable. The insulation performance of the …
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CFD analysis of airflow patterns and heat transfer in small, medium, and large structures
… and the Affleck house, this study simulates passive cooling in spaces well-designed for natural ventilation. Heat loads, human models, and electronics are included in the apartment to expand on prior research into natural ventilation in a full-scale building. Two different cases were …
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Design of passive decay heat removal system for the lead cooled flexible conversion ratio fast reactor
… coolant present difficulties for the design of a passive decay heat removal system. In order to achieve passive cooling, enhancements are needed over current designs, such as the S-PRISM and ABR, which utilize passive cooling through the reactor vessel to atmospheric air. Enhancements such as …
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Analysis and design for thermally autonomous housing in resource-constrained communities : a case study in Bhuj, India
… and lack of access to electricity for mechanical cooling. There is a need for housing to provide thermal comfort and health by passive means at low cost. Climate specific passive cooling techniques are well known, but are rarely implemented in informal settlements because of density, lack of …
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A study of the transwall system as a multi-use architectural element
… Fuchs and McClelland, fulfills the function of a passive solar heating device as well as an architectural element the window. The significance of the transwall system, in the author's opinion, lies in its expression of technologies in an architectural way. Several directions for further …
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Development of a meso-scale liquid-fueled burner for electricity generation through the use of thermoelectric modules
… resulted in higher metal temperatures. Without cooling the cold side of the thermoelectric modules, performance increased while the system was heating up, but then dropped after reaching a peak. Cold side cooling improved thermoelectric performance by increasing its temperature difference. …
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Health And Wellness Resort in Siwa Oasis, Egypt
… computational design for form optimization and passive cooling. Field interviews, climate analysis, and structural studies informed the proposal, aiming to preserve cultural identity, reduce environmental impact, and enhance visitor well being. The result is a context sensitive and forward …
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Experiment and simulation study on a novel, effective radiative cooing film
Space cooling consumes a large portion of U.S. household use, and traditional air conditioning system poses a net heating effect to the global climate. Daytime radiative cooling (DRC) is a passive cooling method with zero energy consumption. It features a high ultraviolet visible near-infrared …
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Decreasing the Power Consumption of Hybrid Electric Vehicle Architectures
… main areas for improvement are aerodynamics and passive cooling of electrical systems. Aerodynamics of an Ahmed body is investigated with a drag reduction system proposed utilizing slot jets at the rear of the bluff body . Two separate systems show a decrease in drag of 16 and 25%. The paper also …
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Mixed-Mode Cooling Design for Office Buildings in Arid Climates
… building energy consumer. Mixed-Mode/hybrid cooling is an innovative approach that promotes energy and carbon emission savings while maintaining a satisfactory indoor environment. Such systems maximise the use of passive cooling strategies, operate low energy cooling strategies alternatively …
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Smart coatings for energy saving buildings
… surface provide an effective solution for passive cooling of building indoors and influencing local outdoor microclimate, mitigating urban heat islands effect (UHIE). The primary purpose is to produce pigments according to an environmentally friendly route, using non-toxic raw materials, as …
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