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 “"Cooling Devices"”.
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Development and Validation of a Brain Phantom for Therapeutic Cooling Devices
Tissue cooling has been proven as a viable therapy for multiple conditions and injuries, and has been applied to the brain to treat epilepsy and concussions, leading to improved long-term outcomes. To facilitate the study of temperature reduction as a function of various cooling methods, a thermal …
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Thermoelectric cooling devices: thermodynamic modelling and their application in adsorption cooling cycles
… framework for modeling the solid state cooling devices namely thermoelectric cooler, the pulsed thermoelectric cooler, thin film thermoelectric device, and an electro-adsorption chiller (EAC) such that their performances can be analyzed and understood. Using the thermodynamic modeling …
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Impact of surface area and porosity on the cooling performance of evaporative cooling devices
Evaporative cooling devices are low-cost, low-energy solutions for post-harvest storage of fruits and vegetables on farmlands. Surface area and porosity are two design parameters that affect the cooling devices' evaporation rate and cooling performance. Both design parameters lack prior systematic …
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A critical appraisal of the use of displacement ventilation in commercial buildings
… to overcome this problem with supplementary cooling devices have presented a risk of negating the air quality benefits and the nature of these risks are exposed using smoke visualisation techniques. It is concluded that it is inaccurate to describe the use of displacement ventilation system …
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Solar-Powered Critical Cooling: A Theoretical Feasibility Study for Human Thermal Regulation
… there no opportunity to provide emergency cooling of a human due to the slow mass flow rate needed to cool air in a single stream. As such, status-quo attempts to cool humans with general-purpose air conditioning will always be an inefficient use of energy. By focusing on keeping people …
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Molecular Dynamics Study of Solid-Liquid Heat Transfer and Passive Liquid Flow
… is a challenging problem in boilers, electronics cooling, concentrated photovoltaic and other power conversion devices. Heat transfer by phase change is one of the most efficient mechanisms for removing heat from a solid surface. Futuristic electronic devices are expected to generate more than …
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A RESIDENTIAL ELECTRICAL LOAD MODEL
… residents determine the settings of heating and cooling devices.</p><p>A general availability function is developed to estimate the number of persons available in the residence at a particular time. Proclivity (tendency) functions are developed to specify the probability that an appliance will be …
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Particle image velocimetry for natural convection in a cube at high Rayleigh numbers
… conditioning and ventilation systems, electronic cooling devices, heat exchangers and thermal storage. In the present work an experimental investigation of natural convection developed in an air filled cube of side H=0.35m is conducted using Particle Image Velocimetry (PIV) to measure the velocity …
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Multilevel capacitor-clamped DC-DC boost converter structure with soft-switching technique implementation for high power density achievement
… frequency is applied. However, the switching devices suffer high semiconductor losses when hard-switching technique is used. Consequently, the cooling device volume is increased as well. Due to this problem, this study also proposes soft-switching technique in the 4-level CCBC for …
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Sensing Buildings: Environmental Impact of Sensor Technologies and Data Infrastructure in Buildings
… embodied carbon solutions, improved heating and cooling devices offer cost and energy effective building services. Above all, “smart” devices promise remote control, oversight, and optimization of building operations. With the rising implementation of AI solutions to every sector, it is important …
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Transverse Thermoelectric Effects for Cooling and Heat Flux Sensing
… industrial and commercial uses of thermoelectric devices to date. This project focuses on investigating transverse thermoelectric effects for localized cooling and heat flux sensing. Thermoelectric cooling devices are useful when their advantages (small size, solid state, active temperature …
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Oscillating Heat Pipe Performance with Evaporator Section Modifications
… and lifespan. Traditional thermal management devices, such as the extruded-fin heat sink, are incapable of maintaining the safe operating temperature range for current and future high heat flux cooling applications. A device that has the capability to meet this growing need is the oscillating …
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Micro-Evaporator Design and Investigation of Phase Change in Tailored Microchannels
… implementation in next generation high heat flux cooling schemes. Promising research has been conducted in the area of MEMS cooling devices, taking advantage of the increased heat transfer characteristics in microfabricated structures. While significant advances in microchannels can be found in …
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Buoyancy-thermocapillary convection of volatile fluids in confined and sealed geometries
… recently due to its relevance for two-phase cooling. Many of the modern thermal management technologies exploit the large latent heats associated with phase change at the interface of volatile liquids, allowing compact devices to handle very high heat fluxes. To enhance phase change, such …
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Solidification of eutectics utilizing directional solidification and confining templates for optical metamaterial applications
… a copper inverse opal for integrated electronic cooling devices.
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Prediction and mitigation strategies for the transient thermal performance of low thermal resistance microchannel evaporators
… solution for high heat flux microelectronic devices such as laser diodes. The high heat transfer rates, nearly isothermal flow conditions, high surface area-to-volume ratios, and lower required pumping powers facilitate smaller component systems while more efficiently cooling devices and …