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 198 for “"Power requirements"”.
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Power requirements in the cement industry
Thesis (M.S.)--University of Kansas, Mechanical Engineering, 1919. ; Includes bibliographical references.
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Control power requirements for the velocity vector roll
A method for determining the maximum control moments required for an aircraft to perform a velocity vector roll is investigated. The velocity vector roll is assumed to occur at constant angle of attack, constant velocity, and zero sideslip. A simplified set of equations is developed for the non …
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Power requirements for a rapid-fire projectile toy concept
… hundred per minute. A portable, small, and safe power system must be developed for this mechanism before it is implemented in new children's products. Power requirements for the device have been estimated based on safety guidelines to be 12 Watts. This rate is feasibly supplied by a …
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Modeling the power requirements of a rotary feeding and cutting system
… and cutting system (RFCS) to identify the power demand of the RFCS with limited or no required field or laboratory data. Two separate RFCS were investigated, incorporated with either a low-speed cutting process (LSCP) or a high-speed cutting process (HSCP). The results from the laboratory …
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Heat transfer in mixing vessels at low Reynolds numbers. An experimental study of temperature profiles heat transfer rates and power requirements for mechanically agitated vessels operating at low Reynolds numbers.
… of all the geometrical parameters on the mixing power and heat transfer, data from the published literature sources will be utilized and combined with the results from this study. Thus, reliable empirical correlations will be obtained which are applicable over the widest range of operating …
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ASSESSING THE IMPACT OF TACTICAL MISSION PROFILES ON THE DEVELOPMENT OF POWER PREDICTION SOFTWARE
… (E2O) needs to conduct an analysis of small unit power requirements. This study assesses both current and future (approx. 2024) small unit configurations, and the impact that operational conditions and tactical scenarios have on power requirements, beyond a straightforward reference to technical …
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A power assessment of machining tools
… This project experimentally measures the power consumption, which is related to the energy consumption, of machines in the Laboratory for Manufacturing and Productivity, in order to determine the energy cost of the machines. This project then compares the results found experimentally to …
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A preliminary design tool for resistance and powering prediction of catamaran vessels
… over competitive designs in attributes such as power requirements, economy, space availability and seakeeping. The rapid growth of the market has led to the need for an expanded range of catamaran designs in terms of size, speed, and payload diversity (passengers, vehicles, containers). However, …
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Development of a fuel cell plug-in hybrid electric vehicle and vehicle simulator for energy management assessment
… on a short-term moving average of the vehicle power requirements. The second method utilizes an affine function of the short-term and long-term moving average vehicle power requirements. The development process of these methods has required the creation of a vehicle simulator capable of …
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Impurity-induced layer disordering and hydrogenation in the indium aluminum gallium phosphide material system: Visible spectrum semiconductor lasers
… light sources can be made with extremely low power requirements. Applications for such sources include high-density optical storage units and optical communications. Additionally, the use of multiple-stripe arrays makes high-power ($\gg$200 mW per facet) coherent semiconductor light sources a …
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Energy Conservation By Intermittently Recirculating and Aerating an Aquaponics System with an Airlift
… circulation was designed to reduce electrical power requirements for aquaponics by eliminating the need for a water pump. The airlift performed better than predicted and achieved water flow rates of 10 L/min at 25 °C, in comparison to the theoretical design performance 2.65 L/min.</p> <p>Koi …
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Electronics for a Versatile and Robust Retarding Potential Analyzer for Nano-Satellite Platforms
… called an I-V curve. Traditionally, the size and power requirements of retarding potential analyzers has limited their use to larger satellites. In this thesis, the electrical design and basic testing of a retarding potential analyzer for use on resource- limited cubesat platforms are described. …
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Design of an axial-flux generator for a small-scale wind electrolysis plant
… design of a wind generator to meet electrolyser requirements. These are the hydrogen production rate, the power requirements and the operating temperature. This requires the analysis of the load, sizing and characterizing of an electrolyser and finally, the design of a wind generator that meets …
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Simulation of Flowing Plasma Discharges With Applications to Lasers, Fuel Cells, and Microthrusters
… - mNs thrust for station keeping with nominal power requirements (few Watts). MDs deposit power to flowing Ar (at 10s Torr), and the incremental velocity, gas temperature, and thrust are studied. Due to the large surface-to-volume ratio and low Reynolds number, heat conduction to the walls and …
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Adaptive primary side control for a wireless power transfer optimization
A resonant inductive wireless power transfer system, consisting of a primary (transmitter) circuit and secondary (receiver) circuit, was designed and implemented. This document also contains a novel indirect feedback method to optimize the power efficiency of a wireless transfer system. The …
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Experimental and Numerical Evaluation of Electrothermal-Swing Adsorption for Capture and Recovery or Destruction of Organic Vapors
… vapor concentrations, temperature profiles, power requirements, voltage requirements, and current requirements for ESA desorption cycles. The model is very helpful in the initial stages of design of an ESA system to reduce cost and time and to more effectively evaluate experimental results …
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Design of control electronics for the Ram Energy Distribution Detector
… called an I-V curve. Traditionally, the size and power requirements of ram wind sensors has limited their use to larger satellites. In this thesis, the electrical design and basic testing of a cubesat compatible RWS known as the ram energy distribution detector (REDD) are described. The mechanical …
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A computational fluid dynamics model for sediment movement based on the unit stream power approach
… numerical model based on the unit stream power approach for the prediction of scour profiles. The unit stream power approach is employed to define the incipient motion criteria for the sediment particles by comparing the available applied stream power with the individual particle power …
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Clock division as a power saving strategy in a system constrained by high transmission frequency and low data rate
… constraints include channel attenuation, power requirements, and backward compatibility. As a result these systems have unused band- width, leading to inefficient use of power. In this thesis, I propose to slow the internal operating frequency of a cochlear implant receiver in order to …
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An economic study of a proposed 2000-KW turbo-generator unit in the Virginia Polytechnic Institute central heating and power plant
… Polytechnic Institute Central Heating and Power Plant is to provide steam for heating the various building: on the campus. The plant also furnishes the campus and the community of Blacksburg with a portion of their power requirements, the campus with hot water, and the college laundry with …
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