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 51 for “"Test cell"”.
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Design of a high-speed turbomachinery test cell and components
… interconnecting couplings to deliver 1650 HP to test rotors at speeds from 12000 to 20400 rpm in either rotational direction. A multistage axial-flow compressor was assumed as the load for initial design calculations. A vibration analysis was conducted to insure that no torsional resonances …
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A test-cell installation of a gas turbine engine to investigate the performance advantages of low aromatic fuel
… the rst objective was to establish a working test cell with which to complete the research. Once operational, the engine was instrumented to study the thermal loading on the combustor, and a database of soot emissions measurements was populated while operating on a matrix of fuels.Experimental …
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Pulsed electric field treatment of Arthrospira platensis and Saccharomyces cerevisiae
… bio-membrane and cause the death of microbial cells without significant thermal effect, which can be used for inactivation of microorganisms and facilitation lysis of microbial cells for lipid extraction. The present study aimed to investigate the efficiency of PEF treatment of Arthrospira …
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Design and validation of an air window for a molten salt solar thermal receiver
… power consumption. A design for an experimental test cell is presented, including a method of molten salt simulation and vapor concentration measurement. The test cell demonstrated the ability to lower the mass fraction of vapor outside the aperture by 77.8% ±6.2%. A high rate of cooling was …
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Improved Desiccant Coatings for Heat and Water Vapour Transfer on the Matrix Surfaces of Air-To-Air Regenerative Wheels
… not submerged by the coating material. Because testing energy wheels under steady state operating conditions has proved to be difficult, time consuming and costly in the past, a small parallel flow test cell is used to measure the transient response of coated substrate aluminum sheets after a …
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The Influence of Food Physical Properties on Transfer Efficiency and Adhesion in a Tumble Drum Process
… by applying voltage to a powder resistivity test cell (Electrostatics Solutions, Bassett, Southampton, Hampshire, U.K.) containing 5 cm3 of ground food item. The actual amount of current exiting the test cell was measured using an electrometer (Model 614, Keithley Instruments, Inc., …
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A system identification technique for predicting transient operation of gas turbine engines
… identification techniques in conjunction with test cell data has been successfully demonstrated. Test cell data were obtained for both transient and steady-state operation from two F402-RR-406A USMC AV-8B engines at the Naval Aviation Depot (NADEP), Cherry Point, North Carolina. One engine was …
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Design and experimental evaluation of a dynamic thermal distortion generator for turbomachinery research
… design concepts and also the combustion test cell are discussed. Instruments and controls were developed and installed to regulate the distortion generator’s operation and to obtain data. The complete geometry of the thermal distortion generator and the layout of the combustion test cell …
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The Design of Daylight Transporting Systems for Deep Space Illumination
… window opening on one side was constructed as a test cell. Inside, sensors were set up to allow light measurement at task level along the depth of the room. Light rays were deflected by the geometry of the ceiling cavity, through a number of internal reflections on the highly reflective film …
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Simulation and design methods for free-electron laser systems
… using the example of an electrostatic cathode test cell and drawings made using the Los Alamos National Laboratories design tool, Poisson Superfish. After reviewing the principles involved and system constraints, a new test cell is designed for use with future NPS experiments. The effects of …
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Engineering design criteria for high temperature thermoelectric generation based on molten compounds
… The performance of a laboratory-scale TE test cell based on molten SnS is demonstrated which reports Seebeck coefficient, electrical conductivity, thermal conductivity and, for the first time, the Figure of Merit and TE conversion efficiency of a molten semiconductor at the device level. …
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Unique airflow visualization techniques for the design and validation of above-plenum data center CFD models
… process of a CFD model for a small data center test cell located in Cambridge, Massachusetts. The validation method features point velocity and temperature measurements and the use of small neutrally-buoyant bubbles to visualize the airflow patterns above a raised-floor plenum. The data center …
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Measurements and modeling of deposition rates from near-supercritical, aqueous, sodium sulfate and potassium sulfate solutions to a heated cylinder
… the solubility and deposition experiments, the test cell is a six-port chamber which was fabricated by modifying a 1.91 cm (3/4 inch) diameter Swagelok cross. One port was used to mount a 0.200 inch (5.08 mm) diameter internally heated cylinder into the center of the chamber and the remaining …
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Construction and operation of the VPI & SU high-speed turbomachinery test facility
… of the VPI&SU highspeed turbomachinery test facility is reported. Fuel, lubrication and hydraulic systems have been designed to meet the requirements of the drive engine (a free power turbine gas turbine engine) and the test compressor. An overspeed system for monitoring and control of …
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Development, Testing and Calibration of Oxford Brookes V-Twin Engine
… and electronic development of the engine to run, test and calibrate the engine for the first time. This research investigated the mechanical development and calibration requirements of an otherwise blank sheet package, to derive a suitable base calibration for test cell operation. A bespoke …
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Emissions and efficiencies of domestic appliances burning various fuels in South Africa
… burn less fuel, and appliance emission rates. A test cell was designed and built to measure efficiencies and emissions of various fuel/appliance combinations during cooking and space heating tests representative of field operating conditions. A range of fuels, liquid petroleum gas (LPG), …
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The effect of altitude on the performance of a spark ignition engine using an alcohol-blended fuel
… under three different carburation settings. Tests have been performed in an altitude simulation dynamometer test cell. Comparative assessments are made of the effects of altitude on fuel economy, exhaust CO emission and engine knock response in terms of knock-limited spark advance with- a …
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Predictive control for a throttle regulator in vehicle testing
… of a vehicles' speed in an environmental test cell with a wind tunnel. The vehicle speed is regulated through the throttle while the vehicle torque is controlled with a dynamometer. The predicted throttle position for the requested speed is based on torque, speed, and throttle position …
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A study on organic fouling of reverse osmosis membrane
… in two lab-scale reverse osmosis (RO) membrane cells in different dimensions. The first test cell was 0.1 m in length and was treated as a homogenous system while the second one was a 1-m long cell which was designed to measure five local permeate flux along the channel. It was found that some …
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