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 43 for “"flow meter"”.
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Design of a Resistance-Based High Temperature Liquid Metal Flow Meter
Flow rate is a parameter that is vital to measure in high temperature pumped liquid metal systems, yet traditional flow meters are unable to perform at these extreme conditions. As a part of the Atomic Simulation & Energy (ASE) Research Group here at MIT, this research seeks to develop a flow meter …
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The feasibility of micromachined dynamic resonant beam coriolis true mass flow meter
… such as pressure sensors and accelerometers. MEMS flow sensing has emerged as a field of interest in microfluidics, with a variety of sensing methods being miniaturized, such as thermal anemometry, ultrasonic sensing and flow measurement based on the Coriolis effect. Coriolis sensing …
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Investigation of performance of an ultrasonic flow meter for potential molten salt reactor applications
… what the design, there is a need to measure the flow rate of the salt during operation. The nature of the salt greatly complicates the use of a flow meter that must be submerged in the salt. Ultrasonic flow meters have been used for decades with a variety of fluids. These clamp on the outside of …
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Measurement of total hydrocarbon emissions with MEMS using a portable FID and a novel exhaust flow meter
… Model 3030PM hydrocarbon analyzer and McCrometer's V-Cone flow meter. The Signal Model 3030PM analyzer uses a heated flame ionizing detection scheme to measure hydrocarbons. The V-Cone is an obstructive, differential pressure flow meter that reshapes the flow profile, therefore conditioning …
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A virtual flow meter to develop velocity-index ratings and evaluate the effect of flow disturbances on these ratings
Stream flow records are typically estimated with the use of empirical rating curves. The conventional rating method relates stage to discharge, however at sites prone to flow reversals, changes in stream bed roughness, backwater, and tidal effects, a stage-discharge rating is not unique and a …
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Analysis of vortex shedding in a various body shapes
… shape of bluff body that can be used for vortex flow meter applications. Numerical simulations of bluff body shapes such as circular, rectangular and equilateral triangular have been carried out to understand the phenomenon of vortex shedding. The simulation applied
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Evaluation and visualization of refrigerant two-phase flow in distributor
This study aims at understanding flow distribution exiting thermostatic expansion valve and through distributor. It is well known that when two-phase flow goes through separation devices such as distributors and headers, mal-distribution is unavoidable due to different properties of liquid and …
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Left Ventricle Assist Device
… the cardiac cycle and capturing pressure and flow meter readings. The research focused on developing and testing a mock circulatory loop that accurately captures pressure and flow meter readings. The team experimented with various silicone elastomers and a urethane-based material, ClearFlex …
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Thermal Conductivity of foamed concrete
… is presented. Experiments were done using a heat flow meter according to ASTM C 518-02. The experimental results show that thermal conductivity decreases with increasing foam content, water-cement ratio and increasing polymer content. Numerical analysis using FLUENT software shows that thermal …
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Bayesian models for screening and diagnosis of pulmonary disease
… stethoscope, an augmented reality peak flow meter, and an electronic questionnaire. Previously, logistic regression has been used for modeling pulmonary disease.
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Design and validation of mobile kit and machine learning algorithms for pulmonary disease screening and diagnosis
… stethoscope, an augmented reality peak flow meter, and an electronic questionnaire. Using this kit, we collected data from patients who visited the Chest Research Foundation, a pulmonary clinic in Pune, India. Using the data collected from these patients, we pursued several of avenues of …
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Refrigerant charge reduction in small commercial refrigeration systems
… of them, as well as pressure transducers, a mass flow meter, and thermocouples. Charge optimization and charge distribution experiments were conducted. The condenser is found to be the component that retains the most charge. The system was modeled using Engineering Equation Solver (EES) for …
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Design and Characterization of a High pressure Flow Loop for Heat Transfer Experiments of Supercritical Carbon Dioxide
… crucial phenomenon, a state-of-the-art closed flow loop was developed. This setup enabled convective heat transfer experiments of sCO2 under diverse boundary conditions and test section geometries. Key components of the loop include the test section, constant temperature bath, pump, flow meter, …
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Modeling and Applications of Thermoelectric Generators
… harvested power to different inputs and TEG parameters is detailed. In the second part of the dissertation, we integrate a thermoelectric generator with an organic storage device. The performance of the integrated system for different values of load resistances and temperature gradients is …
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Modeling the Arterial System to Improve Ultrasound Measurements of Hemodynamic Parameters
One of the most crucial parameters for monitoring Cardiovascular disease (CVD) risk is one’s Arterial Blood Pressure (ABP). Clinicians use a radial arterial catheter to measure ABP in an intensive care unit (ICU). Although this method is considered the gold standard, its invasive nature makes it …
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An Unsteady State Tracer Dilution Method for Characterizing Water Contributing Fractures in Crystalline Bedrock Wells
… of methods including downhole geophysics, flow meters, and straddle packers. These methods are expensive, time consuming, and can be logistically difficult to implement. This study demonstrates an unsteady state tracer method as a cost effective alternative for gathering fracture …
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Characterization and Modeling of the Thermal Properties of Photopolymers for Material Jetting Processes
… TangoBlackPlus, and Grey60) by using the heat flow meter method. The resulting thermal conductivities are then applied in finite element analysis (FEA) simulations to model the thermal distribution of heated PolyJet parts. Two FEA models of one-dimensional conduction in PolyJet parts are …
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Cavitation and Bubble Formation in Water Distribution Systems
… visual observation of bubbles, an inline turbidimeter, an ultrasonic flow meter, and an inline total dissolved gas probe were used to track the phenomenon. All four measurements confirmed that gaseous cavitation was occurring within the experimental distribution system, even at pressures up to 40 …
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Modeling and Experimental Investigation of Parabolic Trough Solar Collector
… a storage tank, a heat exchanger (radiator), and flow meter. Thermocouples were used to measure the inlet and outlet temperature of PTSC (the second trough). Water is used as a working fluid. After data were recorded, thermal performance analysis was performed. The results indicate that a maximum …
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