Current Search: Ramirez, Juan (x)
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Title
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Advanced Adaptive Torque Control of Hydrokinetic Turbines.
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Creator
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Ramirez, Juan, VanZwieten, James H.
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Abstract/Description
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Diversifying US energy production to include renewables has been a popular topic of discussion in recent years. In-stream hydrokinetic energy, electricity production from moving currents without the use of dams, has potential for significant power production with technically feasible US electricity production estimated at 14 GW from rivers, 50 GW from tides, and 19 GW from ocean currents; which is equivalent to approximately 17% of 2011 US power production. This work focuses on improving the...
Show moreDiversifying US energy production to include renewables has been a popular topic of discussion in recent years. In-stream hydrokinetic energy, electricity production from moving currents without the use of dams, has potential for significant power production with technically feasible US electricity production estimated at 14 GW from rivers, 50 GW from tides, and 19 GW from ocean currents; which is equivalent to approximately 17% of 2011 US power production. This work focuses on improving the power production from in-stream hydrokinetic turbines using adaptive torque control, and quantifies increased energy production by comparisons with standard fixed-gain torque control. This research uses numerical modeling to acquire power production estimates under simulated conditions. With these results we can quantify potential energy gains for three representative in-stream hydrokinetic rotor designs.
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Date Issued
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2014
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PURL
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http://purl.flvc.org/fau/fd/FA0005035
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Subject Headings
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College students --Research --United States.
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Format
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Document (PDF)
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Title
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Cement stabilization of organic soils for controlling secondary compression behavior.
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Creator
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Ramirez, Juan., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
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Abstract/Description
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Western Palm Beach County, FL is characterized by thick deposits organic soils at shallow depths. Because of their high void ratio and compressibility, these soils undergo large primary consolidation followed by extended periods of secondary compression causing excessive premature structural distress. Although soil stabilization has been largely used with remarkable results in soft, expansive and non-organic soils, limited research and practice exist in the implementation with highly organic...
Show moreWestern Palm Beach County, FL is characterized by thick deposits organic soils at shallow depths. Because of their high void ratio and compressibility, these soils undergo large primary consolidation followed by extended periods of secondary compression causing excessive premature structural distress. Although soil stabilization has been largely used with remarkable results in soft, expansive and non-organic soils, limited research and practice exist in the implementation with highly organic soils. The main motivation of this research was to investigate the effects of cement stabilization on the compressibility behavior of organic rich soils, and develop mix design criteria for optimum cement contents necessary to induce the desired engineering behavior. This optimized mix design may provide guidelines for Deep Mixing Methods in organic soils.
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Date Issued
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2009
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PURL
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http://purl.flvc.org/FAU/367760
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Subject Headings
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Soil consolidation, Measurement, Soils, Organic compound content, Soil remediation, Technological innovations, Concrete construction, Structural stability, Design
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Format
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Document (PDF)
