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Showing 1 to 20 of 33 for “"pumping system"”.
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Modeling of industrial pumping system dynamics
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Downhole Gas Separator Performance in Sucker Rod Pumping System
Volumetric efficiency of a sucker rod pump has been a major concern for artificial lift designers for a long time. One way to reduce the amount of gas entering into the pump is to use downhole gas separators. The main purpose of these devices is to facilitate agglomeration of gas bubbles so that …
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Simulation of a power station's condensate pumping system in view of improving its efficiency
… requirements, a need was identified to develop a systematic approach that would assist in determining the feasibility of a variable speed drive (VSD) retrofit. In order to develop this approach, a case study was conducted on an Eskom coal-fired power station – comparing different flow-control …
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Development of an efficient off-grid pumping system and evaporation reduction strategies to increase access to irrigation for smallholder farmers in India
… fuel-powered surface pumps, which can have system efficiencies as low as 5%. As fuel prices continue to rise, impoverished smallholder farmers cannot afford the operation costs of their systems and, as a result, irrigate less land. This research aimed to develop a more efficient off-grid …
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A new blood pump and oxygenator system for support of infants with neonatal respiratory distress: preliminary in vitro and in vivo evaluation
A clinical need exists for a blood oxygenator and pumping system for the support of neonates with respiratory deficiencies. Such systems now available for support of adults are not suitable for neonatal patients. In vitro evaluation of a new blood oxygenator and blood pumping system was performed. …
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Evaluation and analysis of wear in progressive cavity pumps
… are used in the transportion of slurries. The pumping element consists of a single helical rotor, which intermeshes with a double helical resilient stator, to create the moving cavities that transport the slurry. Both components suffer from weaL at different rates, due to relative sliding …
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Chemical beam, gas-source molecular beam, and molecular beam epitaxial growth of III/V compound semiconductor materials
A new and unique high vacuum crystal growth system has been developed. The gas source molecular beam/chemical beam epitaxial growth system features a 7000 l/s diffusion pumping system mounted directly beneath a molecular beam epitaxial growth chamber. After careful thermal cleaning of the new …
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High-power diode-pumped ytterbium-doped fibre-laser
… were the study of an efficient compact-launching system, and the operation of the double cladding compact fibre as a continuous-wave laser and a Q-switched laser. During this work, highly efficient side launching systems were developed. These allowed coupling of more than 70% of the pump light …
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Development of a high throughput 3D perfused liver tissue bioreactor
… this microenvironment, the reactor needs a pumping system, reservoirs and a controller. Previously, these have all been stand-alone components. This work focuses on the development of a new, integrated culture system. This system integrates 12 reactor microenvironments, reservoirs and …
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Preliminary design of a liquid bipropellant microfabricated rocket engine
… micro-scale operation. These include a 300 atm pumping system, a 3000 K and 125 atm combustion chamber and a Mach 3.5 thrusting nozzle. Studies indicate that a turbopump system is feasible while further investigations on bearings are required to fully validate the concept. The viability of the …
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Design of a heat transfer subsystem using a real time expert system
… and develop an interactive and real time expert system for the automation of the design of a heat transfer subsystems; Each set (representing the design configuration) is evaluated in terms of performance criteria (e.g., pressure drop across each component, capital costs, and operating costs of …
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Study, modeling and analysis of heat pumping solutions in a commercial building
… – Energy Conservation in Buildings and Community Systems) Annex48: “Heat Pumping and Reversible Air Conditioning”. The aim of this work is to study the possibility of integration of a reversible heat pumping system into the existing HVAC system of a “commercial” building (which includes …
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Design considerations for variable power split hydraulic drives for industrial applications
… which may produce undesirable effects in the system. Currently, the types of CVTs utilized in industry are hydrostatic drives and hydrodynamic couplings. However, these drives are heavy, presenting an obstacle in applications where weight is a concern. In a power split continuously variable …
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The integration of pumped hydro storage systems into PV microgrids in rural areas
Photovoltaic (PV) systems are popular in rural areas because they provide low cost and clean electricity for homes and irrigation systems. The primary challenge of PV systems is their intermittent nature. The typical solution is storing energy in batteries; however, they are expensive and possess a …
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Aufbau und Erprobung eines in-situ NO/NOy-Mess-Systems am Höhenforschungsflugzeug M55-Geophysica
The fully automated in-situ measuring system SIOUX (StratospherIc Observation Unit for nitrogen oXides) has been developed and established under flight conditions. SIOUX is a two channel measuring device designed for the high-altitude research aircraft M55-Geophysica to record reactive nitrogen …
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Development of solution-phase extreme ultraviolet spectroscopy and photophysics of μ-oxo-bridged Fe(III)porphyrins
… sheet in situ is described and the high-pressure pumping system for generating the liquid sheet is detailed. The instrument for M-edge absorption spectroscopy is adapted to handle the gas load for the vacuum chambers. The first transmission spectrum of XUV in the energy of 40-90 eV is collected …
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Micro free-flow isoelectric focusing
To unravel the complexity of cellular systems, protein prefractionation tools can be used to reduce cell lysate complexity and increase assay sensitivity. Rapid free flow isoelectric focusing (FF-IEF) is achieved in a microfluidic device by isolating the electrodes from the focusing region with …
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High-frequency sensor data capture short-term variability in Fe and Mn cycling due to hypolimnetic oxygenation and seasonal dynamics in a drinking water reservoir
… Fe and Mn to degrade water quality and impact ecosystem functioning, coupled with increasing evidence for high spatiotemporal variability in other biogeochemical cycles, necessitates a closer evaluation of the short-term Fe and Mn cycling dynamics in lakes and reservoirs. We adapted a UV-visible …
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IN-SITU ADDITIVE MANUFACTURING OF METALS FOR EMBEDDING PARTS COMPATIBLE WITH LIQUID METALS TO ENHANCE THERMAL PERFORMANCE OF AVIONICS FOR SPACECRAFT
… requiring more reliable thermal management systems to enhance the thermal performance of the avionics. The emergence of advanced additive manufacturing (AM), such as selective laser melting (SLM) and engineering materials, such as low-melting eutectic liquid metal (LM) alloys and synthetics …
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