The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Poprac Marti - One of the best experts on this subject based on the ideXlab platform.
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Positive displacement Pump Design
Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015Co-Authors: Poprac MartiAbstract:This bachelor work is about basic types of positive displacement Pumps, focused on their Design, advantages and disadvantages and their applications. In the second part of the work we are focused on the possibilities of reducing noise levels of some types of positive displacement Pumps. The whole work consists of many pictures and diagrams for the better understanding
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Positive displacement Pump Design
Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015Co-Authors: Poprac MartiAbstract:Obsahom bakalárskej práce je pojednanie o základných typoch hydrostatických hydrogenerátorov s ohľadom na ich konštrukciu, výhody a nevýhody a použitie v praxi. V druhej časti práce je dôraz kladený na možnosti znižovania hluku vybraných hydrostatických hydrogenerátorov. Text je doplnený množstvom obrázkov a grafických závislostí pre lepšie pochopenie pojednávaného problému.This bachelor work is about basic types of positive displacement Pumps, focused on their Design, advantages and disadvantages and their applications. In the second part of the work we are focused on the possibilities of reducing noise levels of some types of positive displacement Pumps. The whole work consists of many pictures and diagrams for the better understanding.
Homola Tomáš - One of the best experts on this subject based on the ideXlab platform.
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Positive displacement Pump Design
Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014Co-Authors: Homola TomášAbstract:The bachelor thesis is focused on positive displacement Pump Design. At the beginning of the bachelor thesis is described basic division of hydrostatic Pumps, basic calculation relations and characteristic of liquids. The basic calculation relations are: actual flow, torque, efficiency and power consumption. Furthermore, in the individual Pump types are described principle function, characteristics, uses, advantages and disadvantages. At the end of the thesis is mentioned current research, which conversant analysis of the force Gerotor Pumps, where the cycloidal transfer made from thermoplastic (POM)
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Positive displacement Pump Design
Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014Co-Authors: Homola TomášAbstract:Bakalářská práce je zaměřena na konstrukční provedení hydrostatických čerpadel. Na začátku bakalářské práce je popsáno základní rozdělení hydrostatických čerpadel, základní, výpočtové vztahy a charakteristika použitých kapalin. Mezi základní výpočtové vztahy patří: skutečný průtok, kroutící moment, účinnost a příkon. Dále je u jednotlivých typů čerpadel popsán princip funkce, vlastnosti, využití, výhody a nevýhody. Na konci práce je zmíněn aktuální výzkum, který se zabývá silovou analýzou Gerotorových čerpadel, kde je cykloidní převod vyroben z termoplastu (POM).The bachelor thesis is focused on positive displacement Pump Design. At the beginning of the bachelor thesis is described basic division of hydrostatic Pumps, basic calculation relations and characteristic of liquids. The basic calculation relations are: actual flow, torque, efficiency and power consumption. Furthermore, in the individual Pump types are described principle function, characteristics, uses, advantages and disadvantages. At the end of the thesis is mentioned current research, which conversant analysis of the force Gerotor Pumps, where the cycloidal transfer made from thermoplastic (POM).
David W. Rosen - One of the best experts on this subject based on the ideXlab platform.
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Pump Design for a Portable Renal Replacement System
Journal of Medical Devices-transactions of The Asme, 2011Co-Authors: Jane Kang, Tamera Scholz, Jason D. Weaver, David W. RosenAbstract:This work proposes a small, light, valveless Pump Design for a portable renal replacement system. By analyzing the working principle of the Pump and exploring the Design space using an analytical Pump model, we developed a novel Design for a cam-driven finger Pump. Several cams sequentially compress fingers, which compress flexible tubes; thus eliminating valves. Changing the speed of the motor or size of the tube controls the flow rate. In vitro experiments conducted with whole blood using the Pump measured Creatinine levels over time, and the results verify the Design for the portable renal replacement system. The proposed Pump Design is smaller than 153 cm3 and consumes less than 1 W while providing a flow rate of more than 100 ml/min for both blood and dialysate flows. The smallest Pump of a portable renal replacement system in the literature uses check valves, which considerably increase the overall manufacturing cost and possibility of blood clotting. Compared to that Pump, the proposed Pump Design achieved reduction in size by 52% and savings in energy consumption by 89% with the removal of valves. This simple and reliable Design substantially reduces the size requirements of a portable renal replacement system.
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Pump Design for a Portable Renal Replacement System
Volume 2: Biomedical and Biotechnology Engineering, 2010Co-Authors: Jane Kang, Tamera Scholz, Jason D. Weaver, David W. RosenAbstract:This work proposes a small, light, valve-less Pump Design for a portable renal replacement system. By analyzing the working principle of the Pump and exploring the Design space using an analytical Pump model, we developed a novel Design for a cam-driven finger Pump. Several cams sequentially compress fingers, which compress flexible tubes, thus eliminating valves. Either changing the speed of the motor or size of the tube can control the flow rate. In vitro experiments conducted with whole blood using the Pump measured Creatinine levels over time, and the results verify the Design for the portable renal replacement system. The proposed Pump Design is smaller than 153 cm3 and consumes less than 1W while providing a flow rate of more than 100ml/min for both blood and dialysate flows. The smallest Pump of a portable renal replacement system in the literature uses check valves, which considerably increase the overall manufacturing cost and possibility of blood clotting. Compared to that Pump, the proposed Pump Design achieved reduction in size by 52% and savings in energy consumption by 89% with the removal of valves. This simple and reliable Design substantially reduces the size requirements of a portable renal replacement system.Copyright © 2010 by ASME
Christophe S Lynch - One of the best experts on this subject based on the ideXlab platform.
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piezoelectric hydraulic Pump development
Journal of Intelligent Material Systems and Structures, 2000Co-Authors: Lisa D Mauck, Christophe S LynchAbstract:A piezohydraulic Pump is presented that makes use of the step-and-repeat capability of piezoelectric actuators. This work discusses piezohydraulic Pumping theory, Pump Design, and Pump performance....
M.h. Hablanian - One of the best experts on this subject based on the ideXlab platform.
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Engineering aspects of turbomolecular Pump Design
Vacuum, 2007Co-Authors: M.h. HablanianAbstract:Abstract The development of modern (thin-bladed) turbomolecular high-vacuum Pumps began in 1957 with the demonstration of the possibility of obtaining high compression ratios with axial flow compressors in the molecular flow regime. Thirty years later, such Pumps had become the major method for high vacuum Pumping. It had been apparent from the beginning that pneumatic compressors can be useful at any pressure provided a proper number of suitable impellers were used. However, theoretical studies, initially by Prof. A. Shapiro's group at MIT (Massachusetts Institute of Technology) dealt primarily with the Pumping mechanism in molecular flow rather than with an optimum practical Pump Design. Some observations in such studies were misunderstood and the first Pump Designs were not optimized. Later, compound or hybrid Pumps were introduced, which incorporated molecular drag Pumping stages. In more recent years, Pumps have been made which can exhaust directly to the atmosphere by means of added centrifugal-regenerative impellers. The use of different impeller types provides freedom to the Designer to create Pumps that match any reasonable desired performance. This paper will attempt to explore some of the engineering aspects of Design, especially relationships of volume and mass flows, permissible pressure ratios in various density domains, and their relevance to power consumption.
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New concepts in turbomolecular Pump Design
Journal of Vacuum Science and Technology, 1993Co-Authors: M.h. HablanianAbstract:Modern turboPumps were introduced in 1958 and are now widely used in industrial and laboratory applications. At the present time, three types of turbine‐type Pumps are in existence: axial flow turbomolecular Pumps, turbodrag Pumps, and hybrid Pumps combining the two types on the same axis. Recent emphasis on oil‐free vacuum Pumping systems has revived the interest in Pumps which can tolerate higher discharge pressures. When exit pressures reach 10 mbar (or higher), the well‐established molecular flow analysis cannot be used. It appears that the existing turbomolecular and turbodrag Pumps, which take their basic Design from historical models, are not optimized in regard to their speed and throughput performance. Following a simple concept of bulk velocity variation, which can be used for assessing the density continuum (despite the existence of molecular flow through parts of the Pump) an optimized Pumping speed and compression staging arrangement was developed which demonstrates a practical improvement in compression ratios of as high as 40 times for light gases (helium and hydrogen), without increasing the size and power, compared to a conventional Pump. Turbine‐type Pumps, unlike oil‐vapor jet and high‐vacuum cryoPumps, permit practical engineering solutions for expanding the pressure regime to almost arbitrary high pressure. This makes it possible to use oil‐free backing Pumps at intermediate pressures of 10–100 mbar using relatively small changes in Design.
