Relevant bibliographies by topics / Pump types

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Pump types'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Pump types"

1

Zhou, Weidong, Zhimei Zhao, T. S. Lee, and S. H. Winoto. "Investigation of Flow Through Centrifugal Pump Impellers Using Computational Fluid Dynamics." International Journal of Rotating Machinery 9, no. 1 (2003): 49–61. http://dx.doi.org/10.1155/s1023621x0300006x.

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With the aid of computational fluid dynamics, the complex internal flows in water pump impellers can be well predicted, thus facilitating the design of pumps. This article describes the three-dimensional simulation of internal flow in three different types of centrifugal pumps (one pump has four straight blades and the other two have six twisted blades). A commercial three-dimensional Navier-Stokes code called CFX, with a standardk–εtwo-equation turbulence model was used to simulate the problem under examination. In the calculation, the finite-volume method and an unstructured grid system were used for the solution procedure of the discretized governing equations for this problem.Comparison of computational results for various types of pumps showed good agreement for the twisted-blade pumps. However, for the straight-blade pump, the computational results were somewhat different from widely published experimental results. It was found that the predicted results relating to twisted-blade pumps were better than those relating to the straight-blade pump, which suggests that the efficiency of a twisted-blade pump will be greater than that of a straight-blade pump. The calculation also predicts reasonable results in both the flow pattern and the pressure distribution.
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Gao, J., R. T. Mathias, I. S. Cohen, and G. J. Baldo. "Two functionally different Na/K pumps in cardiac ventricular myocytes." Journal of General Physiology 106, no. 5 (November 1, 1995): 995–1030. http://dx.doi.org/10.1085/jgp.106.5.995.

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The whole-cell patch-clamp technique was used to voltage clamp acutely isolated myocytes at -60 mV and study effects of ionic environment on Na/K pump activity. In quiescent guinea pig myocytes, normal intracellular Na+ is approximately 6 mM, which gives a total pump current of 0.25 +/- 0.09 pA/pF, and an inward background sodium current of 0.75 +/- 0.26 pA/pF. The average capacitance of a cell is 189 +/- 61 pF. Our main conclusion is the total Na/K pump current comprises currents from two different types of pumps, whose functional responses to the extracellular environment are different. Pump current was reversibly blocked with two affinities by extracellular dihydro-ouabain (DHO). We determined dissociation constants of 72 microM for low affinity (type-1) pumps and 0.75 microM for high affinity (type-h) pumps. These dissociation constants did not detectably change with two intracellular Na+ concentrations, one saturating and one near half-saturating, and with two extracellular K+ concentrations of 4.6 and 1.0 mM. Ion effects on type-h pumps were therefore measured using 5 microM DHO and on total pump current using 1 mM DHO. Extracellular K+ half-maximally activated the type-h pumps at 0.4 mM and the type-1 at 3.7 mM. Extracellular H+ blocked the type-1 pumps with half-maximal blockade at a pH of 7.71 whereas the type-h pumps were insensitive to extracellular pH. Both types of pumps responded similarly to changes in intracellular-Na+, with 9.6 mM causing half-maximal activation. Neither changes in intracellular pH between 6.0 and 7.2, nor concentrations of intracellular K+ of 140 mM or below, had any effect on either type of pump. The lack of any effect of intracellular K+ suggests the dissociation constants are in the molar range so this step in the pump cycle is not rate limiting under normal physiological conditions. Changes in intracellular-Na+ did not affect the half-maximal activation by extracellular K+, and vice versa. We found DHO-blockade of Na/K pump current in canine ventricular myocytes also occurred with two affinities, which are very similar to those from guinea pig myocytes or rat ventricular myocytes. In contrast, isolated canine Purkinje myocytes have predominantly the type-h pumps, insofar as DHO-blockade and extracellular K+ activation are much closer to our type-h results than type-1. These observations suggest for mammalian ventricular myocytes: (a) the presence of two types of Na/K pumps may be a general property. (b) Normal physiological variations in extracellular pH and K+ are important determinants of Na/K pump current. (c) Normal physiological variations in the intracellular environment affect Na/K pump current primarily via the Na+ concentration. Lastly, Na/K pump current appears to be specifically tailored for a tissue by expression of a mix of functionally different types of pumps.
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Sembler, William J. "The Design and Operation of Pumps Furnished for Marine Cargo Service: Part I—Centrifugal Cargo Pumps." Marine Technology and SNAME News 25, no. 01 (January 1, 1988): 1–29. http://dx.doi.org/10.5957/mt1.1988.25.1.1.

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To a pump manufacturer, marine cargo service represents one of the most demanding applications for which he can design and furnish equipment. In addition to being subjected to the stresses encountered in a shipboard environment, cargo pumps must often perform over a wide range of operating conditions and handle multiple fluids with different viscosities, vapor pressures, specific gravities, temperatures, and material requirements. In this paper the author reviews characteristics of the different types of pumps used for marine cargo service, with an emphasis on the special features that should be incorporated into their design for this rigorous duty. Different types of automatic self-priming/stripping systems available for use with these cargo pumps are also examined. Pump operation is discussed, including the significant impact that system design has on proper pump performance. (Because this paper is too large for publication in a single issue, Part II, on other types of cargo pumps, will appear in the next issue of MT, April 1988.)
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Yan, Qiufeng, Yongkang Yin, Wanting Sun, and Jun Fu. "Advances in Valveless Piezoelectric Pumps." Applied Sciences 11, no. 15 (July 30, 2021): 7061. http://dx.doi.org/10.3390/app11157061.

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Piezoelectric pump design is regarded as a hot research topic in the microfluidic field, and has been applied in liquid cooling, precision machinery and other relevant domains. The valveless piezoelectric pump becomes an important branch of the piezoelectric pump, because it successfully avoids the problem of “pump-lagging of valve” during the valve piezoelectric pump processing. This paper summarizes the development of valveless piezoelectric pumps, and introduces some different configurations of valveless piezoelectric pumps. The structure and material of all kinds of valveless piezoelectric pumps are elaborated in detail, and also the output performance of the pump is evaluated and analyzed with the variations in flow rate and output pressure as reference. By comparing the flow of different types of valveless piezoelectric pumps, the application of valveless piezoelectric pumps is also illustrated. The development tendency of the valveless piezoelectric pump is prospected from the perspective of structure design and machining methods, which is expected to provide novel ideas and guidance for future research.
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Bierschenk, B. M., J. Pander, M. Mueller, and J. Geist. "Fish injury and mortality at pumping stations: a comparison of conventional and fish-friendly pumps." Marine and Freshwater Research 70, no. 3 (2019): 449. http://dx.doi.org/10.1071/mf18116.

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Pumping of water during floods from hinterland drainage systems into the main river poses a health risk to fishes and comparative studies are crucial to identify the most fish-friendly pump designs and operations. We investigated the effects on fish health of pump passages through four conventional and one ‘fish-friendly’ pump. All pump types caused external fish injuries leading to direct and delayed mortality. Immediate mortality and injury intensity increased with revolutions per minute (rpm) and differed significantly (P<0.05) between pump types. At the ‘fish-friendly’ Pentair pump (Fairbanks Nijhuis, London, UK), higher numbers of injuries resulting from blunt force (e.g. haemorrhage, scale loss and fin tears) were detected than at the conventional pumps, potentially due to the differences in blade design. The Köster pump (Köster, Heide, Germany) at low rpm proved to be similarly fish friendly as the specially developed fish-friendly Pentair pump due to the low number of entrained fishes. As a measure to reduce potential damaging to fishes, the pumps should run on low rpm as often as possible. This lowers the risk of collision with machine parts and hence mortality rate, as well as the suction effects see at high rpm. After long periods in an anergic state, pumps should generally run on low rpm before changing to higher rates.
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Majdan, Radoslav, Zdenko Tkáč, Rudolf Abrahám, Bohuslav Stančík, Milena Kureková, and Radoslav Paulenka. "Effect of Ecological Oils on the Quality of Materials of Hydraulic Pump Components." Advanced Materials Research 801 (September 2013): 1–6. http://dx.doi.org/10.4028/www.scientific.net/amr.801.1.

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This paper presents the effect of three oil types on the quality of hydraulic pumps after testing on a special test bench. The quality of material of hydraulic pump components was evaluated on the basis of its wear. In the special test bench, hydraulic pumps were loaded by cyclic pressure with different oil types. There were tested a mineral oil-based liquid HV and two biodegradable types, i.e. a vegetable oil-based liquid HETG and polyalphaolefin oil-based liquid HEPR. The wear level of hydraulic pumps was evaluated on the basis of flow efficiency and the weight and roughness of internal components. Laboratory scales were used to measure the weight of hydraulic pump components. Results of measured roughness and weights ​​have been graphically compared. We noticed the most significant material wear on bearings and slide plates. The highest loss of weight was observed in the hydraulic pump tested with the ecological oil HETG. The highest loss of flow efficiency (7.3 %) was measured with the same oil type. This paper shows differences in the wear of hydraulic pumps after testing with different types of oils on the basis of selected methods of technical diagnostics.
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Sembler, William J. "The Design and Operation of Pumps Furnished for Marine Cargo Service: Part II." Marine Technology and SNAME News 25, no. 02 (April 1, 1988): 75–104. http://dx.doi.org/10.5957/mt1.1988.25.2.75.

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To a pump manufacturer, marine cargo service represents one of the most demanding applications for which he can design and furnish equipment. In addition to being subjected to the stresses encountered in a shipboard environment, cargo pumps must often perform over a wide range of operating conditions and handle multiple fluids with different viscosities, vapor pressures, specific gravities, temperatures, and material requirements. In this paper the author reviews characteristics of the different types of pumps used for marine cargo service, with an emphasis on the special features that should be incorporated into their design for this rigorous duty. Different types of automatic self-priming/stripping systems available for use with these cargo pumps are also examined. Pump operation is discussed, including the significant impact that system design has on proper pump performance.
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Lee, Jeong Hoon, Jong Myeong Lee, Jeong Min Ha, Dong Sik Gu, and Byeong Keun Choi. "Eigenvalue Analysis of Roots Type Vacuum Pump Using FE-Method." Materials Science Forum 762 (July 2013): 668–72. http://dx.doi.org/10.4028/www.scientific.net/msf.762.668.

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The demand and importance of vacuum pumps are increasing, because the necessity of dry vacuum pump is proven in semiconductor industry. Various types of vacuum pumps have been developed, and in this research a roots type vacuum pump has been analyzed with a variety of mathematical analysis. Analysis of eigenvalue by FEM analysis and Modal Test were performed through the Roots type vacuum pump and using the results of irregular vibration and instability an assessment has been performed.
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Kalenik, Marek. "Investigations of hydraulic operating conditions of air lift pump with three types of air-water mixers." Annals of Warsaw University of Life Sciences, Land Reclamation 47, no. 1 (March 1, 2015): 69–85. http://dx.doi.org/10.1515/sggw-2015-0015.

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Abstract: Investigations of hydraulic operating conditions of air lift pump with three types of air-water mixers. The paper presents the analysis of results of the investigations concerning the influence of various constructive solutions of the air-water mixers on hydraulic operating conditions of the air lift pump. The scope of the investigations encompassed the determination of characteristics of delivery head and delivery rate for three types of air-water mixers applied in the constructed air lift pump. Using the obtained results, the efficiency of the three types of air-water mixers applied in this air lift pump was determined. The analysis was carried out and there was checked whether the improved analytical Stenning-Martin model can be used to design air lift pumps with the air-water mixers of these types. The highest capacity in the water transport was reached by the air lift pump with the 1st type air-water mixer, the lowest one – with the 3rd type air-water mixer. The water flow in the air lift pump increases along with the rise in the air flow. The lower are the hydraulic losses generated during flow of the air flux by the air-water mixer, the higher is the air lift pump capacity. Along with the rise in the water delivery head, the capacity of the air lift pump decreases. The highest efficiency is reached by the air lift pump with the 1st type air-water mixer, the lowest – with the 3st type air-water mixer. The efficiency of the air lift pump for the three investigated types of air-water mixers decreases along with the rise in air flow rate and water delivery head. The values of submergence ratio (h/L) of the delivery pipe, calculated with the use of the improved analytical Stenning-Martin model, coincide quite well with the values of h/L determined from the measurements.
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Liu, Yu-Wei, and Chen-Kang Huang. "Effects of the Circulation Pump Type and Ultraviolet Sterilization on Nutrient Solutions and Plant Growth in Plant Factories." HortTechnology 29, no. 2 (April 2019): 189–98. http://dx.doi.org/10.21273/horttech04244-18.

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Hydroponic systems in plant factories can be categorized into recirculating or noncirculating systems. In this study, the effects of various commercially available circulation pumps, including a centrifugal magnetic drive pump, a regenerative self-priming pump, and a submersible pump, were experimentally explored. In addition, the effects of an ultraviolet sterilization system on the ion concentrations in nutrient solutions were examined. The concentrations of sodium, potassium, magnesium, calcium, nitrate, sulfate, and ferric (Fe3+) ions in the nutrient solution were measured. For all three types of pumps, the results indicated that there was no significant effect on the concentrations of ions in the nutrient solution. However, the concentration of Fe3+ ions decreased significantly after the nutrient solution was treated by a ultraviolet sterilization system for 48 hours. In addition, the effects of the three types of pumps on the growth of butterhead lettuce (Lactuca sativa) were examined. The temperature records during the pump circulation tests showed that the nutrient solution temperature of the regenerative self-priming pump increased by 15.5 °C (from 20.5 to 36 °C), which caused yellow seedling, scorching on the leaves, and browning of the roots. The ion concentration in the nutrient solutions and total fresh weight of butterhead lettuce did not show any noticeable difference between the centrifugal magnetic drive pump and the submersible pump. In this paper, we clarify the cause of the decreasing iron concentration and provide a guideline for selecting the pump for circulating hydroponic systems in plant factories.
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Dissertations / Theses on the topic "Pump types"

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Svensson, Matilda. "Investigation and Evaluation of Pump Types for a Liquid Metal Jet X-Ray Source." Thesis, KTH, Maskinkonstruktion (Avd.), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-274342.

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Since Wilhelm C. Röntgen discovered the x-rays in 1895 little has been done to improve the x-ray technology. In 2003 a group of scientists at KTH Royal Institute of Technology suggested a new type of x-ray source, namely a liquid metal jet x-ray source. The solid anode in the original source was changed to a liquid metal jet anode. This concept was commercialized by Excillum AB as the MetalJet in 2007. It is important that the x-ray beam is stable to obtain clear x-ray pictures demanding that the metal jet is non-fluctuating. The nozzle and the pump are the two parts in the system affects the metal jet the most. Today a diaphragm pump is used which give rise to a pulsating flow in the liquid. This report will investigate what different pump types exist and what pump types are suitable to pump a liquid metal for this application. A smaller investigation will take place to see if there is an off-the-shelf pump which can be put in the system directly. From the weighted evaluation of pump types it was found that all but one type of electromagnetic pumps, thermoelectric pumps and canned motor pumps are the most suitable pump types to be used in this application. From the smaller investigation into off-the-shelf pump it was concluded that some customization of the considered pump is necessary before the pump can be integrated into the system directly. Mostly, the customization regards material choice.
Lite har gjorts för att utveckla röntgenkällor sedan Wilhelm C. Röntgen upptäckte röntgenstrålning 1895. År 2003 föreslog en grupp med forskare på KTH en ny typ av röntgenkälla, nämligen en flytande metall röntgenkälla. Den solida anoden som vanligen används i röntgenkällor är utbytt mot en jetstråle av flytande metall istället. Detta koncept kommersialiserades av Excillum AB 2007. För att kunna ta tydliga röntgenbilder är det nödvändigt att röntgenstrålen är stabil vilket betyder att jetstrålen inte kan fluktuera. Två delar i systemet påverkar jetten mer än andra och de är munstycket och pumpen. I dagsläget används en membranpump som ger upphov till ett pulserade flöde i metallen. Den här rapporten undersöker vad det finns för olika pumptyper och vilka pumptyper som är mest lämpade för en denna applikation. En mindre undersökning kommer också göras för att undersöka om det finns en pump som kan plockas direkt från hyllan och integreras i systemet. Utifrån en viktad utvärdering av de funna pumptyperna kunde slutsatsen att alla utom en typ av elektromagnetiska pumpar, termoelektriska pumpar och ”canned motor” pumpar är mest lämpade för den här applikationen. Från den mindre undersökning stod det klart att det inte fanns en pump som kunde plockas från hyllan för att integreras i systemet direkt. Mestadels var det materialvalet som var den begränsande faktorn och måste ändras.
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Wang, Wei. "An investigation into high temperature superconducting flux pump technology with the circular type magnetic flux pump devices and YBaCuO films." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/245420.

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The rapid development of second generation (2G) high temperature superconducting (HTS) wires in the last decade has made it possible to wind high quality 2G HTS coils. These 2G HTS coils show promise for future applications such as magnetic resonance imaging (MRI) magnets, electrical machines, magnetic levitation trains, energy storage, etc. 2G HTS coils can be operated using either dc current or ac current. Several important issues have yet to be resolved, such as how to properly magnetise an HTS coil under dc conditions, or how to minimise losses under ac conditions. These problems should be carefully studied before the 2G HTS coils can be widely applied in scientific and industrial applications. This thesis focuses on emerging HTS flux pump technology for HTS coils operating in a dc environment. HTS flux pump technology applies a travelling magnetic wave to fully magnetise an HTS coil, which is both efficient and economical, and has in recent years been proven feasible. However, the underlying physics of this technology are so far poorly understood. In order to study the influence of a travelling magnetic wave on HTS films such as YBa2Cu3O7-δ, two types of circular-type magnetic flux pump (CTMFP) devices were proposed and built. These novel devices generate an annular-shape travelling magnetic wave. The first type was the original CTMFP magnet, which produces the longest wavelength of travelling wave. The second type was the updated CTMFP magnet, which can produce a shorter wavelength of travelling wave (1/2 of the original CTMFP magnet in the six phase connection and 1/4 in the three phase connection). A 2 inch diameter round shape YBCO thin film (200 nm thick of the YBCO layer) and a 46 mm× 46 mm square shape YBCO tape (1.0 µm thick of the YBCO layer, with a hole of Φ26 mm in the centre) were tested. When using a round shape YBCO thin film and the original CTMFP magnet, it was found that the travelling wave tends to decrease the existing critical magnetic gradient inside the YBCO film. The experiment was repeated under different conditions, such as zero-field cooling (ZFC), field cooling (FC), delta-shape trapped field, etc. A simulation based on the H-formulation using FEM software revealed that, after application of the travelling wave, the current density distribution inside the round shape YBCO sample was disturbed, becoming much lower than its critical current density JC. This discovery is interesting because the Bean model suggests that the current density inside a type-II superconductor should be equal to either +JC or - JC (the critical state model). It was found that a round shape YBCO sample follows the Bean model prediction for the homogeneous oscillating field (homogeneous in space), which suggests that the travelling wave is more efficient for transporting the magnetic flux inside YBCO film, compared to a homogeneous oscillating field. An updated CTMFP magnet was designed and built to investigate the influence of the degree of field inhomogeneity on the change of an existing critical magnetic gradient. The results were compared between the six phase connection (1/2 wavelength of the original CTMFP magnet) and the three phase connection (1/4 wavelength of the original CTMFP magnet). It was found that with a travelling wave of consistent amplitude, by shortening the wavelength, the change of magnetic gradient is made stronger. The result supports the assumption that the field inhomogeneity in space may have an important influence on the magnetisation of a YBCO sample. Additionally, in the case of a three phase connection (1/4 wavelength), by reversing the direction of the travelling wave, a different magnetisation profile was obtained, which suggests that the experiment may have detected a macroscopic “magnetic coupling” phenomenon. However, this result needs further study before it can be confirmed. The square shape YBCO sample was tested by applying a travelling wave in a dc background field under FC conditions. The square shape YBCO sample has a centre hole (Φ26 mm), which is closest to the condition of an HTS coil (single layer instead of multi-layer). However, in the experiment there was no clear change of magnetic flux inside the superconducting loop after application of the travelling wave. This might be attributed to the fact that, the field inhomogeneity is not strong enough to cause flux migration in the experiments, and the YBCO layer is relatively thicker which increases the difficulties. Moreover, the width of the superconducting region is relatively small (10 mm), in order to help magnetic flux migrate into the superconducting loop, the field inhomogeneity must be strong enough in the superconducting region, which increases the technical difficulties. However, this might be able to be accomplished by increase the amplitude of the travelling waves. Some experiments will be carried out in the future. The experimental findings in this thesis can not only aid in understanding the mechanism of HTS flux pump technology for an HTS coil, but also can help in understanding ac loss from a coil exposed to a travelling wave. As was suggested by the experimental results, the magnetisation of the YBCO film due to the travelling wave is very different from the magnetisation induced by a homogeneous oscillating field. Under operational conditions, such as inside an HTS motor, the HTS coils experience a travelling wave rather than a homogeneous oscillating field. This thesis discusses the difference in resultant ac loss from a travelling wave and a homogeneous oscillating field of the same amplitude. It was found that, for the round shape YBCO sample, the ac loss from a travelling wave is about 1/3 of the loss from a homogeneous oscillating field. The regions in which the ac loss occurred are also different between a travelling wave and a homogeneous oscillating field. These results suggest that the travelling wave cannot be equated to a homogeneous oscillating field when calculating ac loss. In conclusion, this thesis studies two novel experimental devices, built to study the magnetisation of YBCO films under the influence of a travelling wave. Several novel electromagnetic behaviours were observed in the YBCO films under the influence of a travelling wave, which may help improve understanding of HTS flux pump technology for an HTS coil, and the ac loss induced by a travelling wave.
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Mizuhara, Hisao. "Evaluation of a Compressive-Type Skeletal Muscle Pump for Cardiac Assistance." Kyoto University, 2000. http://hdl.handle.net/2433/180894.

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Kaupert, Kevin A. "Unsteady flow fields in a high specific speed centrifugal pump /." Zürich, 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12068.

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Nyanue, William Grear. "A manual-pneumatic pump for rural water supply." Thesis, The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_128_sip1_w.pdf&type=application/pdf.

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Foster, M. "The potential of a Tesla type device as a non pulsatile blood pump." Thesis, Middlesex University, 2006. http://eprints.mdx.ac.uk/13512/.

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A review of the published work on pumps designed to assist a failing biological heart has been made and discusses the different types of pump presently on the market with the characteristics of each. The materials used to make these pumps are also discussed, together with some of the methods of output control. The application to the patient is described together with the advantages and disadvantages. A Tesla type pump appeared to offer an alternative solution to those problems listed above. This is not a new design but appeared to offer advantages if applied to the application of pumping blood from outside the body. One of these was that at a constant speed, the pump supplied constant fluid pressure irrespective of the delivery. It also appears that the pump can give fluid shear stress levels that are less than the amount that will seriously damage blood components. A prototype pump has been built and tested. The pump achieved the performance target delivery of 10 I/min at a differential pressure of 200 mm Hg. This was considered to be greater than the average performance produced by existing blood pumps but the maximum performance that could be produced by the human heart under extreme conditions. The pump reached a maximum speed of about 4000 rev/min with a maximum power consumption of about 120 Watts. The results indicate that this type of pump is a potential blood pump in terms of the delivery and pressures achieved. The characteristic performance figures are within the envelope of published theoretical results. The pump tested here needs further development to improve the hydraulic performance. Recommendations are made for the direction of future work to improve the pump efficiency and flow patterns, biocompatibility and methods of production. Controls and power supply also need improvement.
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Faulds, Eileen. "Self-Management Among Pre-teen and Adolescent Insulin Pump Users (SPIN)." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587390858875183.

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Damnjanović, Bojana [Verfasser]. "Mechanistic analysis of the pump cycle of the P-type ATPase KdpFABC / Bojana Damnjanović." Konstanz : Bibliothek der Universität Konstanz, 2014. http://d-nb.info/1079280251/34.

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Mehta, Viral. "Torque ripple attenuation for an axial piston swash plate type hydrostatic pump noise considerations /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4380.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2006.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February 28, 2007). Vita. Includes bibliographical references.
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Moniakis, John. "Molecular cloning, regulation and function of a P-type calcium pump in Dictyostelium discoideum." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ27308.pdf.

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Books on the topic "Pump types"

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Sherstnev, Nikolay. Maintenance and repair of marine pumps. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1085864.

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The tutorial shows the design features of marine pumps that affect their working conditions and methods of maintenance and repair. Recommendations for external inspection and control of their components and parts are given. The features of disassembly and assembly of various types of pumps are shown. With examples from ship practice, typical defects of pump assemblies and parts, methods of their determination and elimination are considered. It is intended for students of higher educational institutions (specialty in the specialty "Operation of marine power plants") and university teachers. It can also be used in the system of secondary vocational education in the specialty "Operation of marine power plants".
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Jacobs, U. Heat pumps with absorber-type heat exchangers =: Wärmepumpen mit Absorberwärmetauschern. Luxembourg: Commission of the European Communities, 1985.

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Kazi, Shahjahan M. The effects of pulp type on the mechanical properties of paper. Ottawa: National Library of Canada, 1992.

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Cui, Yu. The effects of wood species and pulp type on paper recycling. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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Yi, Chʻun-u. Yongnyang kabyŏnhyŏng chiyŏrwŏn tajung konggan naengnanbang sisŭtʻem =: The development of capacity variable type geo-thermal source multi space cooling & heating system. [Seoul]: Chisik Kyŏngjebu, 2008.

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Yi, Chʻun-u. Yongnyang kabyŏnhyŏng chiyŏrwŏn tajung konggan naengnanbang sisŭtʻem =: The development of capacity variable type geo-thermal source multi space cooling & heating system. [Seoul]: Chisik Kyŏngjebu, 2008.

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Yi, Chʻun-u. Yongnyang kabyŏnhyŏng chiyŏrwŏn tajung konggan naengnanbang sisŭtʻem =: The development of capacity variable type geo-thermal source multi space cooling & heating system. [Seoul]: Chisik Kyŏngjebu, 2008.

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Yousefian, Sevana. Identification of types of compounds responsible for COD, TOC, and colour in bleached kraft pulp mill effluencts. Ottawa: National Library of Canada, 2000.

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Jørgensen, Kirsten S. Fosforin ja typen mikrobiologiset transformaatiot metsäteollisuuden jätevesien mikrobiologisessa puhdistuksessa. Helsinki: SYTYKE-ohjelma, 1992.

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Grey, Zane. Roping lions in Grand Canyon. South Yarmouth, Ma: J. Curley, 1987.

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Book chapters on the topic "Pump types"

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Gülich, Johann Friedrich. "Pump types and performance data." In Centrifugal Pumps, 39–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12824-0_2.

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Gülich, Johann Friedrich. "Pump Types and Performance Data." In Centrifugal Pumps, 45–80. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14788-4_2.

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Gülich, Johann Friedrich. "Pump Types and Performance Data." In Centrifugal Pumps, 43–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-40114-5_2.

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Yamane, Takashi. "How Do We Select Pump Types?" In Mechanism of Artificial Heart, 13–21. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55831-6_3.

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Franck, P. Å., E. Wallin, and T. Berntsson. "Process Integration of Various types of Heat Pump." In Applications and Efficiency of Heat Pump Systems, 19–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-30179-1_2.

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OuYang, Dan, Wenxin Cai, Lei He, and Yaojun Li. "Two Types of Variable Displacement Oil Pump Development." In Lecture Notes in Electrical Engineering, 1357–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33750-5_44.

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Bonfanti, Riccardo, Andrea Rigamonti, Giulio Frontino, Roseila Battaglino, Valeria Favalli, Clara Bonura, Franco Meschi, and Graziano Barera. "Advanced Pump Functions: Bolus Calculator, Bolus Types, and Temporary Basal Rates." In Research into Childhood-Onset Diabetes, 173–81. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40242-0_15.

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Gatto, Craig, and Mark A. Milanick. "Does Eosin Treat all P-type ATPases Equally?" In The Sodium Pump, 609–12. Heidelberg: Steinkopff, 1994. http://dx.doi.org/10.1007/978-3-642-72511-1_108.

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Green, N. M. "Conservation Patterns Define Interactions Between Transmembrane Helices of P-type Ion Pumps." In The Sodium Pump, 110–19. Heidelberg: Steinkopff, 1994. http://dx.doi.org/10.1007/978-3-642-72511-1_21.

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Grassi, Walter. "Types of Compression Heat Pumps and Their Main Components." In Heat Pumps, 15–71. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62199-9_2.

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Conference papers on the topic "Pump types"

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Shi, Hai-xia, Yu-jie He, Jian-bo Wu, and Qiang Li. "Numeric Analysis on Internal Flow of High-Speed Pump of Different Structural Style." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30405.

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In order to study the effect of the structural style of high-speed pump on internal flow, 4 types high-speed pump of different structural style are selected for comprehensive analysis, S-A turbulence model and SIMPLIEC algorithm are adopted for numerical simulation of internal flow. By comprehensively comparing the static pressure, total pressure, sectional velocity vector and flow path line, two types of high-speed pumps with cylindrical-blade impeller matching nozzle type pump casing have relatively ideal pressure field and flow condition, can reduce hydraulic loss. The comprehensive performance of 4 types of high-speed pump is predicted through computational simulation, the high-speed pump with open cylindrical-blade impeller matching nozzle type pump casing has most excellent performance, indicating the structural style of high-speed pump has effect on its internal flow and performance.
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Dubey, Swapnil. "Study of Different Types of Water Heating Systems - Under Living Lab Conditions." In ASME 2019 13th International Conference on Energy Sustainability collocated with the ASME 2019 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/es2019-3944.

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Abstract In Singapore, roughly 20% of the energy consumed by households is used for water heating and almost all the energy consumed by conventional electric water heaters. One of the significant potential energy saving opportunities lies in using energy-efficient water heating appliances. Recently, there has been a move towards energy-saving design and the use of natural refrigerants over fluorocarbons. Unlike conventional electric storage water heaters, which use electricity to heat water directly, heat pump storage water heaters use electricity only to operate a pump that circulates refrigerants around the system. This refrigerant collects heat from the surrounding atmosphere and transfers it to the water. CO2 heat pumps have low global warming potential when compared to other refrigerants based heat pumps, has zero ozone depletion potential, inexpensive, non-flammable, generate high temperature. In this project, a comparative analysis of three different water heater types has been presented based on real-time usage and living-lab conditions under the tropical climate of Singapore. These three types are: 1. Electrical heater storage type 2. Hybrid heat pump with auxiliary electrical heating water heater 3. CO2 heat pump water heater without auxiliary heating Study found significant energy saving using CO2 heat pump compared to other water heating system and also better for environment.
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Kim, Jin Young, Kyung Nam Chung, and Yong Kyun Kim. "A Numerical Study of Pump Characteristics of a Concrete Volute Pump With Various Types of Volutes." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-06053.

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The concrete volute pump with a specific speed of 460 has been designed. The performance characteristics and radial thrust has been investigated for three types of volute casings by using CFD. The first one is a conventional volute casing, the second one is the volute with diffuser and the third one is a double volute, respectively. Here the volutes have been designed by the constant velocity method. The effects of the diffuser and the double volute on the radial thrust have been compared by using the transient calculation. The analysis results show that radial force of the volute with a diffuser decreases at off-design conditions compared to the other volutes.
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Tilcher, David Konstantin, Michael Pöhler, and Paul Uwe Thamsen. "Ball Passage and Impeller Types Do Not Characterize the Functional Performance of a Sewage Pump." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20208.

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Abstract During the development of sewage pumps their functionality and efficiency have been continuously improved. Different impeller types have been developed; types to reduce clogging, types for associated maintenance during the various stages of the wastewater transport system, and types to increase the efficiency of the pumps. In the current market, energy requirements and efficiency play an increasingly important role. The design of pump impellers with the aim of improving efficiency may increase the susceptibility of clogging. So far there is no test describing both the energy efficiency and the wastewater pumping functionality. Operators can only describe in tenders, a desired efficiency and the indication of plausible experience with respect to the impeller geometry: the impeller shape and the ball passage. It is generally assumed that the susceptibility of clogging can be derived from the impeller shape and the ball passage (or freely passable space). Under this assumption, the vortex impeller should have the lowest susceptibility to clogging. With single and dual-channel impellers, accordingly, the largest possible ball passage points to a low susceptibility of clogging. Both, the hydraulically disadvantageous form of the vortex impeller and an enlargement of the ball passages beyond the hydraulic requirements leads to a significant reduction of efficiency. Generally, it is inferred from these circumstances that clog-free pumps are associated with low efficiency. This assumption, which is also found in the literature, requires a uniform test procedure for the objective assessment of the clogging behavior of sewage pumps. Such a test did not exist. At the Chair of fluid system dynamics, TU Berlin a test stand was developed to examine such assumptions to investigate the functionality and the clogging behavior of sewage pumps. More than 30 different wastewater pumps were tested in this procedure. The results may suggest a correlation between the susceptibility to clogging and the shape of the impeller or ball passage of various sewage pumps. Based on investigations already carried out at the Chair of fluid system dynamics, TU Berlin, the following conclusions are drawn from the measurements: • the superordinate impeller form (Vortex, Channel, etc.) gives no evidence about the susceptibility to blockages, • the ball passage does not indicate the susceptibility to blockages. From these observations it can be deduced: • a sewage pump with an appropriate efficiency may have a low susceptibility to clogging. It can therefore be concluded that the ball passage and the type of impeller are not appropriate parameters to characterize the functional performance of a sewage pump.
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Okada, Yohji, Toru Masuzawa, Toshiyuki Kita, Ken-ichi Matsuda, Tetsuo Ohishi, Yoshiyuki Taenaka, Takashi Yamane, and Chen Chen. "Design of Centrifugal Type Artificial Blood Pump Using Combined Motor-Bearing." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/movic-8414.

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Abstract Application of non-contact, rotary pump for use in artificial heart is highly efficient and prevent thrombosis formation. This paper introduces two types of test design; one is using radial type combined motor-bearing with centrifugal pump. The water pumping test is carried out to confirm the performance. The other one is using axial type combined motor-bearing. The axial type motor controls only one degree-of-freedom in z direction. To control two tilt directions a hybrid (HB) type tilt magnetic bearings are attached on the other surface. Hence it has three active control degrees. Experimental results of the proposed rotary pumps show high potential for its application in artificial heart.
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Ye, Xiao-yan, Sun-sheng Yang, Jing-ning Hu, Xia-ping Xiao, and Guang-feng Zhou. "Research on Improving Efficiency of High Pressure Pump in Seawater Reverse Osmosis Desalination." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78158.

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According to the energy consumption status and characteristics of high pressure pump in Seawater Reverse Osmosis desalination unit of 2500m3/d and 5000 m3/d capacity, reasonable types of high pressure pump were chosen. Research on improving the efficiency of the two types of high pressure pump was made. Without affecting the pump reliability, structural optimization was made centering a round improving the energy efficiency or making efforts to improve energy efficiency. CFD technology was adopted in the fluid end design of the reciprocating pump and high efficiency hydraulic model chosen of the multistage centrifugal pump. For multistage centrifugal pump, several hydraulic models with good hydraulic characteristics were chosen. Numerical method was used in the performance prediction and modeling. Test results show that the optimized reciprocating pump efficiency reaches 93.36% and the multistage centrifugal pump efficiency reaches 80%. This research provides theoretical guidance for reducing energy consumption of Seawater Reverse Osmosis (SWRO) and improving the efficiency of high pressure pumps.
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Hattori, S., T. Fukuda, R. Kishi, H. Ichijo, Y. Katsurayama, H. Katayama, H. Matsuura, T. Watarai, S. Nagamori, and T. Hiramatsu. "Structure and mechanism of two types of micro-pump using polymer gel." In [1992] Proceedings IEEE Micro Electro Mechanical Systems. IEEE, 1992. http://dx.doi.org/10.1109/memsys.1992.187700.

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Kovačević, Ivana, Ne Rudonja, and Milan Gojak. "Thermodynamic Optimization of Cascade Heat Pump." In 51st International HVAC&R Congress and Exhibition. SMEITS, 2020. http://dx.doi.org/10.24094/kghk.020.51.1.17.

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In today’s modern world, development of industry and technology has led to the increase in energy demand. Hence, more fossil fuels are burnt in order to cover this demand. Due to the multiple disadvantages, as well as the negative impact that burning of fossil fuels has on the environment, heat pumps are gaining more importance when providing energy for heating. This paper is aimed at conducting thermodynamic optimization of cascade heat pump in terms of different working fluid combinations and calculating maximum COP. In order to perform thermodynamic analysis, a software program that uses database of working fluids, was developed. The intermediate temperature within cascade heat exchanger represents a crucial parameter when analyzing and designing cascade heat pumps. Thus, when performing thermodynamic analysis, the intermediate temperature was varied in the range from 0°С to 25°С and the optimal temperature that provides maximum COP was defined. The analysis was performed on an air–to–water heat pump, that could be used for heating different types of buildings in places in Serbia where the outdoor design temperature is –20°С. The cascade heat pump would be used alongside radiator heating system operating at temperatures 70°С/50°С. Due to the high temperature difference between heat source and heat sink, cascade heat pumps have advantages over single stage or multi stage heat pumps. The optimization was performed on an air–to–water cascade heat pump where the evaporation and condensation temperatures were –25°С and 75°С, respectively. Following the conducted optimization, the analysis of the impact that isentropic efficiency of compressor has on COP was examined.
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Kovačević, Ivana, Ne Rudonja, and Milan Gojak. "Thermodynamic Optimization of Cascade Heat Pump." In 51st International HVAC&R Congress and Exhibition. SMEITS, 2020. http://dx.doi.org/10.24094/kghk.020.51.1.17.

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In today’s modern world, development of industry and technology has led to the increase in energy demand. Hence, more fossil fuels are burnt in order to cover this demand. Due to the multiple disadvantages, as well as the negative impact that burning of fossil fuels has on the environment, heat pumps are gaining more importance when providing energy for heating. This paper is aimed at conducting thermodynamic optimization of cascade heat pump in terms of different working fluid combinations and calculating maximum COP. In order to perform thermodynamic analysis, a software program that uses database of working fluids, was developed. The intermediate temperature within cascade heat exchanger represents a crucial parameter when analyzing and designing cascade heat pumps. Thus, when performing thermodynamic analysis, the intermediate temperature was varied in the range from 0°С to 25°С and the optimal temperature that provides maximum COP was defined. The analysis was performed on an air–to–water heat pump, that could be used for heating different types of buildings in places in Serbia where the outdoor design temperature is –20°С. The cascade heat pump would be used alongside radiator heating system operating at temperatures 70°С/50°С. Due to the high temperature difference between heat source and heat sink, cascade heat pumps have advantages over single stage or multi stage heat pumps. The optimization was performed on an air–to–water cascade heat pump where the evaporation and condensation temperatures were –25°С and 75°С, respectively. Following the conducted optimization, the analysis of the impact that isentropic efficiency of compressor has on COP was examined.
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Shukla, S. N., and J. T. Kshirsagar. "Numerical Experiments on a Centrifugal Pump." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31176.

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Advances in Computational Fluid Dynamics have made it possible to visualize some of features of flow through rotating machines, that are if not impossible, difficult to measure experimentally. Now Industry standard CFD codes are commercially available and are being used by leading industries as a design verification tool. Most of the commercial codes are general purpose, keeping in mind vast application needs. Various turbulence models, numerical schemes and grid types are given as an option for the end user. Appropriate choice of grid, numerical scheme, interfaces and turbulence models are the key parameters that influence the results from CFD software. A centrifugal pump was designed and developed using empirical and optimization tools developed in-house. The flow passages were checked for smooth flow pattern using CFD tools. The pump was manufactured and tested for its performance. The tested performance matched well with predictions within 3% at best efficiency point as regards to efficiency and head. This model was taken to carry out numerical experiments using CFD tools. The entire performance including flow-head-efficiency and cavitation performance in terms of NPSHr requirement was available. Numerical experiments were carried out to study impact of different parameters like numerical scheme, turbulence models, type of interface between stationary and rotating parts. The results from these numerical experiments are presented and discussed in the light of actual test results from laboratory testing.
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Reports on the topic "Pump types"

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Nayak, S., M. Mapes, L. Smart, and D. Weiss. Pressure distribution along the AGS vacuum chambers with new types of pump out conduits. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1228844.

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Karasawa, Toshio, Shougo Hashimoto, and Ryouji Ehara. Development of Discharge Pump Type Fuel Injection System for Small Two-Wheel Vehicles. Warrendale, PA: SAE International, October 2005. http://dx.doi.org/10.4271/2005-32-0022.

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Duignan, M. R. Final report: Long Term Test of a Gear-Type Pump for the Am/Cm Project. Office of Scientific and Technical Information (OSTI), April 1998. http://dx.doi.org/10.2172/301992.

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Ishibe, Eiichi, Kenji Torii, and Tsuyoshi Kasai. Development of a 4-Stroke Small-Displacement Scooter with Discharge Pump Type Fuel Injection System. Warrendale, PA: SAE International, October 2005. http://dx.doi.org/10.4271/2005-32-0085.

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Ewalt, J. R. Type B Investigation Report for 241-SY-101 Pump Start and 241-C-106 Pit Cleanout. Office of Scientific and Technical Information (OSTI), September 1993. http://dx.doi.org/10.2172/10139533.

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Dutra, Lauren M., James Nonnemaker, Nathaniel Taylor, Ashley Feld, Brian Bradfield, John Holloway, Edward (Chip) Hill, and Annice Kim. Visual Attention to Tobacco-Related Stimuli in a 3D Virtual Store. RTI Press, May 2020. http://dx.doi.org/10.3768/rtipress.2020.rr.0036.2005.

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We used eye tracking to measure visual attention to tobacco products and pro- and anti-tobacco advertisements (pro-ads and anti-ads) during a shopping task in a three-dimensional virtual convenience store. We used eye-tracking hardware to track the percentage of fixations (number of times the eye was essentially stationary; F) and dwell time (time spent looking at an object; DT) for several categories of objects and ads for 30 adult current cigarette smokers. We used Wald F-tests to compare fixations and dwell time across categories, adjusting comparisons of ads by the number of each type of ad. Overall, unadjusted for the number of each object, participants focused significantly greater attention on snacks and drinks and tobacco products than ads (all P<0.005). Adjusting for the number of each type of ad viewed, participants devoted significantly greater visual attention to pro-ads than anti-ads or ads unrelated to tobacco (P<0.001). Visual attention for anti-ads was significantly greater when the ads were placed on the store’s external walls or hung from the ceiling than when placed on the gas pump or floor (P<0.005). In a cluttered convenience store environment, anti-ads at the point of sale have to compete with many other stimuli. Restrictions on tobacco product displays and advertisements at the point of sale could reduce the stimuli that attract smokers’ attention away from anti-ads.
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Beck, Aaron. RiverOceanPlastic: Land-ocean transfer of plastic debris in the North Atlantic, Cruise No. AL534/2, 05 March – 26 March 2020, Malaga (Spain) – Kiel (Germany). GEOMAR Helmholtz Centre for Ocean Research Kiel, 2020. http://dx.doi.org/10.3289/cr_al534-2.

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Cruise AL534/2 is part of a multi-disciplinary research initiative as part of the JPI Oceans project HOTMIC and sought to investigate the origin, transport and fate of plastic debris from estuaries to the oceanic garbage patches. The main focus of the cruise was on the horizontal transfer of plastic debris from major European rivers into shelf regions and on the processes that mediate this transport. Stations were originally chosen to target the outflows of major European rivers along the western Europe coast between Malaga (Spain) and Kiel (Germany), although some modifications were made in response to inclement weather. In total, 16 stations were sampled along the cruise track. The sampling scheme was similar for most stations, and included: 1) a CTD cast to collect water column salinity and temperature profiles, and discrete samples between surface and seafloor, 2) sediment sampling with Van Veen grab and mini-multi corer (mini-MUC), 3) suspended particle and plankton sampling using a towed Bongo net and vertical WP3 net, and 4) surface neusten sampling using a catamaran trawl. At a subset of stations with deep water, suspended particles were collected using in situ pumps deployed on a cable. During transit between stations, surface water samples were collected from the ship’s underway seawater supply, and during calm weather, floating litter was counted by visual survey teams. The samples and data collected on cruise AL534/2 will be used to determine the: (1) abundance of plastic debris in surface waters, as well as the composition of polymer types, originating in major European estuaries and transported through coastal waters, (2) abundance and composition of microplastics (MP) in the water column at different depths from the sea surface to the seafloor including the sediment, (3) abundance and composition of plastic debris in pelagic and benthic organisms (invertebrates), (4) abundance and identity of biofoulers (bacteria, protozoans and metazoans) on the surface of plastic debris from different water depths, (5) identification of chemical compounds (“additives”) in the plastic debris and in water samples.
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Continuous insulin pumps may help manage poorly controlled type 2 diabetes. National Institute for Health Research, July 2017. http://dx.doi.org/10.3310/signal-000448.

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Insulin pumps not much better than multiple injections for intensive control of type 1 diabetes. National Institute for Health Research, July 2017. http://dx.doi.org/10.3310/signal-000440.

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