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This article from Practical Boat Owner provides a step-by-step guide on how to check and replace the water pump impeller in a boat's engine. The impeller is responsible for pumping seawater to cool the engine, and it is important to regularly inspect and change it to prevent any issues during bad weather or while out at sea. The article explains the different types of water pump systems and provides detailed instructions on how to remove and inspect the impeller. It also offers tips on reassembling the pump and suggests suppliers for replacement parts. [Extracted from the article]

Purpose: There are three purposes in this paper: to verify the importance of bi-directional fluid-structure interaction algorithm for centrifugal impeller designs; to study the relationship between the flow inside the impeller and the vibration of the blade; study the influence of material properties on flow field and vibration of centrifugal blades. Design/methodology/approach: First, a bi-directional fluid-structure coupling finite element numerical model of the supersonic semi-open centrifugal impeller is established based on the Workbench platform. Then, the calculation results of impeller polytropic efficiency and stage total pressure ratio are compared with the experimental results from the available literature. Finally, the flow field and vibrational characteristics of 17-4PH (PHB), aluminum alloy (AAL) and carbon fiber-reinforced plastic (CFP) blades are compared under different operating conditions. Findings: The results show that the flow fields performance and blade vibration influence each other. The flow fields performance and vibration resistance of CFP blades are higher than those of 17-4PH (PHB) and aluminum alloy (AAL) blades. At the design speed, compared with the PHB blades and AAL blades, the CFP blades deformation is reduced by 34.5% and 9%, the stress is reduced by 69.6% and 20% and the impeller pressure ratio is increased by 0.8% and 0.14%, respectively. Originality/value: The importance of fluid-structure interaction to the aerodynamic and structural design of centrifugal impeller is revealed, and the superiority over composite materials in the application of centrifugal impeller is verified. [ABSTRACT FROM AUTHOR]

The article offers information on preparing an outboard engine for winter storage and recommissioning in the spring to maximize its longevity and performance. It emphasizes the importance of correct and regular maintenance to avoid costly repairs and discusses common issues such as fuel system problems, cooling system neglect, and steering cable maintenance.

Copyright of China Pulp & Paper Industry is the property of China Pulp & Paper Industry Publishing House and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A recent preprint abstract discusses the development of a user-friendly device and pump system that allows for the co-culture of multiple tissue samples, including a lymph node, on a 3D-printed chip. This chip has the potential to mimic communication between organ systems and reveal mechanisms of health and disease. The researchers anticipate that this flexible platform will enable models of multi-organ immune responses throughout the body. However, it is important to note that this preprint has not yet undergone peer review. [Extracted from the article]

BOLT-together torque converters are the new hotness, but what's so special about them, and why would you want to put one in your car? There are two main reasons to go for a bolt-together converter over a welded one: you can change the stall speed without returning the converter, and you can clean the converter out if there is a transmission failure. PHOTO (COLOR): AllFast Torque Converters supplies these bolt-together kits to other converter shops all over Australia. [Extracted from the article]

A patent has been issued for a blood pump impeller by HeartWare Inc. The impeller is composed of a metal alloy that can change from a solid to a liquid state at temperatures above normal body temperature. The impeller includes a plurality of blades, some of which are made of a flexible material that contains the metal alloy. The patent also mentions the use of a heating element or cooling element to control the temperature of the metal alloy. This technology has potential applications in implantable blood pumps used to assist the pumping action of a failing heart. [Extracted from the article]

A patent has been issued to HeartWare Inc. for a blood pump with an impeller rinse operation. The patent describes a method and system for increasing the washing of impeller surfaces in an implantable blood pump. The technique involves applying different voltage waveforms to two stators to rotate the impeller, with the second waveform being asymmetric to the first waveform. The patent aims to reduce the risk of thrombus formation near the impeller. [Extracted from the article]

A study conducted at Federal University Sao Carlos in Brazil examined the effect of different impeller types on the cellular morphology and production of clavulanic acid by Streptomyces clavuligerus in a stirred-tank bioreactor. The researchers found that the impeller type influenced the flow pattern, power consumption, and energy dissipation, resulting in differences in the hydrodynamic environment that affected the morphology of the microorganism. The study concluded that choosing the most suitable impeller configuration in conventional bioreactors is important for manufacturing bioproducts. This research was supported by various organizations, including Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ), and Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP). [Extracted from the article]

MedArray Inc. has been issued a patent for an impeller-driven hollow fiber membrane separator. The invention pertains to membrane separator modules that use hollow fibers to facilitate mass transfer and separations across the membrane. These modules have various applications, including dialysis, filtration processes, and controlling dissolved gases in bioreactor tanks. The patent describes a specific design for the membrane separator module that incorporates an impeller to drive fluid flow, eliminating the need for external components like pumps and blowers. The patent was filed by Jean Patrick Montoya and assigned to MedArray Inc. [Extracted from the article]

A patent has been issued for an impeller with reduced mass inertia for a respiration therapy appliance. The invention relates to a respiration therapy appliance that uses a fan to generate a respiratory air flow. The fan impeller has a hub, a support disk, and a plurality of blade elements. The invention aims to reduce noise and allow for smooth and quick adjustments to the speed of rotation. The patent provides detailed descriptions and claims for the fan impeller and its use in a respiratory therapy appliance. [Extracted from the article]

A patent application has been filed for impellers used in cutting machines, specifically for slicing food products. The impeller is designed with radially oriented paddles that direct the products towards the cutting knives of the machine. The patent application also describes improvements to the impeller, such as equipping the paddles with multiple posts to prevent damage from rocks and debris. The impeller and cutting machine aim to improve the slicing process and minimize damage from foreign debris. [Extracted from the article]

The article presents answer to questions concerning improving fuel filter efficiency, and changing a pump impeller.

A personal narrative is presented which explores the author's experiences with pumps and circulators.

Purpose: The purpose of the study is to developed the effect of Nusselt number on impeller diameter in agitated vessel, which is beneficial to find out the heat transfer coefficient in the process industry. A comparison has been done between the experimental and calculated Nusselt numbers with standard deviation found to be 8.03 per cent. Design/methodology/approach: For studying the effect of impeller diameter on Nusselt Number, the heat transfer measurements were made with three different impellers of diameter. Although the diameter of impeller, Da shows its effect in Reynolds number, an attempt has been made to find the relationship between the impeller diameter and Nusselt number. A correlation between (NNuj/N″Pra1/3 N″Rea2/3) vs Da/DT and (NNuoc/N″Pra1/3 N″Rea2/3) vs Da/Dc in which data of three fluids [1, 2 and 4 per cent carboxy methyl cellulose solution of A type (CMC-A) solutions] have been plotted. Findings: The heat transfer data for agitated Newtonian and non-Newtonian fluids have been successfully correlated by using the viscosity of the fluid evaluated at the impeller tip assuming a cylinder of diameter equal to that of impeller rotating in an infinite fluid. Data of 1, 2 and 4 per cent CMC-A, for three impeller diameters, have been correlated by equations. Using the above concepts of Reynolds and Prandtl numbers, Nusselt Numbers and Da/DT, it is also possible to correlate the available published data for other non-Newtonian fluids obtained with different impeller geometries. Originality/value: A set up was made for studying the effect of impeller diameter, the heat transfer measurements were made with three impellers of diameter 7.5, 12.7 and 18.35 cm respectively. Although the diameter of impeller, Da shows its effect is Reynolds number, an attempt has been made to find the effect of Da/DT ratio on Nusselt number. [ABSTRACT FROM AUTHOR]

A patent has been issued for impellers used in cutting machines, specifically centrifugal-type slicing machines for food products. The impellers are designed to reduce the likelihood of damage to knives and knife holders from foreign debris, such as rocks, that may be present in the material being cut. The impellers have exit slots that allow debris to exit the impeller, and paddles that direct material in a radially outward direction. The patent is assigned to Frito-Lay North America Inc. and was filed on July 8, 2021. [Extracted from the article]

A study conducted by researchers at East China University of Science and Technology in Shanghai, China, explored the impact of impeller design on the cultivation of mesenchymal stem cells (MSCs) on microcarriers in spinner flasks. The researchers used computational fluid dynamic simulations to investigate the effect of an impeller structure on flow field structure, aggregate formation, and cellular physiological activity. By designing a modified impeller, the researchers were able to reduce aggregate size, promote cell proliferation and stemness maintenance, and preserve the expression of stemness markers. The findings of this study have implications for the design of reactors and the optimization of operating parameters during MSC expansion. [Extracted from the article]

Abiomed Inc. has filed a patent application for an intravascular blood pump that includes an intake filter. The purpose of the pump is to temporarily relieve the heart's workload and assist in recovery. The filter is designed to prevent heart tissue from being drawn into the pump, which could be harmful or increase the risk of blood clots. The pump housing, impeller, and filter are all flexible and can expand or compress, and the filter has strategically sized openings to prevent the ingestion of heart tissue. The patent application also describes an apparatus that includes a left-ventricular assist device with an impeller, frame, and pump-outlet tube with varying porosity to accommodate different blood flow dynamics. [Extracted from the article]

BiVACOR Inc. has been issued a patent for a heart pump with impeller rotational speed control. The patent describes a heart pump that includes a housing, an impeller, a drive, a magnetic bearing, and a controller. The impeller rotates within the housing and includes vanes that move fluid from an inlet to an outlet. The magnetic bearing controls the axial position of the impeller, and the controller monitors changes in a bearing indicator and adjusts the rotational speed of the impeller accordingly. The heart pump is designed to provide left and right ventricular function and can vary the blood flow rate to induce pulsatile flow. [Extracted from the article]

The method according to claim 13, wherein: the second longitudinal portion of the impeller is disposed in a proximal direction with respect to the first longitudinal portion of the impeller; and the at least one magnet of the second rotor is partially axially offset in the proximal direction with respect to the at least one magnet of the impeller. Keywords: Aortic Valve; Business; Cardiology; Health and Medicine; Heart Valves; Kardion GmbH EN Aortic Valve Business Cardiology Health and Medicine Heart Valves Kardion GmbH 1248 1248 1 10/03/23 20231003 NES 231003 2023 OCT 2 (NewsRx) -- By a News Reporter-Staff News Editor at Cardiovascular Week -- Kardion GmbH (Stuttgart, Germany) has been issued patent number 11754075, according to news reporting originating out of Alexandria, Virginia, by NewsRx editors. The cardiac support system according to claim 1, wherein: the second longitudinal portion of the impeller is disposed in a proximal direction with respect to the first longitudinal portion of the impeller; and the at least one magnet of the second rotor is partially axially offset in the proximal direction with respect to the at least one magnet of the impeller. [Extracted from the article]

The article reports that the engineering firm Renishaw Plc has supplied the RMP600 machine tool probing system and the Productivity+ PC-based inspection software to Honeywell Aerospace, a subdivision of consumer engineering firm Honeywell International Inc., to help maintain accuracy in the manufacturing of impellers and blisks for commercial aeroplanes. It presents views of Honeywell engineer Luis Adrian Gallegos on the investments done by the company on Renishaw.

The article offers information on several renderings by various digital artists and the tools used by them for it. Topics discussed include the Motorola Mobility Red Phone rendered by Helder Filipov, head of technology company Motorola Mobility's Brand Experience Design (BXD); a State-of-the-Art Packaging system rendered by BluePrint Automation (BPA); and the model of an impeller by Magnus Skogsfjord using a computer-aided design (CAD) system.

The turbulent flow field generated in a baffled stirred tank by a Rushton turbine impeller is numerically performed by solving the unsteady Reynolds-averaged Navier–Stokes equations. The numerical results are compared with measurements in terms of time-averaged velocity distribution and turbulence characteristics at different locations in the axial and radial directions. The scale adaptive simulations (SAS) turbulence model is used to provide detailed flow information and resolve the large turbulence structures. The three-dimensional nature of the trailing edge vortices generated in the wake region near the impeller trailing edges were well predicted. Evaluation of Reynolds stresses shows the high anisotropy of the turbulence inside the vessel. The unsteadiness and pulsating behaviors within the vessel are clearly captured in the time/space domains in the axial and circumferential directions. The spectral analysis of pressure fluctuation shows the blade passing frequency as the main source of unsteadiness in the turbulent flow within the vessel. [ABSTRACT FROM AUTHOR]

Copyright of KI - Kälte Luft Klimatechnik is the property of Hüthig GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article evaluates the AGS Series grinder pump from Goulds.

The pump-outlet tube typically at least one blood inlet opening that is configured to be disposed within the left ventricle and at least one blood outlet opening that is configured to be disposed within the subject's aorta. The apparatus according to claim 1, wherein the pump-outlet tube defines a widened region in the vicinity of the impeller, which is wider than a portion of the pump-outlet tube proximal thereto, and wherein pump-outlet tube is configured to redirect the radial blood flow components axially, by the pump-outlet tube narrowing within the portion of the pump-outlet tube that is proximal to the widened portion. Typically, the pump-outlet tube is configured to redirect the radial blood flow components axially, by the pump-outlet tube narrowing within the portion of the pump-outlet tube that is proximal to the widened portion. Typically, the volute spirals and curves through 90 degrees and then leads into a pump-outlet tube, which is disposed such that blood-outlet openings defined by a proximal portion of the pump-outlet tube, are disposed in the subject's aorta. [Extracted from the article]

Reduced interfacial area in turn, adversely affects oxygen (i.e., air) transfer rate to the plurality of cells present in the cell-culture media, thereby affecting the cell growth and performance of the bioreactor system. In operation, air or a gas/gas mixture comprising oxygen is introduced in a cell culture vessel to promote cell growth of a plurality of cells present in a cell-culture media. Typically, a bioreactor system is configured to receive and grow a plurality of cells, referred to as "starter cells", in a cell-culture media present in a culture vessel of the bioreactor system. [Extracted from the article]

1 illustrates a membrane separator module 100 in communication with a bioreactor tank 102 that contains a fluid media 104, wherein the membrane separator module 100 is operable to control dissolved gases in the fluid media 104. The membrane separator module of claim 1, wherein the impeller includes a shaft and a rotor magnet connected to the shaft, and the membrane separator module further comprises: a magnetic stator provided proximate the first manifold or the second manifold, wherein the magnetic stator surrounds the rotor magnet. The fluid media inlet 110 of the membrane separator module 100 is in communication with a first end of the hollow fibers and the fluid media outlet 112 is in communication with a second end of the hollow fibers contained within the membrane separator module 100, such that fluid introduced at the fluid media inlet 110 flows through the hollow fibers and exits the membrane separator module 100 at the fluid media outlet 112. [Extracted from the article]

The catheter pump further includes an impeller system including an impeller body, the impeller system movable relative to the expandable cannula along a longitudinal axis of the catheter pump. The method includes placing the catheter pump in a separated configuration, in which an impeller body of the impeller system is axially spaced from the expandable cannula along a longitudinal axis of the catheter pump, maneuvering the expandable cannula and impeller system to the target site while the catheter pump is in the separated configuration, and transitioning the catheter pump from the separated configuration to an operational configuration at the target site, wherein, in the operational configuration, the impeller body is located at the same axial position as the expandable cannula." The catheter pump is selectively transitionable between a separated configuration in which the impeller body is axially spaced from the expandable cannula along the longitudinal axis, and an operational configuration in which the impeller body is positioned within the impeller blade zone of the expandable cannula. [Extracted from the article]

The method includes placing the catheter pump in a separated configuration, in which an impeller body of the impeller system is axially spaced from the expandable cannula along a longitudinal axis of the catheter pump, maneuvering the expandable cannula and impeller system to the target site while the catheter pump is in the separated configuration, and transitioning the catheter pump from the separated configuration to an operational configuration at the target site, wherein, in the operational configuration, the impeller body is located at the same axial position as the expandable cannula." The catheter pump is selectively transitionable between a separated configuration in which the impeller body is axially spaced from the expandable cannula along the longitudinal axis, and an operational configuration in which the impeller body is positioned within the impeller blade zone of the expandable cannula. The catheter pump further includes an impeller system including an impeller body, the impeller system movable relative to the expandable cannula along a longitudinal axis of the catheter pump. [Extracted from the article]

The guard of claim 2, wherein the first brace member inner side wall includes a first brace member extension forming a part of the vertical slot for receiving a portion of an inner edge of the first blade, and the second brace member inner side wall includes a second brace member extension forming a part of the vertical slot for receiving a portion of an inner edge of the second blade. An impeller system, comprising the impeller assembly of claim 6, wherein the impeller has a central opening, the impeller assembly further comprising a pin and a seat fitment. The guard of claim 1, wherein the first brace member inner side wall includes a first brace member extension forming a part of the vertical slot for receiving a portion of an inner edge of the first blade, and the second brace member inner side wall includes a second brace member extension forming a part of the vertical slot for receiving a portion of an inner edge of the second blade. [Extracted from the article]

The focus of this study was to propose a novel hemolysis model which can more accurately predict the hemolysis value when designing the axial flow blood pump. Keywords: Blood Cells; Cell Research; Health and Medicine; Hemolysis EN Blood Cells Cell Research Health and Medicine Hemolysis 407 407 1 04/24/23 20230427 NES 230427 2023 APR 30 (NewsRx) -- By a News Reporter-Staff News Editor at Medical Devices & Surgical Technology Week -- A new study on hemolysis is now available. [Extracted from the article]

The blood pump of claim 1, wherein the at least one impeller blade has a width near the distal end of the skirt that is greater than a width of the at least one impeller blade near the proximal end of the skirt. Blood Pumps, Boston Scientific Scimed Inc., Business, Health and Medicine, Healthcare Technology Companies, Medical Device Companies, Medical Devices The blood pump of claim 1, wherein the impeller assembly is configured to rotate within the impeller assembly housing. [Extracted from the article]

Widely used machines for this purpose arecommercially available from Urschel Laboratories, Inc.,and include machines under the name Model CC(R). The impeller according to claim 1, wherein the atleast first exit slot has a major dimension oriented in aradial direction of the impeller. Products aredelivered to the cutting head 12 and impeller 14 througha feed hopper 11 located above the impeller 14. 3 is an isolated view of a particular butnon-limiting example of an impeller 14 that has been usedwith Model CC(R) slicing machines, including the machine10 schematically represented in FIG. [Extracted from the article]

No. 10,668,195 (the '195 patent) discloses apercutaneous catheter blood pump that combines elements of anexpandable catheter blood pump-namely an expandable impellerhousing-with those of a non-expandable blood pump, such as afixed-diameter impeller. "Since catheter blood pumps are advanced to the heart throughthe vascular system, there is a limit as to the acceptable diameterof the largest feature of the catheter blood pump. Inaccordance with the present teachings, an impeller for use with acatheter blood pump, such as the blood pump of the '195 patent,has impeller blades that are partially deformable. [Extracted from the article]

The article offers information on the understanding of pump curve for selecting heating pump. Topics discussed include increasing impeller diameter with increased speed for accurate efficiency of the pump , water horsepower (WHP) requirement and relationship with heat capacity; and presents diagrams and curves related to the same.

The article discusses the bolting installation of the Procharger D-1 self-contained (SC) Supercharger system on the blower of the 1999 Mustang GT project car. Topics discussed include its impeller and engine rating, the removal of the front bumper cap to ease the installment of charge cooler, and the use of muffler stand.

The article presents a study that aims at suitable material selection and requirements for amine service. Topics discussed include sulfide stress corrosion (SSC) due to diffusion of hydrogen in carbon steel (CS), corrosion or cracking caused by the dissolved acid gases that are a byproduct of amine degradation, incursion of acid or inorganic salts in amine units resulting in solvent degradation, and use of high silicon cast iron impellers for high-pressure amines.

The article discusses the gas analysis methods and degassing procedures for controlling dissolved hydrogen gas in the molten aluminum casting process. It takes note of the equilibrium gas removal ratio varying with temperature and degassing time using rotary impeller units as well as of correction factors for specific allow compositions. Analysis of liquid samples and the Reduced Pressure Test for solids are discussed along with pointers for ensuring accurate readings.

The article focuses on the steps to improve hydrocracker condenser and increase its capacity. Topics discussed include managing rundown temperature of unconverted oil (UCO) by using sour water stripper (SWS), need to increase kerosene top reflux due to decreased pressure difference of hydraulic circuit and increasing size of impellers for increased discharge flow of pumps.