Results 11 to 20 of about 79,746 (259)

Hydrodynamic Characteristic Analysis and NSGA-II Optimization of a Vacuum Fish Pump

open access: yesJournal of Marine Science and Engineering, 2023
The fish pump is an important piece of power equipment for aquaculture, especially for deep-sea engineering vessels and cage culture. Fish pump research focuses on reducing fish body damage, improving survival rates, and increasing fish lifting ...
Yang Hong   +4 more
doaj   +1 more source

Method for calculating pumping characteristic of high-vacuum system with turbomolecular vacuum pump [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2018
The pumping characteristic of a high-vacuum system depends on a number of factors: the pumping characteristics of a high-vacuum turbomolecular pump (TMN), the conductivity of connecting lines, the pumping characteristics of a for vacuum pumping system,
E. V. Svichkar   +2 more
doaj   +1 more source

Numerical Simulation of Transient Characteristics of Start-Up Transition Process of Large Vertical Siphon Axial Flow Pump Station

open access: yesFrontiers in Energy Research, 2021
In order to explore the transient characteristics of the large-scale vertical siphon axial flow pumping station during the start-up and exhaust process, numerical simulations were carried out on the start-up process of the axial flow pumping station ...
Xiaowen Zhang   +6 more
doaj   +1 more source

Effects of stable clearances on backflow in the variable-pitch screw vacuum pump

open access: yesMechanics & Industry, 2021
Effects of various clearances of variable-pitch screw vacuum pump on gas backflow of internal flow field of the pump cavity is studied. The theoretical tooth surfaces of screw rotor are optimized by radial, normal equidistance modifications, and four ...
Zhang Li, Zhang Yongju, Chen Ziyun
doaj   +1 more source

Modelling and Parametric Analysis of a Brine Treatment Unit Using a High-Temperature Heat Pump and a Vacuum Evaporator

open access: yesApplied Sciences, 2022
The brine produced from desalination systems is a highly concentrated mixture, including cleansing chemicals from the water treatment processes that can possibly degrade ecosystems in discharge areas. Evaporation is a widely used method for the treatment
Apostolos Gkountas   +4 more
doaj   +1 more source

AN AUTOMATIC VACUUM PUMP. [PDF]

open access: yesJournal of the American Chemical Society, 1915
n ...
openaire   +1 more source

Study on performance characteristic of medium consistency pump

open access: yesAdvances in Mechanical Engineering, 2017
The aim of this work is to study the operation and performance characteristics of medium consistency pump in different conditions, and a sonar flowmeter and monitoring system are used in the experimental set up.
Daoxing Ye, Hong Li
doaj   +1 more source

Desain Sistem Vakum untuk Mendinginkan Ruang Transformator

open access: yesMetal: Jurnal Sistem Mekanik dan Termal, 2022
An analysis has been carried out on designing a 60 MVA 150 kV transformer cooling chamber vacuum system. The transformer cooling chamber is vacuumed up to a pressure of 0.001 kPa. This is done to avoid the formation of gas bubbles, avoid condensation and
Benny Dwika Leonanda   +3 more
doaj   +1 more source

Characterization of Macroinvertebrate Communities in the Hyporheic Zone of River Ecosystems Reflects the Pump-Sampling Technique Used. [PDF]

open access: yesPLoS ONE, 2016
The hyporheic zone of river ecosystems provides a habitat for a diverse macroinvertebrate community that makes a vital contribution to ecosystem functioning and biodiversity. However, effective methods for sampling this community have proved difficult to
Rachel Stubbington   +4 more
doaj   +1 more source

A Low-cost, Sterile System for Fat Collection Using a Syringe Tube as a Reservoir

open access: yesPlastic and Reconstructive Surgery, Global Open, 2022
Summary:. Fat grafting is a widely performed procedure in the field of plastic surgery. It involves fat extraction, processing, and injection into a recipient site. It is imperative that the fat is collected and processed in a sterile system.
Solaiman M. Alshawaf, BMSc, MD   +4 more
doaj   +1 more source

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