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Last Updated: 10 November 2022

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Developing a Test Protocol to Determine Packing Performance in a Soot Blower

Abstract Soot deposit accumulation in recovery boilers on heat transfer tubes and surfaces reduces thermal stability, affecting thus the equipment's longevity and life. To maintain fluid pressure, this specialized device has a seal between its tubes to prevent fluid flow to clean the heating pipes and inside the surface. To evaluate the sealing options available, this work recommends a soot blower test protocol. The following seal types are compared in terms of comparative results.

Source link: https://doi.org/10.1115/pvp2022-84869


Feedback Linearization of a Blower in an Anesthesia Workstation

The model must be linearized in order to make them available to the vast field of linear control theory. This paper uses a gray box model of a blower pushed by a brushless direct current motor to produce a controller based on feedback linearization. In simulation and on a demonstrator platform, the controller is then evaluated for reference tracking and disturbance rejection.

Source link: https://doi.org/10.1515/cdbme-2022-1070


PENGARUH SISTEM DOUBLE BLOWER TERHADAP KINERJA PENDINGINAN AC KENDARAAN PENUMPANG

The user's comfort is extremely important when using air conditioning in passenger cars. The left rear passenger seat, the right rear passenger seat, the front passenger seat, and the driver's position are all measured for four measurement points, namely the left rear passenger seat, the right rear passenger seat, the right rear passenger seat, the front passenger seat, and the driver's position. In this report, the double blower system has an effect on passenger vehicle air conditioner cooling.

Source link: https://doi.org/10.36526/v-mac.v7i1.1483


Electrostatic Induction Spray-charging System (Embedded Electrode) for Knapsack Mist-blower

With reduced drift and less spray chemical requirements, the introduction of electrically charged sprays in agricultural applications has been essential for improved control of droplet transference. As an attachment to a knapsack mist-blower, the research was conducted to develop an electrostatic induction spray charging device. At five electrode potentials at four electrode placement positions from the atomization zone, the prototype was tested for charge to mass ratio at five electrode potentials at four electrode position positions from atomization zone. The charge mass ratio value of spray cloud was determined using Faradays Cage at five positions from nozle tip to five positions from nozle tip. Maximum CMR value of 1. 088 mC. kg-1 was found at 5 mm from the atomization zone at 5 kV. The increased charging scheme, which was at 4 kV and 5 kV, exceeded commercial systems in CMR from 100 cm to 250 cm distances, although it was only noticed at 50 cm distance.

Source link: https://doi.org/10.9734/cjast/2020/v39i530549


SIMULATION RESEARCH ON FLOW FIELD DISTRIBUTION IN ARTILLERY TURRET UNDER THE SIMULTANEOUS ACTION OF EXHAUST FAN AND BLOWER

When the blower and the exhaust fan are working at the same time, a computational simulation study based on computational fluid dynamics is carried out, and the flow field distribution results under various fan power working conditions are obtained.

Source link: https://doi.org/10.12783/ballistics22/36090


Blower-door estimates of PM 2.5 deposition rates and penetration factors in an idealized room

The present research investigated indoor and outdoor concentrations of PM 2. 5 and estimated PM 2. 5 deposition rates and penetration factors in a variety of indoor and outdoor conditions, as well as in a new approach. The blower-door method is compared to the traditional decay and rebound techniques for an idealized room under eight test conditions; run three times to determine the coefficient of variation representing precision. Higher-induced indoor/outdoor pressure differences result in a larger variation of estimated effective deposition rates on various indoor surfaces, according to the results.

Source link: https://doi.org/10.1177/1420326x20944427


Design and Characterizing of Blower Wind Tunnel Using CFD

Both numerically and experimentally, a new subsonic blower wind tunnel design has been investigated, and experimentally, it is also referred to as a "blower” wind tunnel. This paper, in the beginning, is first intended to discuss each successive stage of the wind tunnel design process. In the CFD model, every constituent component was measured and then all the losses were added up to determine the power needed for the wind tunnel operation, which is used as a “intake fan” boundary conditions. Using HWA, investigations were also carried out to determine the flow deficit in the wake of a convex hump model.

Source link: https://doi.org/10.20944/preprints202208.0361.v1


Vibration Analysis and Active Control of Rotor Shaft in Magnetically Suspended Air-Blower

An air-blower with active magnetic bearings could increase productivity and reduce energy consumption by avoiding contact between the rotor shaft and the stator shaft. The rotor shaft's unbalance terms were analyzed, and the sophisticated-field cross-feedback system was intended to reduce the vibration amplitude. The amplitude of the rotor shaft with unbalance terms could be increased by the rotating frequency, and the nutation vibrations were reduced by 50% by increasing the complex-field cross-feedback control model's high-frequency nutation coefficient.

Source link: https://doi.org/10.3390/machines10070570


Analytical model of a particular type of positive displacement blower

Many papers that refer to the twin-screw compressor exist in the literature. This usually has two separate rotors, a male and a female, and is most often used to produce compressed gas for industrial use. However, a different model of positive displacement rotary compressor with two screws is occasionally used, one of its common uses being in car engine supercharging. An investigation of the rotors' specific slipping of the rotors is provided later, revealing which areas of the profile are the most stressed. This model will be useful for future research into rotor pressure loads and blower dynamics.

Source link: https://doi.org/10.1243/0954406991522743


Numerical study of a positive displacement blower

Using computational fluid dynamics, we were able to investigate and visually examine flow in an involute-type three-lobe positive discharge blower's evolutionary characteristics. The exhaust rate showed two V-type fluctuations in the simulation results, whereas the semi-empirical model showed the exhaust rate had only one V-type fluctuation.

Source link: https://doi.org/10.1243/09544062jmes1503

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions