Filter screen assembly

A conventional design of rainwater harvesting system collects and directs the rainwater through water piping from roof of building to the water storage. The filtration system which locates before the water tank storage and first flush bypass system is the main focus of the research. A filtration system consists of a control volume of filter compartment, filter screen (stainless steel mesh) and water piping that direct the water flow. The filtration efficiency of an existing filter “3P Volume Filter VF1” by industrial company is enhanced. A full scale filter design prototype with filter screen of 1000 μm stainless steel metal mesh is tested to compare with the original filter system design. Three types of water inlet setups are tested. Among the proposed water inlet setups, the 90° inlet setup with extension provides the best filtration rate per unit time, following by the 45° inlet setup. The 45° and 90° inlet setup has similar filtration efficiency at low to medium flow rate while 45° inlet setup has better efficiency at high flow rate. The filtration efficiency with the 90° inlet setup with extension is observed to maintain at highest value at medium to high flow rate. The overall filtration performance achieved by the 90° inlet setup with extension at low to high flow rate is between 34.1 to 35.7%.

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The Use of Controlled Dissolution Glass for the Consolidation of a High Porosity Chalk

10.2118/205155-ms ◽

2021 ◽

Author(s):

Max Olsen ◽

Ragni Hatlebakk ◽

Chris Holcroft ◽

Roar Egil Flatebø ◽

Asif Hoq ◽

...

Keyword(s):

Tensile Strength ◽

Colloidal Silica ◽

Strength Increase ◽

High Porosity ◽

Hydrocarbon Recovery ◽

Filter Screen ◽

The Matrix ◽

Core Flood ◽

Fractured Well ◽

Tensile Strength Increase

Abstract This paper reports the development and testing, of a Phosphate controlled dissolution glass composition used to strengthen the matrix of chalk whilst retaining the permeability of the rock, facilitating improved hydrocarbon recovery in unstable wells. Multiple versions of the glass solutions and different types of colloidal silica were extensively tested in the laboratory to determine injectability and reactivity with calcium carbonate rocks. The goal of the testing was to determine the best performing solution for use in a field trial in the Norwegian North Sea. The laboratory testing included filtration and core flood tests to determine the injectability of the solutions and post treatment permeability, and Brazilian strength tests to determine the tensile strength of the treated chalk cores. The filterability was tested through filter screen sizes ranging from 5 to 0.6 µm. Core flood testing was performed on 10 cm long chalk cores with 1.5 mD permeability. The glass solutions showed the best results in the filtration and core flood testing, achieving significantly greater invasion depth than any of the colloidal silica samples. The phosphate glass treated chalk cores maintained 70 to 100% of the original permeability while delivering a 3 to 5 fold tensile strength increase. The lab tests demonstrated the potential of a glass based treatment to strengthen chalk formations without impeding permeability.Based on the promising results from the lab tests, it was decided to trial the selected glass solution in a mature vertical proppant fractured well. The test confirmed that the glass solution could be pumped into the well, but the test failed pre-maturely after two months of varied production, and the trial will not be covered in this paper.However, due to the high value in being able to stabilize chalk in the field, the Operator is evaluating a new trial in a horizontal well, and learnings from the first trial will be used to inform further lab tests in the next phase. The glass solution used in this trial is being further developed to be used in other formation types, such as sand and non-calcium containing reservoirs.

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Development of the juice extraction equipment: physico-mathematical model of the processes

Eastern-European Journal of Enterprise Technologies ◽

10.15587/1729-4061.2021.224986 ◽

2021 ◽

Vol 1 (11 (109)) ◽

pp. 14-24

Author(s):

Yevgeniy Medvedkov ◽

Aigerim Nazymbekova ◽

Dinara Tlevlessova ◽

Mikhail Shaprov ◽

Ainura Kairbayeva

Keyword(s):

Extraction Efficiency ◽

Screw Conveyor ◽

Productivity Analysis ◽

Conveyor System ◽

Component Design ◽

Small Fruit ◽

Filter Screen ◽

Juice Yield ◽

Juice Extraction ◽

Productivity Indicators

Multifruit juicers are designed, constructed and improved to be able to process pineapples, oranges and watermelons efficiently. Little juice manufacturers need both a small and efficient device for juice extraction for being economically concurrent compared to big corporations. The authors of the represented paper aim to present the experimental device for juice extraction, its effectiveness, and functional. This device was created using the compressive and compressive shear forces conveyed by an auger conveyor system as a working power. The juicer consists of a hopper, a screw conveyor shaft, a filter screen, a juice outlet, gearbox housing, and a motor. The analysis of the component design enabled the authors to use the data in order to identify the sizes, manufacture and assemble the machine. The authors have made a lot of tests to detect the efficiency and functionality of the presented device. Tests of the device productivity were carried out using watermelons loaded into the device both peeled and unpeeled. Percentage of juice yield, juice extraction efficiency and extraction losses were used as performance indicators. Productivity analysis results revealed that a fruit type and peel condition reliably influenced productivity indicators at the value of 1 %. The percentage of juice yield from peeled and unpeeled watermelons constituted 89.5 % and 89.7 %, respectively. Extraction efficiency constituted 96.6 % for peeled watermelons and 97.1 % for unpeeled ones. Extraction losses amounted to 2.9 % and 2.6 % correspondingly. The proposed device is easy to use and maintain, therefore, it will perfectly suit the needs of small fruit juice manufacturers and can help to get economic efficiency to the small manufacture

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Investigation of Chemical Effects on Emergency Core Cooling Filtration Head Loss After Loss of Coolant Accident

Volume 2: Structural Integrity; Safety and Security; Advanced Applications of Nuclear Technology; Balance of Plant for Nuclear Applications ◽

10.1115/icone17-75398 ◽

2009 ◽

Author(s):

Jong Woon Park ◽

Byung Gi Park ◽

Chang Hyun Kim

Keyword(s):

Calcium Silicate ◽

Sodium Phosphate ◽

Building Materials ◽

Head Loss ◽

Aluminum Surface ◽

Loss Of Coolant Accident ◽

Filter Screen ◽

Loss Of Coolant ◽

Reactor Building ◽

Core Cooling

Integrated tests of head loss through an emergency core cooling filter screen are conducted, simulating reactor building environmental conditions for thirty days after a loss of coolant accident. A test apparatus with five individual loops each of whose chamber is established to test chemical product formation and measure the head loss through a sample filter. The screen area at each chamber is 78.54cm2 and reactor building materials can be scaled down according to specific plant condition. A series of tests have been performed to investigate the effects of reactor building spray, existence of calcium-silicate with tri-sodium phosphate (TSP), and composition of materials. The results showed that head loss across the chemical bed with even a small amount of calcium-silicate insulation instantaneously increased as soon as TSP was added to the test solution. Also, the head loss across the filter screen is strongly affected by spray duration and the head loss increase is rapid at the early stage, because of high dissolution and precipitation of aluminum and zinc. After passivation of aluminum and zinc by corrosion, the head loss increase is much slowed down and is mainly induced by materials such as calcium, silicon, and magnesium leached from NUKON™ and concrete. Furthermore, it is newly found that the spay buffer agent, tri-sodium phosphate, to form protective coating on the aluminum surface and reduce aluminum leaching is not effective for a large amount of aluminum and a long spray.

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Fabrication of Fine Mesh Filter Screen with Pulsed Laser

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.516.54 ◽

2012 ◽

Vol 516 ◽

pp. 54-59

Author(s):

Keiji Ogawa ◽

Heisaburo Nakagawa ◽

Fumiya Murase ◽

Susumu Nishida

Keyword(s):

Small Diameter ◽

Pulsed Laser ◽

Batch Process ◽

Laser Drilling ◽

Hole Drilling ◽

Drilling Process ◽

Diameter Hole ◽

Fine Mesh ◽

Fine Pitch ◽

Filter Screen

This paper proposes a novel manufacturing process of a fine mesh filter screen with a pulsed laser. The fine mesh filter screen, made of stainless steel, has many small diameter holes with high aspect ratio and fine pitch. In the conventional process, an electron beam drills in a vacuum. However, this is very costly because of the expensive equipment required and batch process. Therefore, a laser drilling process for small diameter hole drilling in air with higher flexibility was proposed. The post-processes after the laser drilling completed the fine mesh filter screen.

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Stress analysis of a filter screen based on dimensional analysis and finite element analysis

Engineering Applications of Computational Fluid Mechanics ◽

10.1080/19942060.2019.1665588 ◽

2019 ◽

Vol 14 (1) ◽

pp. 168-179

Author(s):

Ruili Yu ◽

Rui Liang ◽

Wenhai Zhou ◽

Shujiang Wang ◽

Shouti Yue ◽

...

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Stress Analysis ◽

Dimensional Analysis ◽

Element Analysis ◽

Filter Screen

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Experimental Study on Type and Accuracy Optimization of Sand Control in Sand-Producing Heavy Oil Well

10.2118/208563-ms ◽

2021 ◽

Author(s):

Jianhua Bai ◽

Yugang Zhou ◽

Huaxiao Wu ◽

Shunchao Zhao ◽

Baobing Shang ◽

...

Keyword(s):

Heavy Oil ◽

Retention Rate ◽

Weighted Average ◽

Optimization Method ◽

Oil Wells ◽

Oil Well ◽

Retention Performance ◽

Filter Screen ◽

Sand Control ◽

Production Stages

Abstract This paper proposes a set of methods for selecting the type of sand control screen and optimizing the accuracy in heavy oil Wells, which take into account the requirements of sand control and productivity protection in heavy oil Wells. Sand retaining experiments are carried out with slotted screen, wire wrapped screen and metal filter screen under the condition of oil and water mixed sand carrying flow. In order to optimize the sand control screen suitable for heavy oil well, this paper uses the weighted average method to quantitatively evaluate the flow performance, sand retention performance and oil conductivity of the screen. Then, repeat the experiment by changing the accuracy of the screen to optimize the accuracy. The experimental results show that the permeability of the three kinds of sand control screens is about 2μm2 when only heavy oil plugging occurs. Under the combined plugging action of formation sand and heavy oil, the slotted screen has the highest permeability, and its conductivity to heavy oil is 10% higher than that of the other two screens. The silk-wound screen has the best sand retention performance, with a sand retention rate of more than 90%. Through the quantitative evaluation of the sand control performance of three kinds of screens in different production stages of heavy oil Wells, the slit screen is selected as the optimal screen. For simulated formation sand with a median particle size of 250μm, the optimal sand control accuracy is 200μm. This paper provides a quantitative optimization method of screen type and accuracy for sand control design of sand-producing heavy oil Wells, so as to maximize the productivity under the premise of ensuring sand-producing control of heavy oil Wells.

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