Log in

Relevant bibliographies by topics / Gas filters / Journal articles

To see the other types of publications on this topic, follow the link: Gas filters.

Journal articles on the topic 'Gas filters'

Author: Grafiati

Published: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Gas filters.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Lu, Feng, Yihuan Huang, Jinquan Huang, and Xiaojie Qiu. "Gas turbine performance monitoring based on extended information fusion filter." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 2 (2018): 483–97. http://dx.doi.org/10.1177/0954410018776398.

Full text

Abstract:

Performance monitoring is a critical issue for gas turbine engine for improving the operation safety and reducing the maintenance cost. With regard to this, variants of Kalman-filters-based state estimation have been employed to detect gas turbine performance, but the classical centralized Kalman filters are subject to heavy computational effort and poor fault tolerance. A novel nonlinear fusion filter algorithm using information description with distributed architecture is proposed and applied to gas turbine performance monitoring. This methodology is developed from federated Kalman filter, a

APA, Harvard, Vancouver, ISO, and other styles

2

Reddy, Venkat K., and Nihal C. Rajapakse. "CARBOHYDRATE STATUS OF CUSO4 SPECTRAL FILTER-GROWN CHRYSANTHEMUM PLANTS." HortScience 31, no. 5 (1996): 745d—745. http://dx.doi.org/10.21273/hortsci.31.5.745d.

Full text

Abstract:

The response of `Bright Golden Anne' chrysanthemum plants grown under CuSO4 spectral filters to exogenous GA3 application was evaluated to determine the relationship between gibberellins (GAs) and carbohydrate levels. The CuSO4 filters removed far red (FR) wavelengths of light and increased red: far red (R:FR), blue: far red (B:FR), blue: red (B:R) ratios, and phytochrome photoequilibrium (Ø) values of transmitted light compared to water (control) filter. Plant height, internode length, and leaf and stem dry weights were significantly reduced by light passing through CuSO4 filters in spring an

APA, Harvard, Vancouver, ISO, and other styles

3

Schwarz, Almuth D., Jörg Meyer, and Achim Dittler. "Penetration of Water-Soluble Material through Gas-Cleaning Filters." Membranes 12, no. 8 (2022): 776. http://dx.doi.org/10.3390/membranes12080776.

Full text

Abstract:

To predict the behavior of gas-cleaning filters during real-world operation, it is essential to understand their response to ambient conditions. The temporary presence of water droplets in gas-cleaning filtration systems due to fog, spray rain, or condensation, as examples of irregular events, has an impact on the filters’ operating performance, especially when soluble particles are present. In this work, surface filters were loaded with mixtures of water-soluble salt particles and insoluble glass spheres. These were, subsequently, exposed to water mist and dried by a particle-free gas stream.

APA, Harvard, Vancouver, ISO, and other styles

4

White, L. R., T. L. Tompkins, K. C. Hsieh, and D. D. Johnson. "Ceramic Filters for Hot Gas Cleanup." Journal of Engineering for Gas Turbines and Power 115, no. 3 (1993): 665–69. http://dx.doi.org/10.1115/1.2906757.

Full text

Abstract:

This paper reviews the properties of high-temperature ceramic fibers and relates why strength, thermal shock resistance, chemical inertness, and high-temperature capability are important properties for high-temperature filter media. The use of candle filters, fabric filters, and composite filters will be discussed for removal of particulates from hot gas streams in electrical power generation systems, metal refining, chemical processing, and Diesel engine exhaust applications.

APA, Harvard, Vancouver, ISO, and other styles

5

Tatineni, Anuradha, Sonja L. Maki, and Nihal C. Rajapakse. "Growth Response and Carbohydrate Status of Gibberellin-treated Spectral Filter-grown Chrysanthemum Plants." HortScience 33, no. 3 (1998): 522c—522. http://dx.doi.org/10.21273/hortsci.33.3.522c.

Full text

Abstract:

Interest in the use of non- (or less) chemical methods to reduce the height of ornamental crops has increased tremendously. Manipulation of greenhouse light quality is one alternative for plant growth regulation. We have shown that eliminating far-red light from the greenhouse environment with liquid CuSO4 spectral filters is effective in reducing the height of a wide range of plants though plant carbohydrate status is also altered under CuSO4 filter. In previous studies, application of GA3 reversed both the reduction of plant height and carbohydrate status of CuSO4 spectral filter grown plant

APA, Harvard, Vancouver, ISO, and other styles

6

Talipova, M. V., A. V. Lyang, and N. V. Shcherbak. "Development of filter-sorbing materials for modern gas masks and respirators." FORESTRY BULLETIN 27, no. 1 (2023): 121–33. http://dx.doi.org/10.18698/2542-1468-2023-1-121-133.

Full text

Abstract:

The article focuses on the study of filter-sorbing materials (FSM) for the development of small-sized filters and the formation of a modern filters range for gas masks and respirators. There are various kinds of filters, namely particle filters, consisting of a filter material (FM) with protection from aerosols; gas filters, consisting of coal charge with protection from various concentrations of dangerous gases and vapors and combined filters, including anti-aerosol and gas protection. But in industry, due to the improvement of working conditions at enterprises, personal respiratory protectio

APA, Harvard, Vancouver, ISO, and other styles

7

Judkins, R. R., D. P. Stinton, R. G. Smith, et al. "Development of Ceramic Composite Hot-Gas Filters." Journal of Engineering for Gas Turbines and Power 118, no. 3 (1996): 495–99. http://dx.doi.org/10.1115/1.2816675.

Full text

Abstract:

A novel type of hot-gas filter based on a ceramic fiber-reinforced ceramic matrix was developed and extended to full-size, 60-mm OD by 1.5-m-long, candle filters. A commercially viable process for producing the filters was developed, and the filters are undergoing testing and demonstration throughout the world for applications in pressurized fluidized-bed combustion (PFBC) and integrated gasification combined cycle (IGCC) plants. Development activities at Oak Ridge National Laboratory (ORNL) and at the 3M Company, and testing at the Westinghouse Science and Technology Center (STC) are presente

APA, Harvard, Vancouver, ISO, and other styles

8

Lu, Feng, Yafan Wang, Jinquan Huang, Yihuan Huang, and Xiaojie Qiu. "Fusing unscented Kalman filter for performance monitoring and fault accommodation in gas turbine." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 232, no. 3 (2016): 556–70. http://dx.doi.org/10.1177/0954410016682269.

Full text

Abstract:

The Kalman filter is widely utilized for gas turbine health monitoring due to its simplicity, robustness, and suitability for real-time implementations. The most common Kalman filter for linear systems is linearized Kalman filter, and for nonlinear systems are extended Kalman filter and unscented Kalman filter. These algorithms have proven their capabilities to estimate gas turbine performance variations with a good accuracy, and the studies are done provided that all sensor measurements are available. In this paper, a nonlinear fusion approach with consistent diagnostic mechanism based on uns

APA, Harvard, Vancouver, ISO, and other styles

9

Ganguli, R. "Data Rectification and Detection of Trend Shifts in Jet Engine Path Measurements Using Median Filters and Fuzzy Logic." Journal of Engineering for Gas Turbines and Power 124, no. 4 (2002): 809–16. http://dx.doi.org/10.1115/1.1470482.

Full text

Abstract:

Filtering methods are explored for removing noise from data while preserving sharp edges that many indicate a trend shift in gas turbine measurements. Linear filters are found to be have problems with removing noise while preserving features in the signal. The nonlinear hybrid median filter is found to accurately reproduce the root signal from noisy data. Simulated faulty data and fault-free gas path measurement data are passed through median filters and health residuals for the data set are created. The health residual is a scalar norm of the gas path measurement deltas and is used to partiti

APA, Harvard, Vancouver, ISO, and other styles

10

Li, Hai Xia, and Bing Guang Gao. "Filtration Performance of Particle Removal from Gas with Ceramic Candle Filter." Advanced Materials Research 610-613 (December 2012): 1205–8. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.1205.

Full text

Abstract:

A gas-particle separation system was established to study the filtration performance where twelve ceramic filters were divided into four groups. Filters in the same group will be cleaned by pulse back-flow at once. The pressure distribution and variation during filtration and pulse back-flow washing in four group filter and along filter length was measured. The main pressure drop occurs across the filter porous wall. The pressure at filter cavity decreases from the close end to open end of the candle filter. The gas velocity magnitude inside the filter system during filtration process is gener

APA, Harvard, Vancouver, ISO, and other styles

11

Cui, Fang-Xiao, Yue Zhao, An-Jing Wang, et al. "A Multi-Spectral Thermal Gas Detection Imager Using Uncooled Infrared Camera." Optics 3, no. 4 (2022): 473–82. http://dx.doi.org/10.3390/opt3040040.

Full text

Abstract:

Gas remote detection is useful for early warning of gas leakage and toxic chemicals. Optical gas imaging (OGI) built with an uncooled infrared camera is superior to cooled detectors in terms of cost. Current mainstream OGI technologies fall short in their detection of gases at ambient temperature and their ability to classify multiple gases. A multi-spectral uncooled imager is developed to try to solve these problems, which is constructed from a commercial uncooled thermal camera and wide band filters. To solve filter self-radiation and unevenness, a correction method is devised, with an ambie

APA, Harvard, Vancouver, ISO, and other styles

12

Li, Hai Xia, and Jiang Wei. "Flow Pattern in Ceramic Filter System for Particle Removal." Advanced Materials Research 599 (November 2012): 309–12. http://dx.doi.org/10.4028/www.scientific.net/amr.599.309.

Full text

Abstract:

A gas-particle separation system was established to study the filtration performance where twelve ceramic filters were divided into four groups. Filters in same group will be cleaned by pulse back-flow at one time. The pressure distribution and variation during filtration and pulse back-flow washing in filter cavity and along filter length was measured. The main pressure drop occurs across the filter porous wall. The pressure at filter cavity decreases from the close end to open end of the candle filter. The gas velocity inside the filter system is generally relatively low in the vessel during

APA, Harvard, Vancouver, ISO, and other styles

13

Aizawa, Takafumi, and Yoshito Wakui. "Correlation between the Porosity and Permeability of a Polymer Filter Fabricated via CO2-Assisted Polymer Compression." Membranes 10, no. 12 (2020): 391. http://dx.doi.org/10.3390/membranes10120391.

Full text

Abstract:

A porous filter was fabricated by plasticizing polymer fibers with CO2, followed by pressing and adhering; then, its gas permeability, a basic physical property of filters, was measured using N2. The as-obtained filter was well compressed and expected to approximate a sintered porous material. Therefore, the fabricated filter was analyzed by applying the Darcy law, and the correlation between its gas permeability and porosity was clarified. The gas permeability decreased owing to both pore size and porosity reduction upon increasing the degree of compression, which is a feature of the CO2-assi

APA, Harvard, Vancouver, ISO, and other styles

14

Ghofur, A., H. Isworo, R. Subagyo, et al. "Modelling study of flue gas flow pattern with pressure, amount and shape variation catalytic converter." Archives of Materials Science and Engineering 1, no. 103 (2020): 5–17. http://dx.doi.org/10.5604/01.3001.0014.1769.

Full text

Abstract:

Purpose: The purpose of this study is to analyse the modelling of exhaust gas flow patterns with variations in pressure, number, and shape of filters on the catalytic converter. Design/methodology/approach: The research method used is a simulation using ANSYS, which starts by creating a converter catalytic model with pressure variations: (0.5-1.5 atm), number of filters: (2-5), and the form of filter-cut/filter-not-cut. Findings: The decrease in velocity is caused by non-uniform velocity in the exhaust gas flow that occurs when passing through a bend in the filter-cut that serves as a directio

APA, Harvard, Vancouver, ISO, and other styles

15

Kats, B. M., R. M. Dlubovskiy, and V. N. Shevchenko. "GAS SENSORS INDICATING FILTERS." Sensor Electronics and Microsystem Technologies 3, no. 3 (2014): 89–94. http://dx.doi.org/10.18524/1815-7459.2006.3.112719.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Harmata, Władysław. "Testing filter elements for gas masks." Scientific Journal of the Military University of Land Forces 201, no. 3 (2021): 464–81. http://dx.doi.org/10.5604/01.3001.0015.3399.

Full text

Abstract:

Contemporary threats to the natural environment due to atmospheric aerosols, including biological ones, are presented. The filtration process and practical solutions for the protection of the respiratory system against aerosols are characterized. The paper presents the results of tests on a flat filter card-board and a filter used in military gas filters for gas masks.

APA, Harvard, Vancouver, ISO, and other styles

17

Li, Hai Xia, Zhi Jun Sun, Li Jun Zhao, and Zhan Xu Tie. "Filtration and Pulse Cleaning System for Particle Removal from Gas." Applied Mechanics and Materials 42 (November 2010): 188–91. http://dx.doi.org/10.4028/www.scientific.net/amm.42.188.

Full text

Abstract:

The application of rigid ceramic filter for gas filtration on an industrial scale has shown unstable operation over periods of days. The behavior of the ceramic filtration in further application can be predict by measuring properties of a variety of dust and filtration operation condition. The aim of the experimental investigation is to analysis the pressure distribution inside and outside the ceramic filter along the filter length, and to analyze the pressure drop across the filter along the filter length. Ceramic filter filtration system composes multi-pipe filters for gas clean up is introd

APA, Harvard, Vancouver, ISO, and other styles

18

Gourlay, T., M. Gibbons, J. Fleming, and KM Taylor. "Performance characteristics of a new arterial line filter." Perfusion 2, no. 1 (1987): 19–26. http://dx.doi.org/10.1177/026765918700200104.

Full text

Abstract:

A new 40 micron polyester screen arterial line filter with integral automatic blood gas separator has been designed with the potential for improved removal characteristics for gas microbubbles and massive air. A simple in vitro evaluation has been carried out comparing the new filter (Pall EC+) against a standard widely-used reference arterial line filter (Pall EC 3840). The filters have been compared in terms of their haemodynamic performance, specifically pressure drop at incremental flow rates and haemolysis characteristics measuring generated plasma free haemoglobin. In addition, the relat

APA, Harvard, Vancouver, ISO, and other styles

19

Jung, Seojin, and Jooyoun Kim. "Advanced Design of Fiber-Based Particulate Filters: Materials, Morphology, and Construction of Fibrous Assembly." Polymers 12, no. 8 (2020): 1714. http://dx.doi.org/10.3390/polym12081714.

Full text

Abstract:

With increasing air pollution and sporadic outbreaks of epidemics, there is ramping attention on the filtration devices. The main constituents of airborne pollutants are particulate matters of solid particles, liquid aerosol, bioaerosol/bio-droplets, and gas/vapor. With the growing demand for high-performance filters, novel materials and functionalities are being developed applying advanced technologies. In this paper, recent developments of fiber-based particulate filters are reviewed, with a focus on the important performance parameters and material properties. Trends in technology and resea

APA, Harvard, Vancouver, ISO, and other styles

20

Dong, Rui, Zhiqing Zhang, Yanshuai Ye, Huiqiong Huang, and Chao Cao. "Review of Particle Filters for Internal Combustion Engines." Processes 10, no. 5 (2022): 993. http://dx.doi.org/10.3390/pr10050993.

Full text

Abstract:

Diesel engines have gradually become one of the main forces in the human transportation industry because of their high efficiency, good durability, and stable operation. However, compared with gasoline vehicles, the high emission of diesel vehicles forces manufacturers to introduce new pollutant control technologies. Although the particulate matter emissions of gasoline vehicles are lower than that of diesel vehicles, with the popularity of gasoline vehicles and the continuous rise of power, the impact of these particles on the environment cannot be ignored. Therefore, diesel particulate filte

APA, Harvard, Vancouver, ISO, and other styles

21

Fatkhuniam, Agus, M. Burhan Rubai Wijaya, and Angga Septiyanto. "Perbandingan Penggunaan Filter Udara Standar dan Racing Terhadap Performa dan Emisi Gas Buang Mesin Sepeda Motor Empat Langkah." Jurnal Dinamika Vokasional Teknik Mesin 3, no. 2 (2018): 130–37. http://dx.doi.org/10.21831/dinamika.v3i2.21410.

Full text

Abstract:

This research aims to determine the performance increase of using racing air filters compared to standard air filters on a four-stroke vehicle. Performance being tested are power, torque and exhaust emissions. This is an experimental research conducted on a Honda Supra X 125 PGM-FI motorcycle. Data were analyzed using descriptive statistics and the collection is presented in the form of tables, graphs, and calculated averages. Results show that racing air filter 1 have a power of 7.35 HP (2.3% increase) and racing air filter 2 have a power of 7,3 HP (1.6% increase). The torque tests shows that

APA, Harvard, Vancouver, ISO, and other styles

22

Zinurov, V. E., R. Ja Bikkulov, A. V. Dmitriev, O. S. Dmitrieva, and A. N. Nikolaev. "Determination of the design velocity of the gas flow in coarse and fine filters with varying degrees of contamination in the paint booths." Power engineering: research, equipment, technology 24, no. 5 (2022): 3–12. http://dx.doi.org/10.30724/1998-9903-2022-24-5-3-12.

Full text

Abstract:

OBJECT. Determination of the design velocity of the gas flow in coarse and fine filters with varying degrees of contamination. METHODS. We carried experimental studies out to solve the problem. To exclude errors during the studies caused by marriage or other reasons, 3 samples of each of the coarse and fine filters (clean and used) were used. To determine the design speed, an experimental installation was assembled, presented in the work, which included an air duct, an air injection fan, a nozzle for measuring excess pressure in front of the filter under study, an air vent hole, filter samples

APA, Harvard, Vancouver, ISO, and other styles

23

Yi, Jiangang, Jiayi Duan, Rui Yuan, Wen Bo, and Xiaolong Ruan. "Modeling and Cleaning Performance Optimization of Conical Filter Cartridge of Gas Turbine Intake Filter." Processes 11, no. 9 (2023): 2584. http://dx.doi.org/10.3390/pr11092584.

Full text

Abstract:

Intake quality is crucial to gas turbines’ operation. The cartridge filter in the gas turbine intake system filters the gas and outputs a highly clean gas into the gas turbine, while pulse cleaning technology ensures the continuous and efficient operation of cartridge filters. While the current cylindrical pleated filter cartridge used in pulse cleaning usually suffers from insufficient upper cleaning, the conical pleated filter cartridge can effectively solve this issue by providing a greater upper cleaning area with significant application prospects. Despite the existing potential, research

APA, Harvard, Vancouver, ISO, and other styles

24

Samokhvalov, N. M., and V. V. Vinogradov. "Efficiency of dusted gas cleaning using a slotted filter." Proceedings of Universities. Applied Chemistry and Biotechnology 12, no. 2 (2022): 339–48. http://dx.doi.org/10.21285/2227-2925-2022-12-2-339-348.

Full text

Abstract:

The cleaning of industrial gases from dust is one of the most significant current environmental protection problems. The search for new, more advanced and effective ways to clean dust gases and dust collector designs is based on the diversity of technological conditions for dust formation, the physicochemical properties of gases and trapped particles, and an increase in technical and economic requirements for cleaning processes. When cleaning hot or chemically aggressive gases and capturing abrasive dust, the use of electrostatic precipitators, bag, fibrous and granular filters is often associ

APA, Harvard, Vancouver, ISO, and other styles

25

Ikhwahyudin, Afrizal, Kemas Ridhuan, and Eko Nugroho. "Pengaruh cyclone dan peletakannya terhadap karakteristik gasifikasi dengan menggunakan filter zeolit alam." ARMATUR : Artikel Teknik Mesin & Manufaktur 2, no. 1 (2021): 33–40. http://dx.doi.org/10.24127/armatur.v2i1.741.

Full text

Abstract:

The gas product from the gasification process contains tar content that is not thermally appropriately degraded before it leaves the reactor; for efficiency, the gasification process must go through filtering or separation using filters and cyclones. This process is essential because of the increase in the gas producer's energy density through the syn-gas filtering and purification process or syn-gas combustion. This study aimed to determine the effect of the cyclone and its placement on the combustion characteristics of gasification using natural zeolite filters, the length of time for the pr

APA, Harvard, Vancouver, ISO, and other styles

26

Kang, Yue Yi, Yan Ju Wang, Li Kun Yang, and Yu Tian Wang. "Difference Absorption Optical Fiber Methane Gas Sensor Based on FBG ." Applied Mechanics and Materials 128-129 (October 2011): 580–83. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.580.

Full text

Abstract:

In this paper, based on analysis of the near infrared spectral absorption of methane molecule and considering factors such as compatibility with the transmission characteristics of silica optical fiber and the price, using Fiber Bragg Grating (FBG) filters to replace the the traditional interference filter, a novel kind of all-fiber remote sensor utilizing FBG filters and 1.33μm high power light-emitting diode (LED) was developed for real time measurement of methane gas concentration. FBG has a low insert loss and can be produced easily compared with dielectric interference filters. Theory and

APA, Harvard, Vancouver, ISO, and other styles

27

Li, Hai Xia, and Zhan Xu Tie. "Numerical Simulation of Gas Purification by Filtration with Ceramic Filter." Advanced Materials Research 356-360 (October 2011): 1520–23. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1520.

Full text

Abstract:

The numerical simulation method is used to analyze the process of gas purification with ceramic filters. The gas /solid two-phase flow field in the ceramic filter vessel was simulated using the Eulerian two-fluid model provided by FLUENT code. The variations of the pressure distribution in the filter cavity were analyzed. The distribution of the dust cake density along the under cleaning filter length was studied.

APA, Harvard, Vancouver, ISO, and other styles

28

Chigarev, V., and Yu Logvinov. "Closed ventilation and filtering system for cleaning of welding aerosols at deposition." Problems of tribology 99, no. 1 (2021): 28–32. http://dx.doi.org/10.31891/2079-1372-2021-99-1-28-32.

Full text

Abstract:

In the article the questions of development of construction of the closed ventilation and filtering system (CVFS) are considered on cleaning of air-gas mixture at deposition. The offered system consists of gas in-take, filters, containers for assembling of hard parts, hard constituent of welding aerosol (TSSA), by the gaseous constituent of welding aerosol (GSSA) and corps, special vent system with adjusting of speed and volume of extraction. Conducted research for cleaning of welding aerosols (SA) at deposition of high wear proof alloys of type of sormite with the use of the CVFS. Special CVF

APA, Harvard, Vancouver, ISO, and other styles

29

Wilcox, Melissa, Rainer Kurz, and Klaus Brun. "Technology Review of Modern Gas Turbine Inlet Filtration Systems." International Journal of Rotating Machinery 2012 (2012): 1–15. http://dx.doi.org/10.1155/2012/128134.

Full text

Abstract:

An inlet air filtration system is essential for the successful operation of a gas turbine. The filtration system protects the gas turbine from harmful debris in the ambient air, which can lead to issues such as FOD, erosion, fouling, and corrosion. These issues if not addressed will result in a shorter operational life and reduced performance of the gas turbine. Modern day filtration systems are comprised of multiple filtration stages. Each stage is selected based on the local operating environment and the performance goals for the gas turbine. Selection of these systems can be a challenging t

APA, Harvard, Vancouver, ISO, and other styles

30

Nonaka, Tatsuo, Kikuo Takeda, Reiko Iikawa, Toshikazu Taira, Taketoshi Fujimoto, and Taketoshi Nakahara. "Evaluation of Chemical Filters Using Wafer Exposure Method and Experimental FFU." Journal of the IEST 46, no. 1 (2003): 55–58. http://dx.doi.org/10.17764/jiet.46.1.y2510660g86310j3.

Full text

Abstract:

Airborne molecular contaminants (AMCs) have become a serious problem with recent advances in semiconductor manufacturing technology. The use of chemical filters to remove AMCs in cleanrooms is critical for improving the yield of semiconductor devices. The experimental FFU is designed for the evaluation of chemical filters. Silicon wafers exposed in the downstream air of chemical filters in the experimental FFU were investigated by Wafer Thermal Desorption—Gas Chromatography-Mass Spectrometry (WTD-GC-MS). Organic contaminants caused by outgassing from the chemical filter were detected on the su

APA, Harvard, Vancouver, ISO, and other styles

31

Newby, R. A., T. E. Lippert, M. A. Alvin, G. J. Burck, and Z. N. Sanjana. "Status of Westinghouse Hot Gas Filters for Coal and Biomass Power Systems." Journal of Engineering for Gas Turbines and Power 121, no. 3 (1999): 401–8. http://dx.doi.org/10.1115/1.2818487.

Full text

Abstract:

Several advanced, coal and biomass-based combustion turbine power generation technologies using solid fuels (IGCC, PFBC, Topping-PFBC, HIPPS) are currently under development and demonstration. A key developing technology in these power generation systems is the hot gas filter. These power generation technologies must utilize highly reliable and efficient hot gas filter systems if their full thermal efficiency and cost potential is to be realized. This paper reviews the recent test and design progress made by Westinghouse in the development and demonstration of hot gas ceramic barrier filters t

APA, Harvard, Vancouver, ISO, and other styles

32

Nault, Benjamin A., Pedro Campuzano-Jost, Douglas A. Day, et al. "Interferences with aerosol acidity quantification due to gas-phase ammonia uptake onto acidic sulfate filter samples." Atmospheric Measurement Techniques 13, no. 11 (2020): 6193–213. http://dx.doi.org/10.5194/amt-13-6193-2020.

Full text

Abstract:

Abstract. Measurements of the mass concentration and chemical speciation of aerosols are important to investigate their chemical and physical processing from near emission sources to the most remote regions of the atmosphere. A common method to analyze aerosols is to collect them onto filters and analyze the filters offline; however, biases in some chemical components are possible due to changes in the accumulated particles during the handling of the samples. Any biases would impact the measured chemical composition, which in turn affects our understanding of numerous physicochemical processes

APA, Harvard, Vancouver, ISO, and other styles

33

Özyalcin, Can, Peter Mauermann, Steffen Dirkes, Paul Thiele, Stefan Sterlepper, and Stefan Pischinger. "Investigation of Filtration Phenomena of Air Pollutants on Cathode Air Filters for PEM Fuel Cells." Catalysts 11, no. 11 (2021): 1339. http://dx.doi.org/10.3390/catal11111339.

Full text

Abstract:

Filtration of cathode air is one of the challenges in operating proton-exchange membrane (PEM) fuel cells. The poisoning with air contaminants can lead to rapid performance degradation and initiate an aging process of the fuel cell. Various commercially available cathode filters are being tested in a laboratory gas test bench within the research project X-EMU (03B10502B and 03B10502B2). A literature review of harmful gas contaminants in the air used for the oxygen reduction reaction (ORR) on the cathode side was conducted. Experimental investigations took place at 40 °C with synthetic humid ai

APA, Harvard, Vancouver, ISO, and other styles

34

Zhang, Deman, Lujing Zhang, Juntao Zhao, Bin Li, and Peng Deng. "Study on CO emission during DOC assisted DPF regeneration." Journal of Physics: Conference Series 2551, no. 1 (2023): 012019. http://dx.doi.org/10.1088/1742-6596/2551/1/012019.

Full text

Abstract:

Abstract Diesel particulate filters is the most effective post-treatment device used to reduce diesel exhaust particulate emissions. As the amount of particulate matter captured in the diesel particulate filter continues to increase, the exhaust pressure of the diesel engine gradually increases, thereby affecting the power performance of the diesel engine. Therefore, when the particulate matter capture amount reaches a certain value, the diesel particulate matter filter needs to be regenerated. Regeneration of diesel particulate filters will produce secondary pollution, of which CO is one of t

APA, Harvard, Vancouver, ISO, and other styles

35

Thieringer, Julia R. D., Nicolas Hafen, Jörg Meyer, Mathias J. Krause, and Achim Dittler. "Investigation of the Rearrangement of Reactive–Inert Particulate Structures in a Single Channel of a Wall-Flow Filter." Separations 9, no. 8 (2022): 195. http://dx.doi.org/10.3390/separations9080195.

Full text

Abstract:

Wall-flow filters are a standard component in exhaust gas aftertreatment and have become indispensable in vehicles. Ash and soot particles generated during engine combustion are deposited in diesel or gasoline particulate filters. During regeneration, the soot particles are oxidized. The remaining ash particles can form different deposition patterns: a homogenous layer or plug-end filling. It has not yet been clarified whether the plug-end filling is first formed by rearrangements of agglomerates before and during the regeneration of the reactive particles. In this study, experiments are carri

APA, Harvard, Vancouver, ISO, and other styles

36

Viertiö, Tyko, Viivi Kivelä, Matti Putkonen, Johanna Kihlman, and Pekka Simell. "Atomic Layer Deposition Coated Filters in Catalytic Filtration of Gasification Gas." Catalysts 11, no. 6 (2021): 688. http://dx.doi.org/10.3390/catal11060688.

Full text

Abstract:

Steel filter discs were catalytically activated by ALD, using a coating of supporting Al2O3 layer and an active NiO layer for gas cleaning. Prepared discs were tested for model biomass gasification and gas catalytic filtration to reduce or eliminate the need for a separate reforming unit for gasification gas tars and lighter hydrocarbons. Two different coating methods were tested. The method utilizing the stop-flow setting was shown to be the most suitable for the preparation of active and durable catalytic filters, which significantly decreases the amount of tar compounds in gasification gas.

APA, Harvard, Vancouver, ISO, and other styles

37

Jensen, David, and Susan Goldsmith. "Evaluation of Critical Gas-Line Filters." Journal of the IEST 30, no. 6 (1987): 39–43. http://dx.doi.org/10.17764/jiet.1.30.6.d218744692jk0t27.

Full text

Abstract:

Gas-line filters are in widespread use in critical semiconductor manufacturing equipment and process lines. In this study, we developed accurate test methods for evaluation of these filters for particulate cleanliness during both steady flow and mechanical shock. Each test method and apparatus is described, and choice of testing conditions are discussed. Filters from four major manufacturers were evaluated and the data are shown and compared.

APA, Harvard, Vancouver, ISO, and other styles

38

Salenieks, S. E., and J. G. Henry. "Response of Anaerobic Filters to Toxic Organics." Water Quality Research Journal 21, no. 4 (1986): 547–59. http://dx.doi.org/10.2166/wqrj.1986.047.

Full text

Abstract:

Abstract The intent of this study was to evaluate the influence of four toxic organic chemicals, namely phenol, benzene, chloroform and pentachlorophenol, on the performance of an anaerobic filter system. Four anaerobic filters, with an empty bed volume of 3.0 litres, were operated at room temperature for approximately 145 days at a detention time of 10.8 hours. A synthetic waste with a COD of 670 mg/L was fed to each filter initially until steady-state conditions prevailed. When this was achieved, each filter was then fed one of the toxic chemicals at a low concentration considered unlikely t

APA, Harvard, Vancouver, ISO, and other styles

39

Hu, Dan Hua, Zhao Xiong Zeng, Jing Song Meng, and Chang Hua Zhang. "Implementation of the Variable Center Frequency Band-Pass Filter Based on FPGA." Advanced Materials Research 1049-1050 (October 2014): 642–45. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.642.

Full text

Abstract:

Digital band-pass filters play a very important role in instrument design. For some special applications, such as corrosion inspection of buried oil or gas pipeline, more than one band-pass filter with different center frequencies are needed to process different frequency signals. FPGA (Field-Programmable Gate Array) are widely used in these applications because of its high compute velocity and flexibility. For low cost and high reliability purposes, it is expected that one digital filter with a fixed configuration parameters can serve as multi different center frequency digital filter. In thi

APA, Harvard, Vancouver, ISO, and other styles

40

Koch, Dietrich, Jonathan Seville, and Roland Clift. "Dusk cake detachment from gas filters." Powder Technology 86, no. 1 (1996): 21–29. http://dx.doi.org/10.1016/0032-5910(95)03033-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Goryachev, I. K. "Unit gas loads on bag filters." Chemical and Petroleum Engineering 34, no. 12 (1998): 747–48. http://dx.doi.org/10.1007/bf02418291.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Moghadam, Hesam Zendehdel, Babak Kheirkhah, and Ashraf Kariminik. "Ethylene Removal by Bio-filters in order to Increase Storage Life of Bananas." International Journal of Life Sciences 9, no. 5 (2015): 62–65. http://dx.doi.org/10.3126/ijls.v9i5.12696.

Full text

Abstract:

Ethylene gas is the simplest plant hormone and cause a variety of physiological effects in plants. This hormone is known as the hormone of aging, due to the hormonal effect on fruit maturation, leaf loss and separation of the fruit from the branches, changing color as fruit maturation because of chlorophyll loss, fruit firmness. Increased ethylene in fruit storage media creates the right conditions for growth of microorganisms such as fungi and bacteria. The purpose of this study was to evaluate the removal of ethylene by bio-filters to extend the shelf-life of fruits was studied at laboratory

APA, Harvard, Vancouver, ISO, and other styles

43

Liu, Xu Dong, and Xiao Guo Bi. "Modeling of Pressure Drop in a 3-D Network Ceramic Diesel Particulate Filter." Advanced Materials Research 311-313 (August 2011): 1924–29. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1924.

Full text

Abstract:

Diesel Particulate Filters (DPFs) provide probably the most effective means of trapping the exhaust emitted particulates from diesel engines. Three-dimension network ceramic filters become a promising alternative to the conventional wall flow filters, since they are effective in filtering small sized particles and provide a large specific surface area for catalytic coating. A mathematical model of pressure drop for a three-dimension network ceramic DPFs is developed. The model calculates the pressure drop of a filter as a function of the geometric filtering properties, operating conditions and

APA, Harvard, Vancouver, ISO, and other styles

44

Ehteshamuddin, Mohammed, Jebreel M. Salem, and Dong Sam Ha. "Design of High Temperature Combline Band-pass Filters for Downhole Communications." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2016, HiTEC (2016): 000312–17. http://dx.doi.org/10.4071/2016-hitec-312.

Full text

Abstract:

Abstract The decline of easily accessible reserves pushes the oil and gas industry to drill deeper to explore previously untapped wells. Temperatures in these wells can exceed 210 °C. Cooling and conventional heat extraction techniques are impractical in such a harsh environment. Reliable electronic designs that can sustain high temperature become necessary. This paper presents RF and IF microstrip combline band-pass filters for downhole communications, which can reliably operate up to 250 °C. Both filters are prototyped on a Rogers RO4003C substrate. Measured results at 250 °C show that the R

APA, Harvard, Vancouver, ISO, and other styles

45

Wang, Liang, Lingyan Cui, Yongsheng Liu, Johanna Riedel, Xiaoming Qian, and Yong Liu. "Electrospun polyimide nanofiber-coated polyimide nonwoven fabric for hot gas filtration." Adsorption Science & Technology 36, no. 9-10 (2018): 1734–43. http://dx.doi.org/10.1177/0263617418807111.

Full text

Abstract:

In the present work, heat-endurable polyimide nanofibrous membrane-coated commercial polyimide nonwoven fabrics were prepared by electrospinning synthesized polyamic acid solution on polyimide mats followed by a thermal imidization process. Polyimide synthesized was confirmed by Fourier-transform infrared spectroscopy and thermogravimetric analysis tests. A higher viscosity of precursor solution resulted in a nanofibrous network coated on the nonwoven fabrics. The coated filter showed lower dimension of pores and greater portion of small pores. The proportion of pores less than 10 µm reached a

APA, Harvard, Vancouver, ISO, and other styles

46

Idwasi, Patrick O., Gary W. Small, Roger J. Combs, Robert B. Knapp, and Robert T. Kroutil. "Multiple Filtering Strategy for the Automated Detection of Ethanol by Passive Fourier Transform Infrared Spectrometry." Applied Spectroscopy 55, no. 11 (2001): 1544–52. http://dx.doi.org/10.1366/0003702011953784.

Full text

Abstract:

Digital filtering methods are evaluated for use in the automated detection of ethanol from passive Fourier transform infrared (FT-IR) data collected during laboratory and open-air remote sensing experiments. In applications in which analyte signals are overwhelmed by the overlapping signals of an interference, the use of multiple digital filters is observed to improve the sensitivity of the analyte detection. The detection strategy is based on the application of bandpass digital filters to short segments of the interferogram data collected by the FT-IR spectrometer. To implement the automated

APA, Harvard, Vancouver, ISO, and other styles

47

Jonsson, Lena, Elzbieta Plaza, and Bengt Hultman. "Experiences of nitrogen and phosphorus removal in deep-bed filters in the Stockholm area." Water Science and Technology 36, no. 1 (1997): 183–90. http://dx.doi.org/10.2166/wst.1997.0042.

Full text

Abstract:

Experimental studies of nutrient removal in a discontinuous downflow two-media filter on a pilot plant scale are described and compared with previously reported results from a continuous upflow filter (DynaSand) studied at full scale. Under controlled conditions both filters show low effluent values of total nitrogen and phosphorus. Removal mechanisms were more complex in the discontinuous downflow filter owing to the use of two media, deposition of sludge on the filter surface, and changes of the biological activity over time after backwashing. The discontinuous downflow filter was much influ

APA, Harvard, Vancouver, ISO, and other styles

48

Al-Hajeri, M. H., A. Aroussl, K. Simmons, and S. J. Pickering. "A parametric study of filtration through a ceramic candle filter." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 219, no. 1 (2005): 77–90. http://dx.doi.org/10.1243/095765005x6908.

Full text

Abstract:

Ceramic candle filters have been developed for cleaning high-temperature high-pressure (HTHP) gas streams. They meet environmental and economical considerations in combined cycle power plant, where gas turbine blades can be protected from the erosion resulting from the use of HTHP exhaust from the fluidized bed. Ceramic candle filters are the most promising hot gas filtration technology and have demonstrated high collection efficiencies at high-temperature high-pressure conditions. This paper reports a computational fluid dynamics (CFD) investigation of a candle filter in cross-flow arrangemen

APA, Harvard, Vancouver, ISO, and other styles

49

Burazer, Milenko, Milinko Grbović, and Vicko Žitko. "Magnetic data processing for hydrocarbon exploration in the Pannonian Basin, Yugoslavia." GEOPHYSICS 66, no. 6 (2001): 1669–79. http://dx.doi.org/10.1190/1.1486769.

Full text

Abstract:

Because magnetic minerals may directly indicate the presence of oil and gas deposits, magnetic methods are applied to hydrocarbon exploration in oil‐bearing sedimentary basins. The basic problem in applying these methods is the isolation of weak magnetic anomalies sourced by low concentrations of the magnetic minerals present. These weak anomalies are often masked by much stronger magnetic anomalies caused by underlying magnetic rocks and/or by rocks in the basin sediments. Weak local anomalies can efficiently be isolated by applying selective 1‐D digital frequency filters. The method of filte

APA, Harvard, Vancouver, ISO, and other styles

50

Numanovich, Abdullayev Ibrohim, and Umirzakov Zuxriddin Axtamjanovich. "Research On The Operation Of Bag Filters For Dust And Gas Cleaning In Cement Production (On The Example Of Factories In The Ferghana Region Of The Republic Of Uzbekistan)." American Journal of Interdisciplinary Innovations and Research 02, no. 11 (2020): 115–23. http://dx.doi.org/10.37547/tajiir/volume02issue11-21.

Full text

Abstract:

Cement production is one of the most common man-made air pollutants. In this regard, the need for dust collection in this process is obvious. The article presents an analysis of the used designs of dust collection devices in the cement production of the Fergana region of the Republic of Uzbekistan. Methods of tissue filter regeneration are analyzed. The results of experimental studies on the state of synthetic fabric bag filters installed on air purifiers from dust and gas flows are presented. The choice of the standard size, design and the required number of fabric bag filters was made. For t

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!