Research on Innovation Design of Air Filter Mould Based on Field-Substance Analysis

2015 ◽  
Vol 741 ◽  
pp. 70-74
Author(s):  
Chang Qing Gao ◽  
Jian Hua Sun ◽  
Jie Lv ◽  
Bo Yang
Keyword(s):  
Air Quality ◽  
Formation Process ◽  
High Speed ◽  
Steel Wire ◽  
Surface Shape ◽  
Air Filter ◽  
Condition Systems ◽  
Standard Solutions

Air filter is the important part of air condition systems for the high-speed railways, which has an immediate impact on the air quality. Mould is used for the formation of air filter with the corresponding surface shape. The problem appeared with breakage of the steel wire during the formation process by the mould. Field-Substance analysis and 76 standard solutions are used to describe the problem and generate the solution. The validity of the innovation design is proved with the implementation during the manufacturing practice.

scholarly journals Recent advances in antimicrobial air filter

2018 ◽  
Vol 67 ◽  
pp. 03016 ◽  
Author(s):  
A.A.I.A.S. Komaladewi ◽  
K. Khoiruddin ◽  
I.W. Surata ◽  
I.D.G.A. Subagia ◽  
I.G. Wenten
Keyword(s):  
Air Quality ◽  
Fine Particles ◽  
Antibacterial Properties ◽  
Antimicrobial Activities ◽  
Inorganic Nanoparticles ◽  
Secondary Source ◽  
Air Filters ◽  
Air Filter ◽  
Air Stream ◽  
And Performance

The worsening air quality has become an environmental issue since it has a serious effect on human health. This is generally attributed to airborne particles including various pathogens and others fine particles. Even though air filters show excellent removal efficiency towards pathogens, the captured microorganism can remain viable in the filter, grow, and re-suspended into an air stream resulting in a secondary source of pollutants. Considerable studies have been conducted to develop air filters which also have antibacterial properties for solving this issue. Results of several studies showed that air filters with antimicrobial activities have been successfully prepared by incorporating inorganic nanoparticles and natural plant extracts. With antibacterial properties, the air filters may be potentially used to control air quality, particularly for indoor spaces e.g. hospitals, by removing fine particles and inhibiting microorganism. In this paper, the recent development of antimicrobial air filter is reviewed. In addition, preparation and performance of developed antimicrobial filters are discussed. Prospects and challenges of antimicrobial air filter are also pointed out.

scholarly journals Mechanism of Chip Formation Process at Grinding

2019 ◽  
Vol 297 ◽  
pp. 09002
Author(s):  
Vyacheslav Shumyacher ◽  
Sergey Kryukov ◽  
Olga Kulik ◽  
Xavier Kennedy
Keyword(s):  
Formation Process ◽  
Chip Formation ◽  
High Speed ◽  
Cutting Speed ◽  
Dimensional Accuracy ◽  
Processing Parameters ◽  
Abrasive Grain ◽  
Wave Heating ◽  
High Speed Grinding

The mechanism of chip formation process at grinding is described, which involves a high-speed interaction of abrasive grain and metal, which leads to a concentration of thermal energy in front of the dispersing element (grain), causing a locally concentrated shift in the metal microvolume. In “abrasive grain -metal” contact a dissipative structure is formed which existence is supported by exchange of energy and substance with environment. Due to shock compression of the metal microvolume with abrasive grain, shock-wave heating is realized, initiating emission of electrons ionizing the lubricating cooling fluid in the zone of formation of side micro-scratches left by abrasive. The results obtained in the course of the research can be used to explain the mechanisms of chip formation, as well as the course of the physical and mechanical processes occurring on the surface layers of the grinded workpieces. By controlling chip formation processes at high-speed grinding, by optimally selecting the appropriate ratios between cutting speed and other processing parameters, a reduction in process thermal density can be achieved, which, with the highest productivity, will allow to obtain the required quality of the surface layer of the workpieces and a given dimensional accuracy.

Simultaneous high-speed measurement of 3D surface shape and temperature

2019 ◽  
Author(s):  
Martin Landmann ◽  
Stefan Heist ◽  
Patrick Dietrich ◽  
Peter Lutzke ◽  
Ingo Gebhart ◽  
...  
Keyword(s):  
High Speed ◽  
Surface Shape ◽  
Speed Measurement ◽  
3D Surface

Formation process of the widespread extreme haze pollution over northern China in January 2013: Implications for regional air quality and climate

2014 ◽  
Vol 98 ◽  
pp. 417-425 ◽  
Author(s):  
Minghui Tao ◽  
Liangfu Chen ◽  
Xiaozhen Xiong ◽  
Meigen Zhang ◽  
Pengfei Ma ◽  
...  
Keyword(s):  
Air Quality ◽  
Formation Process ◽  
Northern China ◽  
Haze Pollution ◽  
Regional Air Quality

Influences of End Surface Angle of Workpiece on Burr Formation in High Speed Machining

2009 ◽  
Vol 69-70 ◽  
pp. 384-388
Author(s):  
Qin Xi Shen ◽  
Gui Cheng Wang ◽  
Hai Jun Qu ◽  
Yun Ming Zhu
Keyword(s):  
Aluminum Alloy ◽  
Formation Process ◽  
High Speed ◽  
Shear Angle ◽  
Burr Formation ◽  
High Speed Machining ◽  
Formation Processes ◽  
Key Factors ◽  
2024 Aluminum Alloy ◽  
Surface Angle

The end surface angle of workpece is one of key factors that affect burr sizes and shapes. In this paper, the burr formation process of different end surface angle is simulated with elastic plastic nonlinear element method based on ABAQUS. The influence of end surface angle of workpiece on burr formation processes in high-speed machining 2024 Aluminum alloy is analyzed. The influence of end surface angle on burr sizes and shapes is studied based on equivalent shear strain and negative shear angle. The results have investigated the mechanisms of burr formation fundamentally, which is the basis of burr minimization.

scholarly journals ANALISIS KUALITAS UDARA DI KAWASAN PARKIR TRANS STUDIO MAKASSAR

2020 ◽  
Vol 19 (2) ◽  
pp. 229
Author(s):  
Andi Dala Aprilla ◽  
Rafidah Rafidah
Keyword(s):  
Air Pollution ◽  
Carbon Monoxide ◽  
Air Quality ◽  
Sulfur Dioxide ◽  
Threshold Value ◽  
Quality Standard ◽  
Observational Research ◽  
Air Filter ◽  
Long Time ◽  
Standard Set

ABSTRACT     Air pollution causes changes in the composition of air from its normal state. One of the triggers for air pollution such as Carbon Monoxide (CO) and Sulfur Dioxide (SO2). The presence of CO and SO2 in basements with a certain amount and being in a long time will disrupt human health. The objective of the research is to determine the air quality at Makassar Trans Studio. The design of the research is observational research using descriptive approach through measuring levels of carbon monoxide and sulfur dioxide using Odalog 7000. The result of the research shows that on weekdays the levels of Carbon Monoxide (CO) for daytime were 1.6 bds while at night it was 2.4 bds. While sulfur dioxide (SO2) for the daytime is 0.01 bds while at night is 0 bds. While the holiday of carbon monoxide (CO) for daytime is 3.9 bds while at night is 2.1 bds. While sulfur dioxide (SO2) for the daytime is 0.01 bds while at night is 0 bds. From these results the level of Carbon Monoxide (CO) is still below the specified quality standard (25 bds) and the levels of sulfur dioxide (SO2) are still below the standard set quality (2 bds). Based on the results of the study, it can be concluded that the air quality in parking basement of Makassar Trans Studio is still below the Threshold value according to SNI 19-0232-2005. It is recommended for the mall manager to always supervise and monitor the air filter and place the exhaust fan.

Sign in / Sign up

Export Citation Format

Share Document