Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Foggy road

18.10.2002


What happens if fog comes on roads? First of all, visibility falls down, so the risk for a car accident increases, especially on highways. Scientists from Central Aerological Observatory have constructed a special electrostatic filter, which eliminates the fog at a distance up to 10 meters. The filter looks like a metal frame with a precipitation electrode - thin metal plates, separated with high-voltage isolators. It also has a corona-forming electrode of a twisted wire. The unit is grounded with a metal net.



Current fog dissipation methods are good only for cold fogs, which appear at temperatures below zero. Warm fogs are a bit worse: they are thermodynamically stable, and it requires much energy to dissipate them. There is a good method of electrostatic fog precipitation, used on factories: fog particles caught into electrostatic field between two electrodes - corona-forming and precipitation - acquire electrical charge (because of ionised air) and start moving towards the precipitation electrode. They stick to it and lose their charge.

The scientists tried to apply this method to open air. For testing purposes they created fog and then dissipated it under various weather conditions - on a sunny day with gradual temperature increase, or cloudy day with no temperature change, or in cold evenings. During these experiments, the scientists found the best electrodes shape and corona-forming voltage. So, electrostatic method takes 7 minutes for fog to disappear, while under natural conditions it takes nearly an hour.


The filter was constructed using the data from Central Aerological Observatory. It was tested on 4 kilometres of highway Venice - Trieste. After carrying out a series of tests, it was found that the best way of using filters is to place them along the central reservation, separated by screens of 3 meters wide and 2 meter high. Such positioning provides 10 meters of clear distance at both sides from the filter.

Irina Sigunova | alfa

More articles from Transportation and Logistics:

nachricht Tool helps cities to plan electric bus routes, and calculate the benefits
09.01.2017 | International Institute for Applied Systems Analysis (IIASA)

nachricht Realistic training for extreme flight conditions
28.12.2016 | Technical University of Munich (TUM)

All articles from Transportation and Logistics >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Transport of molecular motors into cilia

28.03.2017 | Life Sciences

A novel hybrid UAV that may change the way people operate drones

28.03.2017 | Information Technology

NASA spacecraft investigate clues in radiation belts

28.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>