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New technology may reduce wind energy costs

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London, The efficiency of wind turbines can be increased and repair costs reduced through a new technique developed by engineers from the University of Sheffield.

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The novel technique can predict when bearings inside wind turbines fail which could make wind energy cheaper.

Unexpected bearing failures are a common problem in wind turbines.
“By removing the risk of a loss of production and the need for unplanned maintenance, it can help to reduce the cost of wind energy and make it much more economically competitive,” said co-author of the paper professor Rob Dwyer-Joyce.
The method, developed by mechanical engineering research student Wenqu Chen, uses ultrasonic waves to measure the load transmitted through a ball bearing in a wind turbine.
The stress on wind turbine is recorded and then engineers can forecast its remaining service life.
When a bearing is subjected to a load, its thickness is reduced by a very small amount due to elastic deformation, and the speed of sound is affected by the stress level in the material. Both these effects change the time of flight of an ultrasound wave through a bearing.
The new method is the only way to directly measure the transmitted load through the rolling bearing components.
It uses a custom-built piezoelectric sensor mounted in the bearing to measure the time of flight and determine the load.
This sensor is less expensive and significantly smaller than currently available, making it suitable for smaller turbines.
It can also provide a better prediction of the maintenance needed, saving money in servicing, researchers said.
The study was published in the journal Proceedings of the Royal Society.

(IANS)

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Xiaomi Registers Research and Development Company in Finland to Work Better on Camera Technology

Notably, the Finnish town of Tampere houses have some of the world's best camera experts

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Xiaomi, Camera, Technology
Xiaomi also decided to tap into Finnish camera expertise by founding a new company in Finland or more precisely, two companies, Xiaomi Finland Oy and Xiaomi Technology Finland Oy. Pixabay

Aiming to work better on camera technology, Chinese handset maker Xiaomi has registered a research and development company in Tampere, Finland, the media reported.

It also decided to tap into Finnish camera expertise by founding a new company in Finland or more precisely, two companies, Xiaomi Finland Oy and Xiaomi Technology Finland Oy, tech portal nokiamob.net reported on Friday.

Notably, the Finnish town of Tampere houses have some of the world’s best camera experts.

The handset maker’s new business activities in Tampere would focus on product development, however, it would initially start with camera technologies.

Xiaomi, Camera, Technology
Aiming to work better on camera technology, Chinese handset maker has registered a research and development company in Tampere, Finland. Pixabay

“Xiaomi follows the steps of Huawei and is finding Finland as an attractive source of skilled labour. Huawei became a new home to lots of former Nokia experts and after partnering with Leica, Huawei devices now have a reputation of being the best or among the best camera phones on the market. Xiaomi is probably hoping to achieve the same thing,” the nokiamob.net report added.

In September 2016, Chinese tech titan, Huawei opened a research and development facility in Tampere.

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The focus of the new centre, located within premises of the Tampere University of Technology, was on camera, audio and imaging technologies for consumer electronics. (IANS)