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بهترین سایت شرط بندی ایرانی
بهترین سایت شرط بندی ایرانی
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بهترین سایت شرط بندی ایرانی
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بهترین سایت شرط بندی ایرانی
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Global Statistics

All countries
695,781,740
Confirmed
Updated on September 26, 2023 9:04 pm
All countries
627,110,498
Recovered
Updated on September 26, 2023 9:04 pm
All countries
6,919,573
Deaths
Updated on September 26, 2023 9:04 pm

Global Statistics

All countries
695,781,740
Confirmed
Updated on September 26, 2023 9:04 pm
All countries
627,110,498
Recovered
Updated on September 26, 2023 9:04 pm
All countries
6,919,573
Deaths
Updated on September 26, 2023 9:04 pm

Two-sided solar panels that track the sun produce a third more energy

City of Cape Town urges people to leave Kataza the baboon alone

Kataza the baboon. Facebook / Baboon Matters The City of Cape Town has asked the public not to feed a baboon that has relocated to Tokai. The baboon, known as Kataza or SK11, is slowly being integrated into the Tokai troop. Video footage, however, shows humans feeding Kataza. The City of Cape Town has requested that Kataza…

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PICS | Truck driver killed in Pinetown after truck ploughs into several cars

A vehicle that was hit in the accident. A truck driver was killed in a horrific sequence of events following an initial crash in Pinetown. While trying to move the truck after the accident, it appeared to lose control. He died after falling out of the truck which ploughed into several cars and a wall.A truck driver…

42 people in court for R56m police vehicle branding scam

Forty-two people have been implicated in a police car branding scam. Forty-two people have been arrested for their alleged involvement in a police vehicle branding scam. They face a range of charges including corruption, fraud, money laundering, theft and perjury.Of these, 22 are serving police members.Forty-two people are set to appear in the Pretoria Magistrate's Court on…

By Donna Lu

Solar Panels in Germany

Solar panels in a field in Germany

Design Pics / Alamy

Double-sided solar panels that tilt based on the sun’s position could boost the amount of energy collected. The two approaches existed independently before, but researchers have now looks at the effects of combining them.

Carlos Rodríguez-Gallegos at the Solar Energy Research Institute of Singapore and his colleagues found that double-sided solar panels that track the sun would produce 35 per cent more energy and reduce the average cost of electricity by 16 per cent.

The goal for any solar panel is to absorb as much energy from the sun as possible, says Rodríguez-Gallegos. At present, solar panels around the world are predominantly installed with a fixed orientation, and only absorb light from one side.

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The advantage of using two-sided solar panels is that they can also absorb energy that is reflected by the ground onto their rear side, says Rodríguez-Gallegos.

Two types of sun-tracking solar panels currently exist. Single-axis trackers follow the sun over the course of a day, moving from east to west. Dual-axis trackers also follow the sun over the course of a year, changing position according to the seasons, as the sun’s elevation is higher in summer and lower in winter.

In their analysis, the team calculated the global energy generated by a variety of combinations of different solar panel set-ups.

They analysed global weather data from NASA’s Clouds and the Earth’s Radiant Energy System satellite and then estimated the total energy generated in different-set-ups. The team found that double-sided panels would produce 35 per cent more energy when combined with single-axis trackers, and 40 per cent more in combination with dual-axis trackers.

The researchers also factored in the costs involved in the materials, construction and maintenance of these solar panels, which differs between countries.

They found that that combining double-sided panels with single-axis trackers would reduce the levelised cost of electricity – an indicator of how much a consumer pays per kilowatt hour of solar energy produced – the most, by 16 per cent for the majority of the world.

Journal reference: Joule, DOI: 10.1016/j.joule.2020.05.005

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City of Cape Town urges people to leave Kataza the baboon alone

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