Posts Tagged ‘Nuna’

17 October

Veolia World Solar Challenge 2011-Day 2, October 17, 2011


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In the early afternoon unofficial event leader in the Veolia World Solar Challenge: Team Tokai from Japan was just kilometres ahead of Nuon Solar of the Netherlands who were just minutes in front of team Michigan – with the order changing between these three throughout the day. The three leaders are in Wauchope, 116 kilometres south of Tennant Creek, a temporary control stop which has been established  due to closure of Barrow Creek ( closed early afternoon due to bushfires).

Northern Territory Police have  advised the Stuart Highway to be closed to traffic both ways between Ti Tree and Wauchope. Event officials are monitoring the situation and keeping in close contact with participants. All timing and positions of solar vehicles are being recorded.

Oct. 17, Day 2,

of the Veolia World Challenge concluded with the top three teams camped together at a police roadblock near the Devils Marbles in Outback NT (Northern Territory).  Wauchope roadhouse played host to Tokai, Nuna and Michigan as bushfire, raged across the Stuart Highway near Barrow Creek.   Although some teams were held at Tennant Creek a little over 100 Km behind the leaders, the majority of participants are travelling towards Tennant Creek without disruption.

Control Checkpoints:

Location                  Time                 Date Open                     Date Closed_________

Katherine                From 11am       Sunday 16th                    Sunday 16th

Dunmarra                From 2pm         Sunday 16th                    Monday 17th at 3pm

Tennant Creek         From 8:30am   Monday 17th                  Tuesday 18th at 2pm

Barrow Creek           From 11:30am Monday 17th                  Wednesday 19th at 10am

Alice Springs           From 2:30pm   Monday 17th                  Wednesday 19th at 3pm

Kulgera                  From 8:30am   Tuesday 18th                 Thursday 20th at 9:30am

Coober Pedy           From 1pm        Tuesday 18th                  Thursday 20th at 3pm

Glendambo            From 4pm       Tuesday 18th                  Friday 21st at 2pm

Port Augusta           From 10am        Wednesday 19th            Saturday 22 at 12 noon____

writtten and posted by sunisthefuture-Susan Sun Nunamaker,

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2 April

What Is Solar Cell (5)


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Dear readers/friends, I hope you will stay with me for 3 more posts (up to What Is Solar Cell (7)) before we move on to another topic in solar energy. Thank you for your patience.

In the previous post, you have seen that Boron and Phosphorous may be used to as dopping material to be added to Silicon in the process of making semiconductor material for solar cell. But there are also other alternatives.  As a matter of fact, instead of silicon, gallium arsenide (GaAs) is another possibility.  GaAs based multijunction devices are the most efficient solar cells to date, reaching 42.3% by the triple junction metamorphic cell.  High-efficiency multijunction cells were originally developed for applications such as satellites and space exploration.  Triple junction GaAs solar cells were also being used as the power source of the Dutch four-time World Solar Challenge winners Nuna in 2003, 2005, and 2007.

Scientists and engineers are constantly looking for alternatives that would help to increase efficiency and decrease cost.  Most commercially available solar cells are capable of producing electricity for at least 20 years without significant decrease in efficiency.  Typical warranty given by panel manufacturers is for a period of 25-30 years, without having output falling below a specified percentage of the rated capacity. So, there are products and technologies that need to be tested and validated.  In U.S., NREL (National Renewable Energy Laboratory), located in Golden, Colorado, established in 1974 and began its operation in 1977 as the Solar Energy Research Institute, tests and validates solar technologies.

Keep in mind that there are three reliable certifications of solar equipment: UL, IEEE, and IEC.

  1. UL: Underwriters Laboratories Inc. (UL) is an independent product safety certification organization established in 1894 and has its headquarters in Northbrook, IL.
  2. IEEE: Institute of Electrical and Electronics Engineers or IEEE (read I-triple E) is a non-profit professional association dedicated to advancing technological innovation related to electricity. (45% of its members are located outside of US).
  3. IEC: International Electrotechnical Commission is a non-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic, and related technologies.

Now, I have a clip for you at or simply click below:


Stay tuned at the same bat channel…more will be in store for you…

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Posted by sunisthefuture-Susan Sun Nunamaker,
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