Understanding Solar Panel Efficiency And What It Means For Your System

By Christopher Lollini

At the heart of any modern residential solar power system are the PV solar panels. These solar panels are the critical component in the system that does the actual conversion of sunlight to electricity. They do this through the use of solar cells that are designed to take advantage of the photovoltaic (PV) effect. The PV effect occurs in certain materials, that when exposed to direct sunlight will generate a small DC current. In the case of modern solar panels for homes, these solar cells are made from a silicon-based compound that has improved dramatically over the years in efficiency. These modern solar cells are able to provide far more power than older versions and are much more durable as well. In some cases these new solar panels for homes can deliver over twice as much power from the same amount of sunlight as older panels because of these improved solar cells.

Improved Efficiency, Important for Several Reasons

The fact that these new solar panels for homes are more efficient than older versions is important for most homeowners for several reasons. It means that most home solar power systems will need less of these newer, high efficiency solar panels to generate the same amount of power as an older and larger system required in the past. This can save you both roof space and the expense of all the additional panels you would have needed for an older system. It can also help lower the installation cost and complexity since there are less solar panels to mount and wire into the system. All of this helps to make these modern solar panels for homes a much better value for consumers.

In addition to greater solar panel efficiency, there have also been improvements and innovations to the inverters that take the DC output from these solar panels and convert it into AC power that can be used by the home. Modern versions of these inverters are much more efficient and are able to convert a larger portion of the power they receive from the solar panels into useful solar power for homes. Since you are wasting less of this solar power to the conversion process with these new inverters, you need even fewer panels than older systems required.

[youtube]http://www.youtube.com/watch?v=bnzL1XpWTiw[/youtube]

The Advent of the Micro-Inverter

Another emerging trend among some solar panel vendors is to actually include a micro-inverter built into the solar panel itself, and do the conversion of power at the panel. This helps to improve solar panel efficiency even further by eliminating the power loss associated with long cable runs between the solar panels and a standard inverter that is typically located near the power panel of the home. This power loss could account for as much as 15% or more of the total system power in older systems and was an expensive problem for many homeowners that can be eliminated with these newer solar panels for homes.

Durability Improvements

Another advantage that these newer solar panels provide is their durability. Older panels could typically last 10 years or more on a home but would start to generate less power each year as their solar cells decayed. This meant that even though these older panels were still generating power, they would degrade to the point that they needed to be replaced far sooner than expected. Most newer panels can not only last longer than older panels, they are also able to generate their peak output for most of their lives and not suffer from the slow degradation like older panels. In fact many of the manufacturers will now warranty their panels for both guarantees against failure in general and guarantees against a degrading power output. This means you can have a panel replaced under warranty if it fails outright, or if it starts to generate significantly less power over time. This gives you peace of mind that your investment will provide the power you require for decades to come.

About the Author: Hope this information helped answer your questions. Have another question you need answered? Want to get more great content and information about topics like solar panel efficiency and get a FREE informative 5-day eCourse to learn more about solar power for homes, then check out my website. Hope to see you soon, thanks!

Source: isnare.com

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UK company “seriously considering” GPS tracking devices in school uniforms

Saturday, August 25, 2007

The leading supplier of school uniforms in the United Kingdom, Lancashire-based manufacturer Trutex, has announced it is “seriously considering” including GPS tracking devices in future ranges of its uniform products after conducting an online survey of both parents and children.

“As a direct result of the survey, we are now seriously considering incorporating a [tracking] device into future ranges” said Trutex marketing director Clare Rix.

The survey questioned 809 parents and 444 children aged nine to 16. It showed that 44% of parents were worried about the safety of pre-teen children, and 59% wanted tracking devices installed in school apparel. 39% of children aged nine to 12 were prepared to wear clothing with tracking devices in them, while teenagers were notably less enthusiastic and more wary of what Trutex has admitted they see as a “big brother” concept.

However, Trutex has claimed the tracking devices would bring about worthwhile benefits, including being a valuable resource for parents who wanted to keep a close eye on where their children were at all times.

“As well as being a safety net for parents, there could be real benefits for schools who could keep a closer track on the whereabouts of their pupils, potentially reducing truancy levels” says Rix.

Each year, Trutex supplies 1 million blouses, 1.1 million shirts, 250,000 pairs of trousers, 20,000 blazers, 60,000 skirts and 110,000 pieces of knitwear to the UK.

It is not the first company to manufacture school uniforms with a central focus on child safety; last week Essex firm BladeRunner revealed it was selling stab-proof school blazers to parents concerned about violence against their children. The blazers were outfitted with Kevlar, a synthetic fibre used in body armour. It has already received orders internationally, including Australia.

If the Trutex tracking devices go ahead, it is unclear where in the uniform they will be located.

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Canadian National buys Chicago railroad

Monday, February 2, 2009

Canadian National (CN), the Montreal-based rail operator, has bought the main lines of the U.S. Elgin (EJ&E).

CN began to buy the railway from U.S. Steel in September 2007. Regulatory approval in the US was given in January. The Canadian railway company will use the lines to avoid congestion in Chicago, taking freight along a 300km loop through the American Midwest. The route will begin the new operations on March 4.

U.S. Steel will keep the facilities and staff required to keep the Gary steelworks in Indiana rail connected, renaming the resulting operations to the Gary Railway. The rest of the EJ&E will be integrated into CN’s existing networks. The railway passes through suburban areas of Chicago, causing residents to fear the noise and traffic that greater intensity of operation could bring.

The Surface Transportation Board (STB), the US rail regulator, has required CN to make upgrades to ease local concerns but opponents have vowed to continue to fight against the changes. The Chicago Tribune speculates that CN will switch trains from the former Wisconsin Central line to the EJ&E south of Mundelein. This would reduce traffic in suburbs north of the crossover from 19 trains a day to just two; whilst south of the junction trains would increase from five a day to 20.

CN paid $300 million for the lines, and will pay $100 million to upgrade them and $60 million to make the STB’s required improvements.

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Raw Opals spend week preparing for London Games

Monday, May 21, 2012

Bruce, Canberra — This past week, an overstocked Australian Opals, the women’s national basketball team, prepared for the 2012 Olympic Games in London with a weeklong training camp at the Australian Institute of Sport (AIS) to be used to help narrow the nineteen member Opals squad down to the twelve that go to the Games, and provide players who rarely play together an extended period of time to play together in order to improve on court dynamics.

Camp started on Sunday, with players arriving from hometowns around Australia including Cairns, MacKay, Gladstone, Brisbane, Adelaide, and Melbourne.

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Cayla Francis, Jenna O’Hea and Marianna Tolo at a practice on Wednesday.Image: Bidgee.

Kristen Veal at a practice on Wednesday.Image: Bidgee.

A strength and conditioning session on TuesdayImage: Bidgee.

A strength and conditioning session on TuesdayImage: LauraHale.

Lauren Jackson on MondayImage: Bidgee.

Marianna Tolo on MondayImage: Bidgee.

Carrie Graf on MondayImage: Bidgee.

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Part 1 of a press conference at AIS with Carrie Graf, Lauren Jackson and Jenna O’Hea speakingVideo: Bidgee.

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Part 2 of a press conference at AIS with Carrie Graf, Lauren Jackson and Jenna O’Hea speakingVideo: Bidgee.

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Part 3 of a press conference at AIS with Carrie Graf, Lauren Jackson and Jenna O’Hea speakingVideo: Bidgee.

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Part 4 of a press conference at AIS with Carrie Graf, Lauren Jackson and Jenna O’Hea speakingVideo: Bidgee.

The defending champions, the United States women’s national basketball team, are perceived as the Australian Opals’ main competitors. In the last three Olympic Games the Opals got silver medals. In each of these cases the United States got first place. Coach Carrie Graf said “thinking about the US too soon in inappropriate”, “Our focus is first and foremost, game by game winning our pool”. Amongst the Australian Opals’ competitors in the pool are Brazil, Russia, and Great Britain. Carrie Graf said Great Britain “will put up a fight on home turf” but there is a “world class [AIS] facility” and “world class medical support staff” supporting the team.

Australian Opal player Penny Taylor recently suffered injury from a torn anterior cruciate ligament, meaning she cannot play Olympics this year. In regards to the situation player Lauren Jackson, who is going into her fourth Olympics, said “you would never wish that upon anybody.” She says as a team they have to “move on, move through that” and “come together” to pick up their offence and defense. Despite the loss of one of their key players she says “we definitely have the talent there” and the team is all “on the same page.” She feels “pretty confident” and speaks of “very exciting” times ahead. Jenna O’Hea is going into her first Olympics with the team. She is still “pinching” herself and says she is taking it “day by day”.

A typical day at the camp might start with a 7.00am – 8.30am breakfast at the AIS Dining hall, before one and a half or two hours of court, gym, or swimming training. The middle of each day might consist of media meetings, medical checks, team meetings, and time to practise shooting. Around 12.00pm, the players meet to eat lunch and recover from the morning. The afternoon typically consists of more training, and some scrimmage games. Players usually finish around 7.00pm for dinner, and perhaps a massage.

The nineteen players in attendance this week at training camp were Suzy Batkovic, Abby Bishop, Elizabeth Cambage, Rohanee Cox, Cayla Francis, Kristi Harrower, Laura Hodges, Natalie Hurst, Lauren Jackson, Rachel Jarry, Kathleen MacLeod, Jenna O’Hea, Samantha Richards, Jennifer Screen, Belinda Snell, Marianna Tolo, Kristen Veal, Carly Wilson, and Hanna Zavecz. Basketball Australia has named fifteen players that are to attend the second phase of the camp: Suzy Batkovic, Abby Bishop, Elizabeth Cambage, Kristi Harrower, Laura Hodges, Lauren Jackson, Rachel Jarry, Kathleen MacLeod, Jenna O’Hea, Erin Phillips, Samantha Richards, Jennifer Screen, Belinda Snell, Marianna Tolo, and Hanna Zavecz.

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Victoria power grid collapses due to spot fires

Tuesday, January 16, 2007

Large parts of Victoria were hit with power outages after bushfires near Benalla knocked out power transmission lines connecting the state to the national electricity grid at approximately 4:00 p.m. local time. Melbourne, Geelong, Ballarat and Bendigo were all affected.

Paul Price from the national electricity grid supervisor NEMMCO said that today set an all-time record for electricity demand.

Emma Daniell, from the power supplier SP AusNet said the result of the fires “prompted an automatic load reduction system to kick in, reducing power supply to customers”. These rolling blackouts are occurring across the surrounding suburbs lasting one hour a time.

The blackout affected about 200,000 homes, 1,200 traffic lights and “mobile base stations”. Trains and trams were reduced to a crawl, with buses replacing trains between Essendon and Kensington railway stations, and on the Werribee loop.

Geelong was the region worst affected, with the entire city losing power from 4 p.m. Power was restored to the central business district area shortly after 5 p.m., however many parts of the city were not restored until 8 p.m.

The Australian Open tennis tournament was not affected.

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Air Pacific re-brands as Fiji Airways

Saturday, June 29, 2013

Fiji’s national airline Air Pacific has now officially returned to its original name: Fiji Airways. Fiji Airways adopted the Air Pacific name in 1971, slightly prior to its first international flight on June 3, 1973. The re-brand was described by interim CEO Aubrey Swift as allowing the airline to align itself “closer with Fiji as a destination”. The name change is designed in part to reduce the confusion which surrounded the name Air Pacific. Swift noted that “Air Pacific just didn’t resonate with our customers” and said that same people “thought we were an air conditioning company”.

Along with the name change, the airline has redesigned its website, and changed the name of each of its classes of service. Pacific Voyager and Tabua Class have been replaced with economy and business class respectively. The airline has also introduced plans to overhaul its fleet of older Boeing 747s with Airbus A330s. It has said that the completion of this overhaul and the re-branding efforts will be completed by the end of the year.

The airline’s new brand-mark and livery features a masi design created by Fijian artist, Makereta Matemosi. The new identity is to “symbolises the airline’s new identity and epitomises all that Fiji Airways represents. It is authentic, distinctive, and true to the airline’s Fijian roots”, the airline said.

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Higuaín leaves Napoli for Juventus

Wednesday, July 27, 2016

Yesterday, Italian football club Juventus F.C. announced signing of Argentine striker Gonzalo Higuaín from their rival club S.S.C. Napoli. 28-year-old Higuaín signed a five-year contract with the Old Lady for a Italian record transfer fee of €90 million.

Debuting at the age of 17 in 2005, Higuaín has made 329 league appearances and scored 191 goals. He joined Spanish capital club Real Madrid in 2006. Spending six-and-half seasons with Los Blancos, Higuaín has won the La Liga title there.

Higuaín — nicknamed Pipita — joined Napoli in 2013. While there he broke the goal scoring record set by Gunnar Nordahl of the Italian Serie A, netting 36 goals in 35 appearances. He helped Napoli qualify for the UEFA Champions League as the club finished second in the league.

In remarks to Gazetta World following Higuaín’s agreement to the contract, AS Roma captain Francesco Totti said, “Footballers today are a bit like nomads[…] They follow money and not their hearts.” 40-year-old Totti has played 25 years for Roma, signing a one-year contract extention last month.

Napoli’s president Aurelio De Laurentiis said, “Some believe that talking of a betrayal is an exaggeration, but I think differently. In this move there is the full meaning of a betrayal, which includes ingratitude.” ((it)) Italian language: C’è chi dice che parlare di tradimento sia esagerato, e invece io penso il contrario, perché in questa scelta c’è il senso pieno del tradimento, che comprende anche l’ingratitudine

Former Agrentine captain and Napoli legend Diego Maradona said, “This Higuain affair is hurting me because he is going to a direct rival like Juventus. But we cannot blame the player either. A player has a responsibility to himself and it is those fat cats of business that are grinning the most in this case. Nobody thinks of the fan.” ((es)) Spanish language: Me duele lo de Higuaín, porque va a un rival directo, como la Juventus. Pero tampoco se le puede echar la culpa al jugador. Porque el jugador tiene su responsabilidad, pero los que hacen el negocio son los más felices. Nadie piensa en el hincha.

Higuaín has been assigned the number 9 jersey.

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Man claims Blue Man Group put camera down throat; allegations denied

Wednesday, January 30, 2008

The Blue Man Group issued a press release Friday morning refuting a man’s claims that they forced a tube down his throat as part of a show.

Earlier this week, audience participant James Srodon filed a court claim in Cook County Circuit Court that members of performance trio forced a dirty tube down his throat against his will while he was part of a skit called “Esophagus Video.”

The description of the incident is not true, says the musical performance group.

“We are shocked and surprised to learn of the allegations made in reference to one of our comedic pieces, ‘Esophagus Video,'” the group said.

Srodon claims that he was unexpectedly approached and had a tubular camera forced down his throat during an October 2006 performance at Chicago’s Briar Street Theatre. He claims he had his head was forced back and one of the Blue Men forced the tube in him. The joke is to show footage from the inside of the audience member.

The Blue Man Group says that nothing actually goes down anyone’s throat.

” ‘Esophagus Video’ is simply an illusion,” the group wrote in its press release. “A camera is held in an actor’s hands, the actor’s hands are placed near an audience member’s mouth (not on or in). The live-feed video screen then switches to a pre-recorded medical video, resulting in the hilarious and absurd illusion that the audience is peering down an individual’s esophagus. Because the camera never enters the mouth, the execution of this illusion could not possibly put anyone at risk of injury.”

The group added the skit and skits like it have been performed for the past 15 years by them without complaint.

The Californian is suing on the basis that the alleged tube was unsafely dirty and that his experience being cornered gave him post-traumatic stress and nightmares.

Srodon also claims he lost fillings and dental work because of the tube. The suit is reported to be seeking damages of more than $500,000, however the group reported that they have not been served papers as of Friday morning.

The Blue Man Group has a lot of audience participation as part of their show and is a Las Vegas fixture. The music and comedy group came to public consciousness around 2000.

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