Immagine
 Trilingual World Observatory: italiano, english, română. GLOBAL NEWS & more... di Redazione
   
 
\\ Home Page : Articolo
TenKsolar says it can increase the amount of solar power generated on rooftops by 25 to 50 percent, and reduce the cost of solar power.
By Admin (from 22/09/2011 @ 08:00:12, in en - Global Observatory, read 1490 times)

A startup called TenKsolar, based in Minneapolis, says it can increase the amount of solar power generated on rooftops by 25 to 50 percent, and also reduce the overall cost of solar power by changing the way solar cells are wired together and adding inexpensive reflectors to gather more light.

TenKsolar says its systems can produce power for as little as eight cents a kilowatt-hour in sunny locations. That's significantly more expensive than electricity from typical coal or natural-gas power plants, but it is less than the average price of electricity in the United States.

Solar cells have become more efficient in recent years, but much of the improvement has gone to waste because of the way solar cells are put together in solar panels, the way the panels are wired together, and the way the electricity is converted into AC power for use in homes or on the grid. Typically, the power output from a string of solar cells is limited by the lowest-performing cell. So if a shadow falls on just one cell in a panel, the power output of the whole system drops dramatically. And failure at any point in the string can shut down the whole system.

Dark Mirror: Solar panels (with silver lines) are paired with reflectors (the solid dark material) to increase the amount of power a rooftop array can generate.

TenKsolar has opted for a more complex wiring system—inspired by a reliable type of computer memory known as RAID (for "redundant array of independent disks"), in which hard disks are connected in ways that maintain performance even if some fail. TenKsolar's design allows current to take many different paths through a solar-panel array, thus avoiding bottlenecks at low-performing cells and making it possible to extract far more of the electricity that the cells produce.

The wiring also makes it practical to attach reflectors to solar panels to gather more light. When solar panels are installed on flat roofs, they're typically mounted on racks that angle them toward the sun, and spaced apart to keep them from shading each other over the course of the day. Reflectors increase the amount of light that hits a solar array, but they reflect the sunlight unevenly. So in a conventional solar array, the output is limited by the cell receiving the least amount of reflected light. The new system can capture all the energy from the extra, reflected light. "The small added cost we put in on the electronics is paid back, plus a bunch, from the fact that we basically take in all of this reflected light," says Dallas Meyer, founder and president of TenKsolar. "We've architected a system that's completely redundant from the cell down to the inverter," he says. "If anything fails in the system, it basically has very low impact on the power production of the array."

The reflectors use a film made by 3M that reflects only selected wavelengths of light, reducing visible glare. The material also reflects less infrared light, which can overheat a solar panel and reduce its performance.

Meyer says the system costs about the same as those made by Chinese manufacturers but produces about 50 percent more power for a given roof area. Power output is about 25 percent higher than from the more expensive, high-performance systems made by SunPower, he says.

The new wiring approach does have a drawback: because it's new, the banks that finance solar-power installations may have doubts that the system will last for the duration of the warranty, and this could complicate financing, says Travis Bradford, an industry analyst and president of the Prometheus Institute for Sustainable Development.

TenKSolar, which has so far raised $11 million in venture funding and has the capacity to produce 10 to 12 megawatts of systems a year, is working on partnerships with larger companies to help provide financial backing for guarantees of its products.

Source: Technology Review

Articolo Articolo  Storico Storico Stampa Stampa  Share
Cannabis seeds, Autoflowering seeds, Greenhouse, Sweet Seeds, Dutch Passion
comments powered by Disqus
 
Nessun commento trovato. No comments found. Nici un comentariu găsit.

Anti-Spam: dial the numbers CAPTCHA
Text (max 5000 characters)
Nome - Name - Nume
Link ( OPTIONAL - visible on the site - NOT a must )


Disclaimer
Tuo commento sarŕ visibile dopo la moderazione. - Your comment will be visible after the moderation. - Comentariul tău va fi vizibil după moderare.
Ci sono 3636 persone collegate

< luglio 2019 >
L
M
M
G
V
S
D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
       
             

Titolo
en - Global Observatory (605)
en - Science and Society (594)
en - Video Alert (346)
it - Osservatorio Globale (503)
it - Scienze e Societa (555)
it - Video Alerta (132)
ro - Observator Global (399)
ro - Stiinta si Societate (467)
ro - TV Network (149)
z - Games Giochi Jocuri (68)

Catalogati per mese - Filed by month - Arhivate pe luni:

Gli interventi piů cliccati

Ultimi commenti - Last comments - Ultimele comentarii:
Hi, it's Nathan!Pretty much everyone is using voice search with their Siri/Google/Alexa to ask for services and products now, and next year, it'll be EVERYONE of your customers. Imagine what you are ...
15/01/2019 @ 17:58:25
By Nathan
Now Colorado is one love, I'm already packing suitcases;)
14/01/2018 @ 16:07:36
By Napasechnik
Nice read, I just passed this onto a friend who was doing some research on that. And he just bought me lunch since I found it for him smile So let me rephrase that Thank you for lunch! Whenever you ha...
21/11/2016 @ 09:41:39
By Anonimo


Titolo

Latest NEWS @
www.TurismoAssociati.it

Non-Hodgkin lymphoma cured by CANNABIS. The video of Stan and Barb Rutner.

Dr. Joycelyn Elders, U.S. surgeon general: Myths About Medical Marijuana in The Providence Journal, 2004.

Marihuana vindeca CANCERUL: marturii despre uleiul de cocos si canabis.

Yahoo Incorporated Mail. My account recovery information is incorrect. The Password Helper says my password can't be reset online. "First time signing in here?" message.

All information in a video about Donatio Mortis Causa and The Venus Project

What is TOR browser?

Icahn launches proxy fight after stalled talks with Occidental CEO

Asia stocks firm as Fed props up rate cut expectations

Microsoft shares hit record highs, powered by growing cloud sales

Japan summons South Korea envoy in escalating row over wartime forced labor

Japan says no comment on International Court of Justice plan in South Korea dispute

U.S.-China officials discuss trade; Mnuchin eyes possible in-person talks

Ultimele articole - Antena3.roHOROSCOP 19 iulie 2019. Berbecii se apuca de renovari în casa, Gemenii au o idee sa faca bani

VREMEA 19 IULIE. Temperaturile încep sa creasca u?or, dar nu scapam de ploi

HOROSCOP 19 iulie 2019. Berbecii au probleme în cuplu, Gemenii gasesc solu?ii la toate problemele

CALENDAR ORTODOX 19 IULIE. Ce sfânta mare sarbatoresc cre?tinii orotodoc?i astazi

”Am 49 de ani ?i so?ia mea refuza sa mai faca amor cu mine. Am încercat de mii de ori sa o conving, dar în zadar. În cele din urma, am gasit solu?ia la problema mea"

Viata dubla pe internet a lui Gheorghe, preotului-pedofil. Cerea bani pe Facebook, dar pe Instagram facea altceva: „Vreau sa nu mai patrunda Diavolul, sa nu mai am ispite“





19/07/2019 @ 06:03:42
script eseguito in 802 ms