11/10/2014

Hi Red Sun: Russia's Largest Solar Power Plant Opens In Siberia.

Hi Red Sun: Russia's Largest Solar Power Plant Opens In Siberia.


Siberia isn’t exactly a hot spot for urban development. But according to The Moscow Times, the region’s Atlai Republic is now home to Russia’s largest solar power plant. With plans to boost national renewable energy use from 0.5 to 4.5 percent by 2020, the new five megawatt (MW) Kosh-Agachskata plant is a good start — but is it really all sunshine and rainbows from here?


Location, location;
“It’s always sunny on Chuyskaya Steppe” isn’t much of an exaggeration: the new solar plant’s real estate gets up to 250 sun-filled days per year. The Steppe is also cold — in fact, it’s the coldest place in Atlai at almost 2000 meters above sea level. Building the plant cost more than $135 million and brought Atlai’s solar output up to 45 MW total; according to the Energy Ministry if Russia made best use of renewable resources, it could generate more than four times the energy needed to power the entire country. Renewable energy advocate groups, meanwhile, warn that Russia is behind schedule to hit even 4.5 percent total use in the next six years. So what’s the holdup?

Free energy costly conversion;

Aside from the risks of sunburn and skin cancer, the sun’s energy doesn’t come with a cost. Converting that energy into usable electricity, meanwhile, poses a challenge. A recent Washington Post article notes that the first hurdle is costly solar panels, which require dedicated maintenance and occasional replacement. Still, the price of panels has fallen 75 percent in the last five years and by 2020 solar should match the cost of fossil fuel production.
But that’s not the only stumbling block. Once solar cells capture radiation, it must be converted into usable, AC electricity. In pure photovoltaic power plants, this is accomplished by first converting the energy into DC power, then inverting it to become AC. The problem? On cloudy days there’s little to no energy production. Solar-thermal alternatives, meanwhile, use solar energy to heat synthetic oil known as therminol which is then used to heat water, produce steam and drive a turbine. A backup natural gas boiler is also used to augment the system as needed.
Here, clean energy meets the problem of not-so-clean traditional generation technology. Water-based systems develop scaling over time, limiting their output an increasing their time to boil. As a result, regular cleanings are essential to plant efficiency.
Stop! rushing, me:
Despite the concerns of renewable energy groups over speed, the Kosh-Agachskata plant is a step in the right direction. Chances are that no one’s going to build a hotel on Chuyskaya anytime soon and the country has a vast array of untapped renewable resources — with any luck, the Russian Bear has sunny days ahead.

!!!THANK YOU!!!


Hi Blog Translate

Hi Engineering Jobs!.

Hi Engineering Jobs!.
Hi Search Jobs >Industry Sector > Region > Job Function > Over 100's Of Jobs

Hi Wikipedia Search.

Search results

Hi Contact Form.

Name

Email *

Message *

Hi Source - Latest Category Technical Articles.

Hi Green Tip #4: Hi Size and Select Fans Near Their Peak Total Efficiency.

Even the most efficient fan models can operate inefficiently if improperly sized.Fans selected close to their peak total efficiency (pTE) will use less energy. The 2012 International Green Construction Code requires selections within 10% of peak efficiency, and ASHRAE Standard 90.1,

Energy Standard for Buildings Except Low-Rise Residential Buildings, is considering language that would require a 15% allowable range. If a fan is selected to operate more than 15 point below its peak efficiency, it is probably undersized to result in the lowest purchase price (first cost). The smaller, less-expense fan will have to run much faster with higher levels of internal turbulence than its larger cousin to meet the required air flow, thus consuming a lot more energy.The cost difference to select a larger fan closer to peak operating efficiency is very small when compared to the energy saved.

Simple payback for 10% selections is usually less than one year. Smaller fans operating faster will also require more maintenance and earlier replacement. Smaller fans generate more noise as well.Below is a table showing the output from a fan manufacturer's sizing and selection program. All of the fans in the table would "do the job" of providing the required airflow at the required pressure.

The fan sizes range from 18-inches in diameter to 36-in. Notice that as the fan diameter increases, the fan speed decreases, as does the fan power (expressed as "brake horsepower"). The red region of the table indicates poor fan selection practice - none of these fans have an actual total efficiency (at the airflow and pressure required) within 15 points of peak total efficiency. The green region indicates proper fan selection process - all have an actual total efficiency within 15 points of peak total efficiency.

Note that the 30-in. diameter fan consumes roughly half the power of the 18-in. fan. The lowest cost fan shown is probably the 20-in. fan, with an efficiency of 49%, 29 points off the peak. If this fan runs 6,000 hours per year at a utility rate of 10 cents per kwh, it will cost $4,300 a year to operate. A more efficient selection might be the 24-in. fan because it is "Class I" and complies with both ASHRAE 90.1 and the Green code requirements. It has an actual efficiency of 69%, 10 points less than the peak efficiency of 79%. This fan would cost $3,100 to operate, which is probably more than the fan itself costs. A more efficient 30 inch selection is only 1 point from its peak efficiency of 83% and will consume only $2,600 per year, saving $500 a year relative to a 24-in. fan, and $1,700 a year over the lowest cost fan. Generally, the difference in initial cost of the most efficient fan selection is paid back in less than 5 years over more common less efficient alternatives. Perhaps this observation will bring it home.

Most fans consume more each year in energy cost than they are worth. So, when you buy a fan, think of it as a liability, not an asset. Your objective should be to make the liability placed on those who will pay future energy bills as low as possible. The leverage implicit in choosing a larger, more efficient fan is much greater than most people appreciate. And fans last a long time – 20 years plus – so choose wisely.The bottom line is this. Right-sizing a fan can yield energy savings and generate a lot of operating cost savings for the facility owner or occupants for many, many years.

Hi Total Pageviews.