Water-Based Air Conditioning Slashes Energy Usage & Uses No Refrigerants

 Earth News  Comments Off on Water-Based Air Conditioning Slashes Energy Usage & Uses No Refrigerants
Jan 102018
 

water based air conditioningResearchers in Singapore have invented a new air conditioning system that uses no compressor or chemical refrigerants. It is 40% more energy efficient than conventional air conditioners and creates drinking water in the process. Can you say “game changer,” boys and girls?

CleanTechnica

Water & Energy Usage In 2016: Tips To Help Bring Positive Change

 Earth News  Comments Off on Water & Energy Usage In 2016: Tips To Help Bring Positive Change
Feb 282016
 

Deepak Garg_SUS-109

By SUS CEO, Deepak Garg Last month, Smart Utility Systems*, a leading provider of cloud-based platforms for the utility sector and its customers, held its inaugural Cleantech Connect water and energy innovation forum. The idea behind the event was to bring water and energy thought leaders from across various sectors together to exchange ideas about [&hellip

Water & Energy Usage In 2016: Tips To Help Bring Positive Change was originally published on CleanTechnica.

To read more from CleanTechnica, join over 50,000 other subscribers: Google+ | Email | Facebook | RSS | Twitter.


CleanTechnica

EPA analysis details water usage in fracking

 Earth News  Comments Off on EPA analysis details water usage in fracking
Apr 072015
 

Drillers in Pennsylvania used about 11 billion gallons of water to tap shale formations in the Appalachian Basin between 2011 and 2013, according to an analysis by the U.S. Environmental Protection Agency. The EPA examined more than 39,000 disclosures …
fracking wastewater – read more

US Renewable Usage and CO2 Emissions Have Both Substantially Increased

 Earth News  Comments Off on US Renewable Usage and CO2 Emissions Have Both Substantially Increased
Jun 282014
 

Originally Published in the ECOreport 

Screenshot-2014-06-26-19.39.33The Energy Information Administration (EIA) has just released two reports on the first four months of 2014, and the US Renewable Usage and CO2 emissions have both substantially increased.

“Renewable energy sources (i.e., biomass, geothermal, hydropower, solar, wind) provided over 14% of the nation’s electricity for the first four months of 2014 (i.e., 14.05%) – a level that the EIA has been saying might not be reached until 2040,” writes Ken Bossong of the Sun Day Campaign.

Hydropower continues to be the #1 source of renewable energy.

One of the biggest stories is a 108% increase in solar production, over 2013. This is largely the result of the increased capacity in California, where 700 MW of rooftop solar and 2,145 MW of utility scale solar installations were made in 2013. As a result, 14% of that state’s power was obtained from solar in May. This is a marked increase over the 6% from the previous year.

main-1

At noon on June 1, 2014, California set a new record of 4,767 utility-generated solar megawatts  delivered into the California grid.

Despite these increases, natural gas is still California’s biggest energy source. It produced 59% of net generation in 2013, and another 3,940 MW “came online in 2013, which will help address some of the reserve capacity needs for balancing renewables.”

main-1

The wind sector produced 5.15% of America’s energy during the first four months of 2014. There was a new record set in Texas at 8:48 p.m. on March 26. Wind turbines provided 29% of the state’s electricity. EIA predicts a 7% growth rate for wind power 2014, followed by 14% next year.

Ken Bossing points out there has also been an increase in alternative fuels:

  • 11.74% in fuel ethanol (measured as Mbbl) and
  • 10.85% in biodiesel.

The growth of fossil fuel usage has prompted a 5.48% increase in CO2 emissions during the first quarter, primarily from the coal and natural gas sectors.

However the EIA predicts that fossil fuel based CO2 emissions for the year will end up being only be 2.2% higher than 2013.

Coal stocks reachd their lowest levels since 2009 in March 2014 – EIA

The amount of coal usage grew almost 9%, despite the fact there have been no facilities built. This exceeds the growth of natural gas (7.43%) – which leads the nation in installations – and underlines the fact that America actually consumes more coal than gas, though it possesses much higher capacity in the latter.

US Electricity Production by Source & Month, listed in thousand Megawatthours & taken from EIA stats for overall & Renewable Energy - Roy L Hales

US Electricity Production by Source & Month, listed in thousand Megawatthours & taken from EIA stats for Overall & Renewable Energy – Roy L Hales

George Taylor, executive director of Palmetto Energy Research, explained, “The reason is that coal plants are generally baseload or baseload plus some amount of daily load following.  Thus they have capacity factors in the 60 to 80% range.  Some gas generation is also baseload (combined cycle gas plants), but other gas plants (combustion turbines, or “simple cycle”) run at small capacity factors in order to take care of intermediate and peak loads, which are for shorter durations each day.  This lowers the average capacity factor for all gas plants combined.”

“CC and CT should really reported separately.  They only share fuel, not operating characteristics.  CC uses one-third less fuel than CT per kWh of output,” he aded.

“Since the capital cost of gas plants is much lower than the capital cost of coal plants (while the cost of gas fuel is somewhat higher the cost of coal, on a per-kWh basis), this makes economic sense.  Gas plants can also ramp more quickly than coal plants.”

US Renewable Usage and CO2 Emissions Have Both Substantially Increased was originally published on CleanTechnica. To read more from CleanTechnica, join over 50,000 other subscribers: Google+ | Email | Facebook | RSS | Twitter.


CleanTechnica

Vote looms in Georgia over solar power usage – Memphis Commercial Appeal

 Earth News  Comments Off on Vote looms in Georgia over solar power usage – Memphis Commercial Appeal
Jul 072013
 

Vote looms in Georgia over solar power usage
Memphis Commercial Appeal
Manuel Gomes works to install solar panels in front of Dublin High School Tuesday, June 18, 2013, in Dublin, Ga. The solar panels being installed at the rural Georgia school are challenging one of its biggest electric monopolies. For years, Southern Co.

solar panels – read more