Energy

Wasted heat from air conditioners causes warmer nighttime temperatures
June 12, 2014 08:01 AM - Allison Winter, ENN

With summer temperatures fast approaching, households across the country are installing and prepping air conditioning units in anticipation of hot, sticky weather. However, a potentially brutal cycle may be in store if summertime extreme-heat days are projected to become more frequent and intense as a result of climate change. According to a new study conducted in Phoenix by Arizona State University researchers, so much wasted heat is emitted by air conditioning units that it actually raises the city's outdoor temperature at night by 1-2.7 degrees! Consequently, these warmer temperatures may encourage individuals to further their demands and energy use of their air conditioners. The research, published last month in the Journal of Geophysical Research, investigates the effects of air-conditioning systems on air temperature and examines their electricity consumption for a semiarid urban environment.

China and Coal
June 6, 2014 06:56 AM - Alex Kirby, The Ecologist

Coal consumption in China is likely to dwindle rapidly, writes Alex Kirby, leaving its own mining sector and foreign coal exporters in serious trouble. Australia and Indonesia are at greatest risk as China may soon stop importing any coal at all. Investors need to dispel any belief that Chinese coal demand is insatiable, and integrate this transition into their decision-making. Analysts believe that China - the world's largest producer and consumer of coal, accounting for almost half of global consumption - could be close to making an abrupt, drastic change of track.

CO2 emissions in EU down significantly
June 5, 2014 03:47 PM - EurActiv

The European Union’s greenhouse gas emissions have fallen by 19.2% compared to 1990s levels, according to the European Environment Agency. EU emissions dropped 1.3% in 2012, reaching their lowest level ever recorded, according to data reported to the United Nations by the EEA. The bloc's greenhouse gas output decreased by 1082 megatonnes since 1990, more than the combined emissions of Italy and United Kingdom in 2012.

EU reacts to Obama's Clean Power Plan
June 3, 2014 10:11 AM - Editor, ENN

After the US EPA announced their plan to cut US power plant emissions 30% by 2030, the European Union (EU) reacts, praising the Emission Performance Standard (EPS) for its vision while serving as a "positive signal" to other countries. "This proposed rule is the strongest action ever taken by the U.S. government to fight climate change," the EU's climate action commissioner, Connie Hedegaard said in a reaction statement. "If implemented as planned, this measure will help the country meet its 2020 emissions target."

US EPA Releases Clean Power Plan Proposal
June 2, 2014 01:27 PM - Editor, ENN

The U.S. Environmental Protection Agency is releasing the Clean Power Plan proposal today. This is the first attempt to cut carbon pollution from existing power plants, the single largest source of carbon pollution in the United States. According to the EPA, power plants account for roughly one-third of all domestic greenhouse gas emissions in the United States. While there are already standards for the level of arsenic, mercury, sulfur dioxide, nitrogen oxides, and particle pollution that power plants can emit, there are currently no national limits on carbon pollution levels.

Utility emissions in US trending down
May 31, 2014 09:16 AM - NRDC

A new report on U.S. power plant emissions from the country's top 100 electric power producers shows a downward trend in nitrogen oxides (NOx), sulfur dioxides (SO2), mercury and carbon dioxide (CO2) since 2000, with CO2 emissions decreasing 13 percent between 2008 and 2012. The findings show that the industry is already shifting toward a combination of increased energy efficiency and lower carbon fuel sources, which should help it meet new Environmental Protection Agency (EPA) carbon standards expected to be announced on June 2. "The electric power industry is firmly on the path toward a low carbon energy future, and history shows that it is not only capable of meeting new pollution limits, but that it can do so while keeping our lights on and our economy growing," said Mindy Lubber, president of Ceres, a nonprofit sustainability advocacy group which helped produce the report. "EPA's proposed standards will stimulate further investment in low-carbon, low-risk resources like renewable power and energy efficiency."

British Airways Turns Garbage into Jet Fuel: Sustainable Solution or Incineration in Disguise?
May 30, 2014 02:03 PM - Alexis Petru, Triple Pundit

Can garbage power your plane ride from New York to London? That’s the idea behind a new production plant that will transform waste from London's homes and businesses into a jet fuel that costs about the same price as conventional petroleum-based fuel but burns cleaner and produces fewer carbon emissions.

Rules to cut carbon emissions also reduce harmful air pollution
May 28, 2014 08:58 AM - ClickGreen Staff, ClickGreen

Setting strong standards for climate-changing carbon emissions from power stations would provide the added bonus of reducing other air pollutants that can make people sick and damage the environment. A first-of-its-kind study released today by scientists at Syracuse University and Harvard has mapped the potential environmental and human health benefits of power plant carbon standards and found potential for reductions of more than 750 thousand tons of other harmful air pollutants across the US.

EPA doles out grants to replace old diesel engines on tug boats
May 27, 2014 03:17 PM - Allison Winter, ENN

The shipping industry is one of the most under-regulated industries in the world due to outdated and international regulations that are difficult to enforce on a global scale. And as these ships enter our harbors and ports close to home, their operations have the potential to generate smog-forming emissions and other pollutants that are linked to various health problems in susceptible populations. In an effort to combat some of the pollution expelled from dirty diesel engines, the U.S. Environmental Protection Agency has allotted over one million dollars to help two specific organizations replace their old engines with less polluting models. According to the EPA, the projects will cut emissions of harmful nitrogen oxides and particulate matter among other pollutants which are linked to asthma, lung and heart disease and premature death.

Air Conditioning: Cooler on the Inside, Hotter on the Outside!
May 25, 2014 09:30 AM - Editor, ENN

We all love to be comfortable in our homes and businesses. We use air-conditioning to provide comfortable temperatures indoors. Air conditioners work basically by moving hotter air from inside to outside. Does this have an impact on climate? Global warming? A team of researchers from Arizona State University has found that releasing excess heat from air conditioners running during the night resulted in higher outside temperatures, worsening the urban heat island effect and increasing cooling demands. "We found that waste heat from air conditioning systems was maximum during the day but the mean effect was negligible near the surface. However, during the night, heat emitted from air conditioning systems increased the mean air temperature by more than 1 degree Celsius (almost 2 degrees Fahrenheit) for some urban locations," said Francisco Salamanca, a post-doctoral research scientist at Arizona State University's School of Mathematical and Statistical Sciences.

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