Sentences with phrase «released during combustion»

The most commonly employed systems of classification are those based on analyses that can be performed relatively easily in the laboratory — for example, determining the percentage of volatile matter lost upon heating to about 950 °C (about 1,750 °F) or the amount of heat released during combustion of the coal under standard conditions.

The rickety carbon - neutral status of woody bioenergy has been sold to the public on a deceptively simple principle: Although a tree's carbon is released during combustion to produce energy, there are no net emissions because a new tree will absorb the resulting carbon dioxide.

Over the lifetime of the released CO2, the trapped heat exceeds the heat released during combustion by a factor of more than 100,000, researchers report online June 2 in Geophysical Research Letters.

Not exact matches

The new study, published last week in the journal Environmental Research Letters, showed that emissions of sulfur dioxide, a common air pollutant released during coal and fossil fuel combustion, increased from 2000 to 2006, after which they started to decline.

• Rice offers a balancing ying - yang effect and releases several ethereal oils during combustion — thereby setting off chemical reactions.

This is because the amount of CO2 released from E85 during combustion is practically identical to the level of carbon dioxide the plants absorbed from the atmosphere through photosynthesis when they were growing.

During that same period, 282 PgC were released by combustion of fossil fuels, and 5.5 additional PgC were released to the atmosphere from cement manufacture.

Impacts of California's Five - Year (2012 - 2016) Drought on Hydroelectricity Generation — This comprehensive assessment of the costs to California of lost hydroelectricity during the five - year California drought (from October 2011 to the end of September 2016; the official California «water year» runs from October 1 to September 30) reveals an increase in electricity costs of approximately $ 2.45 billion, as well as a 10 percent increase in the release of carbon dioxide from California power plants due to the additional combustion of fossil fuels for electricity generation.

In the context of global climate change, they consist of radiatively important greenhouse gases (e.g., the release of carbon dioxide during fuel combustion).

«It is widely assumed that biomass combustion would be inherently «carbon neutral» because it only releases carbon taken from the atmosphere during plant growth.

In contrast, petroleum diesel releases roughly 85 percent of its greenhouse gas emissions during combustion in a vehicle's engine, the final use stage.

Fires end up contributing to warming by releasing carbon dioxide during combustion.

To understand the full extent of the environmental implications, it is important to consider the emissions released over the full life cycle and not just during fuel combustion.

The reference to «clean coal» was somewhat unclear in this context, because clean coal refers to attempts to recapture carbon released when coal is burnt or to otherwise reduce coal pollution during the combustion process.

Two statements during the presentation drew my interest: 1) geographical regions of high net release of CO2 were claimed in the talk to be regions with very little combustion of fossil fuels, and 2) increasing rainfall combined with increasing temperatures were suggested to increase decomposition rates of organic matter in the soil.

However, less of these other pollutants are released into the atmosphere during modern fossil fuel combustion.

Coal combustion releases the greenhouse gases carbon dioxide (CO2) and nitrous oxide (N2O) during combustion.

Old stoves and fireplaces are inefficient; if you're going to be burning wood to keep warm during the winter, the green thing to do is to make sure that as much of the heat that is produced by combustion is released into your home and isn't going out the chimney.

Additional carbon is released from the combustion of natural gas during oil recovery from the extracted bitumen.»

During the past 500 years or so, human activities have released mercury from its relatively stable and water - insoluble form (cinnabar) in rocks and soil through mining, fossil fuel combustion, and other activities, and so have increased the portion of mercury that is actively cycling through the atmosphere, surface waters, plants, and animals as it changes chemical and physical form.