Latest Propellants Stories

AMSTERDAM, Nov. 30, 2010 /PRNewswire/ -- Helping the shipping industry find increasingly sustainable solutions for refrigerated transport, Carrier Transicold presented the world's first natural refrigerant technology for container refrigeration today at Intermodal Europe 2010. Carrier's newest container refrigeration unit design, to be known as NaturaLINE(TM), incorporates this breakthrough technology. Carrier Transicold is a unit of Carrier Corp., the world's leader in high technology...

Variations in atmosphere carbon dioxide around 40 million years ago were tightly coupled to changes in global temperature, according to new findings published in the journal Science. The study was led by scientists at Utrecht University, working with colleagues at the NIOZ Royal Netherlands Institute for Sea Research and the University of Southampton."Understanding the relationship between the Earth's climate and atmospheric carbon dioxide in the geological past can provide insight into...

An unusual substance known as "dry water," which resembles powdered sugar, could provide a new way to absorb and store carbon dioxide, the major greenhouse gas that contributes to global warming, scientists reported at the 240th National Meeting of the American Chemical Society. The powder shows bright promise for a number of other uses, they said. It may, for instance, be a greener, more energy-efficient way of jump-starting the chemical reactions used to make hundreds of consumer...

WARRENDALE, Pa., Sept. 10 /PRNewswire-USNewswire/ -- SAE International announced that it has updated the equipment standards covering the recovery and onsite recycling of R-134a refrigerant used to service mobile air conditioning systems. In December 2009, SAE International's J2788 HFC-134a (R-134a) Recovery/Recycling Equipment and Recovery/Recycling/Recharging for Mobile Air-Conditioning Systems was published. J2788 superseded the requirements of SAE J2210 HFC-134a (R-134a)...

Research by scientists at Queen Mary, University of London has found that a predicted rise in global temperature of 4°C by 2100 could lead to a 13% reduction in ecosystems' ability to absorb carbon dioxide (CO2) from the atmosphere.Writing in Philosophical Transactions of the Royal Society B, the scientists describe a new model to predict how the carbon storage capacity of ecosystems would respond to future global warming. They tested their predictions against data collected from...

LANSDALE, Pa., June 2 /PRNewswire-USNewswire/ -- Few motorists know that the air conditioner in their vehicle has been a focus of worldwide environmental concerns and international efforts to address those concerns for several decades, or that they can play a major role in protecting the environment through their choices. The same refrigerant, CFC-12 or R-12, was used in mobile air conditioning for more than 50 years, through the mid-'90s. Inexpensive and thought to be environmentally...

Spanish researchers have measured CO2 levels for the past three years in the troposphere (lower atmosphere) over a sparsely inhabited rural area near Valladolid. The results, which are the first of their kind in the Iberian Peninsula, show that the levels rose "significantly" between 2002 and 2005.Over recent years, physicists and meteorologists have been trying to find out about carbon dioxide (CO2) levels, and how these have evolved in the troposphere over various urban and rural...

Tool for estimating size of greenhouse gas-trapping reservoirs to be presentedA team of researchers at the Massachusetts Institute of Technology has developed a new modeling methodology for determining the capacity and assessing the risks of leakage of potential underground carbon-dioxide reservoirs.One strategy for mitigating greenhouse gases is to inject compressed carbon dioxide into natural aquifers made of permeable rock soaked with brackish salt water. Carbon dioxide is less viscous and...

You would have to go back at least 15 million years to find carbon dioxide levels on Earth as high as they are today, a UCLA scientist and colleagues reported Oct. 8 in the online edition of the journal Science."The last time carbon dioxide levels were apparently as high as they are today "” and were sustained at those levels "” global temperatures were 5 to 10 degrees Fahrenheit higher than they are today, the sea level was approximately 75 to 120 feet higher than today, there was...

After 12 years, an experiment focused on forest growth and climate change comes to an end, and researchers at Oak Ridge National Laboratory are eager to collect and analyze data to see if their predictions match results.With the Department of Energy-sponsored free air carbon dioxide enrichment experiment, known as FACE, three plots of sweetgum trees were the control sites and two plots of sweetgums were exposed to increased carbon dioxide levels in the atmosphere at 550 parts per million,...