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Study finds total greenhouse gas footprint of blue hydrogen “quite high” due to fugitive methane

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The open access paper by Cornell’s Robert Howarth and Stanford’s Mark Jacobson is published in the journal Energy Science and Engineering. Energy Sci Eng. For our default assumptions (3.5% —Howarth and Jacobson. Carbon dioxide equivalent emissions of fugitive, unburned methane are shown in red. The methane leakage rate is 3.5%.

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Fraunhofer researchers developing ammonia-based systems for mobile energy in infrastructure, transportation and industry

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Researchers at the Fraunhofer Institute for Microengineering and Microsystems IMM are developing ammonia-based systems for a mobile, decentralized energy supply in the infrastructure, transportation and industry sectors. However, it is also a high-quality energy carrier, particularly as a storage medium for hydrogen.

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BMW provides an update on waste heat recovery projects; Turbosteamer and the Thermoelectric Generator

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with technologies such as direct fuel injection, variable valve timing, exhaust-driven turbochargers, brake energy regeneration and Auto Start Stop function—about 60% of the generated energy is still lost, half of it being exhaust heat, with the remaining half as heat absorbed by the engine cooling system.

Waste 376
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SAE Publishes Revised J1711 Standard to Measure Exhaust Emissions and Fuel Economy of Hybrids and Plug-in Hybrids

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J1711 defines an HEV for the purposed of the procedure as a road vehicle that can draw propulsion energy from both of the following sources of stored energy: A consumable fuel. A rechargeable energy storage system (RESS) that is recharged by the on-board hybrid propulsion system, an external electric energy source, or both.

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DOE to award up to $24M to advance direct air carbon capture technology

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The US Department of Energy (DOE) will award up to $24 million for research into technology that captures carbon emissions directly from the air, replicating the way plants and trees absorb CO 2. ( building HVAC exhaust) and from natural fluids (e.g., building HVAC exhaust) and from natural fluids (e.g., DE-FOA-0002481 ).

Carbon 360
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Study finds biodiesel from algae, yeast and bacteria can displace both petroleum diesel and soybean biodiesel

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The researchers, who reported their results in a paper published in the ACS journal Energy & Fuels , examined the properties, engine performance, and emissions for biodiesel produced from the microalgae Chaetoceros gracilis ; the yeast Cryptococcus curvatus ; and the bacterium Rhodococcus opacus. Energy & Fuels doi: 10.1021/ef3012382.

Diesel 316
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Polystyrene-Biodiesel Blends for Energy Recovery from Waste Plastics

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Comparisons of NO x , CO, soot, and engine brake power using different PS blends with the factory-set injection timings. Researchers at Iowa State University are proposing dissolving waste polystyrene (PS) in biodiesel for use as a diesel engine fuel as a mechanism for energy recovery from the waste plastic. Credit: ACS. Credit: ACS.

Waste 207