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ORNL study finds best current use of natural gas for cars is efficient production of electricity for EVs

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However, they also noted, high PTW efficiencies and the moderate fuel economies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. If CNG were to be eventually used in hybrids, the advantage of the electric generation/EV option shrinks. Their open access paper is published in the journal Energy.

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Electra raises $85M to advance Low-Temperature Iron process; electrochemical refining at 60?C

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Electra has raised $85 million to produce Low-Temperature Iron (LTI) from commercial and low-grade ores using zero-carbon intermittent electricity. By comparison, 69% of steel today is made at approximately 1,600 degrees Celsius (2,912 degrees Fahrenheit) using coal, emitting about two tons of carbon dioxide for every ton of steel produced.

Coal 360
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Sandia team puts power into local grid with supercritical CO2 closed-loop Brayton-cycle turbine

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Sandia National Laboratories researchers recently delivered electricity produced by a new power-generating system to the Sandia-Kirtland Air Force Base electrical grid. The system uses heated supercritical carbon dioxide instead of steam to generate electricity and is based on a closed-loop Brayton cycle.

Grid 396
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BMW provides an update on waste heat recovery projects; Turbosteamer and the Thermoelectric Generator

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The company says that some of the most promising projects are the Turbosteamer ( earlier post ); the Thermoelectric generator (TEG) ( earlier post ); engine encapsulation; and a waste heat exchanger for oil heating. Research project Turbosteamer: comparison of the heat exchanger generation 1 (top) and generation 2 (bottom).

Waste 376
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Swiss WTW study finds important role for alternative fuels as well as alt drivetrains in move to low-emissions vehicles

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WTW energy demand and GHG emissions for EV and PHEV drivetrains for various electricity sources; gasoline ICE vehicle is solid square, hybrid the hollow square. First, it considers the performance of both mature and novel hydrogen production processes, multiple electricity generation pathways and several alternative drivetrains.

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US Navy completes sea trial with ARA’s 100% drop-in renewable diesel fuel

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The renewable diesel fuel powered the Self Defense Test Ship’s General Electric LM-2500 gas-turbine engine and a Rolls Royce 501 K-17 gas-turbine generator. The Biofuel ISOCONVERSION Process comprises: ARA’s Catalytic Hydrothermolysis (CH) process for the conversion of plant oils into a high quality crude oil intermediate.

Renewable 150
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Life cycle study calculates Algenols algae-to-ethanol process can deliver 67% to 87% reduction in carbon footprint compared to gasoline

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A team from Algenol and Georgia Tech calculated the life cycle energy and greenhouse gas emissions for three different system scenarios for this proposed ethanol production process, using process simulations and thermodynamic calculations. solar energy conversion efficiency for average incident sunlight energy levels in the United States.

Carbon 246