>
Raw Milk At The Crossroads… Again
Obama's Pentagon Developed The COVID Attack Plan, Warns Dr. Peter McCullough
NATO's Attempted Assassination Of Slovakian Leader Signals Total Desperation, Warns Jack Posobie
Renowned Oncologist Drops Bombshell: Ivermectin Cures Cancer
A Staggering 19x Energy Jump in Capacitors May Be the Beginning of the End for Batteries
Telegram Disabled My Account. Good Riddance
China's floating nuke plants up South China Sea ante
'Tungsten wall' leads to nuclear fusion breakthrough
Matt Taibbi Uncensored: Finance A 'Street Scam'
This Bonkers 656-Foot 'AirYacht' Concept Can Transport 40 Guests Around the World
DR. BRYAN ARDIS | How Much Nicotine Should You Use? How It Can Heal Parkinson's and More...
Elon Musk's Neuralink begins clinical trials in Phoenix
Scientists Are Making Jet Fuel from Landfill Gas Aiming to Launch Circular Economy
Ribbons were cut at the Supercritical Transformational Electric Power (STEP) pilot plant in Texas on October 27 as it was declared "mechanically complete" by project partners Southwest Research Institute (SwRI), GTI Energy, GE Vernova, and the U.S. Department of Energy.
The device in the image above is the world's first supercritical carbon dioxide turbine. Roughly the size of a desk, is a 10-megawatt turbine capable of powering around 10,000 homes. Ten megawatts is pretty small potatoes in the energy business, but to do it with a turbine this tiny? That could prove to be a revolutionary feat.
Carbon dioxide goes supercritical when the temperature and pressure are above about 31 °C (88 °F) and 74 bar (1,070 psi), respectively. At this point, it stops acting like a gas or a liquid, and instead starts acting something like a gas with the density of a liquid. Past this point, relatively small changes in temperature can cause significant changes in density.
Water can of course go supercritical too – it just takes a lot more energy, requiring a temperature and pressure over 373 °C (703 °F) and 220 bar (3,191 psi).
The properties of this supercritical CO2 fluid make it ideal for energy extraction in a closed-loop system, and back in 2016, General Electric announced it would start building a pilot plant to prove the idea in a commercially relevant installation, expecting to achieve 10 MW at an extraction efficiency of 50% – around 10% better than current steam turbines, which operate in the mid-40s – using a turbine about one-tenth the size.
Such a turbine could significantly reduce the capital cost of setting up any power generator reliant on heat and turbines; not only will the smaller turbines be cheaper, but they're so much more compact that you'll need less land for a given power plant. It'd also produce more power from a given heat source, and by default reduce the per-unit carbon emissions even of coal and gas-based generators.