Scientists at Lawrence Livermore National Laboratory study potential of drag-reducing devices on semi-trucks to conserve billions of gallons, save tens of billions of dollars and spare tens of millions of tons of CO2
Each year, the more than 2 million tractor-trailer trucks that cruise America’s highways consume about 36 billion gallons of diesel fuel, representing more than 10 percent of the nation’s entire petroleum use. That fuel consumption could be reduced by billions of gallons a year through the use of drag-reducing devices on trucks, according to studies by researchers at Lawrence Livermore National Laboratory.
The findings will be described today in a talk at the American Physical Society’s Division of Fluid Dynamics (DFD) meeting in San Francisco, Calif. A press briefing featuring this and several other talks will be streamed live over the Web from the conference at 1:00 p.m. PST on Monday, Nov. 24 in room Foothill F of the San Francisco Marriott Marquis. For more information, email [email protected]
Fluid dynamicists Kambiz Salari and Jason Ortega ran aerodynamic tests on a detailed 1/8 scale model of a semi-truck in the wind tunnel facilities at NASA’s Ames Research Center at Moffett Federal Airfield in California. The truck was tested in various configurations. In some, it was outfitted with trailer skirts, which are panels affixed along the lower side edges of a trailer that reduce drag resulting from airflow interacting with wheels and other structures under the body of the trailer; in others, a boat tail fairing, a device affixed to the back of the trailer that decreases drag by reducing the trailer wake size, was added. In still other tests, the truck was rigged with both of the drag-reducing devices (or with neither one).
Salari and Ortega found that adding both of the devices — which are currently used in combination on about three to four percent of the nation’s semi-trucks — reduced the aerodynamic drag by as much as 25 percent, which represents about a 13 percent decrease in fuel consumption. “Even a minor improvement in a truck’s fuel economy has a significant impact on its yearly fuel consumption,” Salari said. “For example, 19 percent improvement in fuel economy, which we can achieve, translates to 6.5 billion gallons of diesel fuel saved per year and 66 million fewer tons of carbon dioxide emission into the atmosphere. For diesel fuel costing $3.96 per gallon, the savings is about $26 billion.”
The Latest on: Drag-reducing devices
via Google News
The Latest on: Drag-reducing devices
- New ‘drag’ device promises to deorbit satellites before they become space junkon December 1, 2021 at 6:55 am
Satellites, including Musk’s Starlink constellation providing high-speed internet to the world, are required to deorbit themselves within 25 years so they don’t create space j ...
- Scottsdale Golf have GREAT Christmas gifts for your favourite golfer!on November 30, 2021 at 4:08 am
Christmas is fast approaching and as we all scramble around looking for gifts for our loved ones, golf is always a safe haven if you have an avid player in your family. Golf has a wide range of ...
- Wall St mixed on tech drag, US to release oil from reserves: ASX to open flaton November 23, 2021 at 3:51 am
US to tap into oil reserves to lower prices President Biden ordered the release of 50 million barrels of reserves in a bid to reduce energy and gas prices ... ASX 200 lifted by miners on tech drag ...
- Ferrari Daytona SP3on November 22, 2021 at 1:46 am
Following the Monza SP1 and SP2 in the Ferrari Icona series, the Daytona SP3 limited edition model pays homage to the sports prototypes of the 1960s and the victory at the 1967 Daytona 24H. The ...
- You Really Need to Set Up Shortcuts on Your Macon November 17, 2021 at 4:29 pm
aren’t synced across devices. All of your Automator workflows are saved on your Mac as .workflow files. Locate the workflow that you wish to import and just drag it to the Shortcuts app.
- 3 Tips to Integrate EHR with Clinical Communication and Collaboration Toolson November 17, 2021 at 8:38 am
From understanding your healthcare system’s needs to improving patient care, here are considerations for your clinical and IT teams.
- Using Low-code to Deliver Network Automationon November 12, 2021 at 11:18 am
and deploy automation in real-time using an intuitive drag-and-drop interface. Low-code tools put network automation in your hands, which can help you deliver automation faster and reduce costs ...
- STARLINK | #Starlink is a division of #SpaceX.on November 11, 2021 at 4:46 pm
ASTRONOMY DISCUSSION WITH NATIONAL ACADEMY OF SCIENCES SpaceX is launching Starlink to provide high-speed, low-latency broadband connectivity across the globe, including to locations where internet ...
- Huawei MateBook 14s reviewon November 11, 2021 at 3:19 am
The screen has a slightly matte coating that helps to reduce glare in bright ... the same peripherals, even drag files, folders and windows across between the devices. The biggest caveat to ...
- Neutral particles a drag on disruptive plasma blobson November 8, 2021 at 2:25 pm
Using strong magnetic fields to confine hot plasmas within a donut-shaped device called a tokamak ... modeling particles as charged rings and reducing the complexity of the problem.
via Bing News