It’s a ‘Game-Changer,’ Firm Says, Due to ‘Simple Physics’
CNG Cylinders International says it’s got the world’s largest-diameter Type 3 cylinders – 23 inches – and is now citing proof that they fill far faster than competing Type IVs.
During a Powertech Labs study, CNGci says, both cylinder types were fast-filled to a final pressure of 4,175 psi, and weighed to determine their actual CNG content.
“At 250 psi starting pressure (10% fill condition) the difference was a staggering 37% greater fill for the Type III,” CNGci says. “This is simple physics: the heat dissipation of the aluminum liner is far superior to the plastic liner in a Type IV design.”
In terms of customer value, a Type III cylinder from CNGci adds 9.6 diesel gallon equivalents (or 58 miles at 6 mpg) of range per tank with fast fill at 4,175 psi. “Over the course of a year,” states CNGci, “that results in 28% less fuel stops, compared to a Type IV cylinder.”
Put another way, a truck equipped with three 400-liter tanks logging 125,000 miles per year (at 6 mpg) “will save 76 fuel stops each year.”
More Sizes Coming
“This result is a game-changer when it comes to a comparison of Type III versus Type IV,” CNGci president Siggy Rivalta said ina release. The difference is enough to change the CNG-vs-LNG equation, he says, predicting that the CNGci design “will become the industry standard moving forward.”
CNGci offers 23-inch diameter Type III cylinders with 300-liter (25.7 DGE with fast fill) and 400-liter (34.9 DGE with fast fill) volumes. A 463-liter (40.5 DGE) is coming “soon,” with 500 liters and more planned. All CNGci cylinders are manufactured in Oxnard, Calif.
Contact information is only available to premium subscribers. Click here to purchase a subscription.
Source: CNGci with Fleets & Fuels follow-up