SAMPE Journal - July/August 2013 - (Page 28)
tech TiDbiTs
Compressed Natural Gas (CNG) Tank Technology
Dr. Scott W. Beckwith, SAMPE International Technical Director
and President, BTG Composites Inc.
Taylorsville, UT
Compressed natural gas (CNG) pressure vessel (tank) technology has been around for a number of years.
Numerous countries utilize CNG tanks for fleet, transit and personal automobiles and have developed significant in-country infrastructure for refueling. There are a variety of CNG tanks on the market, with the
various types defined by “type” numbering that depends upon the liner material and composite overwrap
used in the construction of the tanks. Table 1 shows the various CNG types currently on the market around
the world.
Table 1. CNG tank types by designation and critical construction materials.
Table 1 does not indicate the resin system used but the thermoset family has typically been seen as the
primary application matrix although there have been successful thermoplastic resins used in several applications. For the thermoset CNG tanks, epoxy-based resins drive the majority of the marketplace currently. As the tank designs progress from the all-metal liner (Type I) to the variety of metal/plastic liner and
Table 2. CNG tank type material safety factors required and gas/tank weight ranges.
28
SAMPE Journal, Volume 49, No. 4, July/August 2013
Table of Contents for the Digital Edition of SAMPE Journal - July/August 2013
SAMPE Journal - July/August 2013
Contents
President’s Message
Technical Director’s Corner
Corporate Partners
Welcome SAMPE’s Newest Members
SAMPE Proceedings
SAMPE Student Chapter Funding Awards 2012-2013
SAMPE Tech 2013|Wichita, KS
Europe News & Views
SAMPE Europe’s SETEC 13 Wuppertal, Germany
Tech Tidbits
The SAMPE Foundation
SAMPE Tech 2014|Call for Papers
SAMPE Journal Editorial Calender
SAMPE 2013 Long Beach-A Review
SAMPE 2013 Photo Gallery
Industry News
Perspectives
Advertiser’s Index
Resource Center
Membership Application
SAMPE Proceedings Order Form
Industry Events Calendar
Chapter Contacts
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