Page 43 - WM E-Learning Handbook

Slide Topic Content Notes

LNG Is a Storage Method  Engines operate on natural gas,
Only regardless of the way fuel is
stored

 LNG onboard vehicle storage
tanks are very different

 LNG stored at low pressure (230
psi)

CNG/LNG Fuel Comparison

Slide Topic Content Notes
Properties of LNG and
Liquid-to-Vapor  LNG colder than -160°F
Transformation  Fully liquefied @ -260°F
 Heavier than air
Saturated LNG  Will pool on ground

 LNG warmer than -160°F
 Fully vaporized (now gaseous
vapor)
 Lighter than air
 Will rise when released
 Expands volume 600
times

 Approximately 90% of LNG
systems
 aka “conditioned”
 Warmed to approximately -
230°F, 100 psi

Technician Safety and Awareness Training for NGVs © 2018 NGVi All Rights Reserved Page 41