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Metrology and availability of thermophysical property data for liquefied natural gas. Final report

Technical Report ·
OSTI ID:5871652
The increasing international trade in liquefied natural gas (LNG) and the rising price of LNG has placed ever increasing importance on reducing the inaccuracies associated with the transfer of ownership (custody transfer) of this important energy commodity. This paper summarizes the available sources of accurate and wide-range data for the thermophysical properties of LNG and its constituents. The constituents include the lower alkanes, methane through butanes, as well as nitrogen, carbon dioxide and helium. Special emphasis is placed on accurate predictive techniques for properties, especially density, of LNG and its constituents. Part II of the paper discusses the methods used to determine, in the field, static volume in tanks, static and dynamic density and heating value. The uncertainties associated with each measurement are discussed in the context of the total custody transfer measurement process.
Research Organization:
National Bureau of Standards, Washington, DC (USA)
OSTI ID:
5871652
Report Number(s):
PB-83-235804
Country of Publication:
United States
Language:
English