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U.S. Department of Energy
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Powered mobile liquefied gas carriers

Patent ·
OSTI ID:6673278
Boiloff gas from LNG cargo tanks can be used more economically and efficiently for tanker propulsion by dividing the total boiloff into 2 portions, recompressing and liquefying one, and using the energy generated in the 1st-part operation to heat the 2nd portion. This arrangement allows better utilization of energy and use of smaller heat exchangers and simpler, less expensive compressors for the part of flow to be returned to storage. The 2-part flow ratio is controlled by a 3-way valve according to the condensation pressure.
Assignee:
US 3,864,918
Patent Number(s):
US 3864918
OSTI ID:
6673278
Country of Publication:
United States
Language:
English