The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Dec. 27, 2021
Hanwha Ocean Co., Ltd., Geoje-Si, KR;
Joon Chae Lee, Seoul, KR;
Won Jae Choi, Siheung-si, KR;
Seung Chul Lee, Seoul, KR;
Jin Ho Choi, Incheon, KR;
Hye Min Jung, Geoje-si, KR;
Zie Hyun Kim, Yongin-si, KR;
Hyun Jun Shin, Seoul, KR;
Hanwha Ocean Co., Ltd., Geoje-Si, KR;
Abstract
A refrigerant charging system includes: a reliquefaction system reliquefying boil-off gas generated in a liquefied gas storage tank by compressing the boil-off gas and subjecting the compressed boil-off gas to heat exchange with refrigerant supplied to a heat exchanger while circulating along a refrigerant circulation line; a buffer tank storing utility Nto be supplied to the ship; a booster compressor receiving the utility Nfrom the buffer tank, compressing the received N, and supplying the compressed Nto the refrigerant circulation line; and a first load-up line along which the Nis supplied from the buffer tank to the refrigerant circulation line without passing through the booster compressor. Upon initial charging in a non-operation state of the reliquefaction system, the refrigerant circulation line is charged with refrigerant by supplying the Nfrom by a pressure differential between the refrigerant circulation line and the buffer tank.