US 12,078,128 B2
System and method for supplying fuel for ship
Seon Jin Kim, Siheung-si (KR); Seung Chul Lee, Seoul (KR); Hye Min Jung, Seoul (KR); and Jin Ho Choi, Incheon (KR)
Assigned to Hanwha Ocean Co., Ltd., Geoje-Si (KR)
Appl. No. 17/754,366
Filed by DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD., Geoje-Si (KR)
PCT Filed Nov. 15, 2019, PCT No. PCT/KR2019/015711
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/095948, PCT Pub. Date May 20, 2021.
Prior Publication US 2022/0333555 A1, Oct. 20, 2022
Int. Cl. F02M 21/02 (2006.01); B63B 25/14 (2006.01); B63H 21/38 (2006.01); F02M 31/16 (2006.01); F02M 31/20 (2006.01); F17C 5/02 (2006.01); F17C 7/02 (2006.01)
CPC F02M 21/0221 (2013.01) [B63B 25/14 (2013.01); B63H 21/38 (2013.01); F02M 21/0245 (2013.01); F02M 31/16 (2013.01); F02M 31/20 (2013.01); F17C 5/02 (2013.01); F17C 7/02 (2013.01); F17C 2221/035 (2013.01); F17C 2227/0135 (2013.01); F17C 2227/0306 (2013.01); F17C 2227/0339 (2013.01); F17C 2265/066 (2013.01); F17C 2270/0105 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A fuel supply method for ships, comprising:
supplying an excess amount of liquefied gas as fuel to an incompressible fluid-fueled engine;
cooling unconsumed fuel discharged from the engine through heat exchange with liquefied gas discharged from a storage tank in a heat exchanger;
returning the unconsumed fuel discharged from the engine and having been cooled through heat exchange in the cooling step to the storage tank; and
supplying the liquefied gas discharged from the storage tank and having been used as refrigerant for heat exchange in the cooling step to the engine,
whereby cavitation in the engine is prevented through supply of the excess amount of liquefied gas sufficient to accommodate variation in load of the engine to the engine,
wherein the liquefied gas discharged from the storage tank is pumped by a pump at upstream of the heat exchanger, and
wherein the unconsumed fuel cooled by the heat exchanger is decompressed to an internal pressure of the storage tank by a decompression unit disposed between the heat exchanger and the storage tank and sent to the storage tank.