Floating structure

Abstract

Provided is a floating structure including an upstream flow passage to pass seawater entering through a seawater inlet, a downstream flow passage to pass seawater from the upstream flow passage to guide the seawater to a seawater outlet, a connecting flow passage connecting the upstream flow passage and the downstream flow passage, and a heat exchanger provided in the connecting flow passage, the heat exchanger cooling down a heat source of the plant facility using seawater. The heat exchanger is placed above an inlet position where seawater enters the connecting flow passage from the upstream flow passage and below an outlet position where seawater exits the connecting flow passage into the downstream flow passage.

1 . A floating structure that can carry a plant facility, the floating structure comprising:
 a seawater inlet provided on an outer circumferential surface of the floating structure below a water line;   a seawater outlet provided on the outer circumferential surface of the floating structure below the waterline;   an upstream flow passage to pass seawater entering through the seawater inlet;   a downstream flow passage to pass seawater from the upstream flow passage and guide the seawater to the seawater outlet;   a connecting flow passage connecting the upstream flow passage and the downstream flow passage; and   a heat exchanger provided in the connecting flow passage, the heat exchanger cooling down a heat source of the plant facility using seawater.   wherein the heat exchanger is placed above an inlet position where seawater enters the connecting flow passage from the upstream flow passage and below an outlet position where seawater exits the connecting flow passage into the downstream flow passage.   
     
     
         2 . The floating structure according to  claim 1 , wherein the seawater inlet is positioned lower than the seawater outlet. 
     
     
         3 . The floating structure according to  claim 1 , wherein
 the floating structure has a cuboidal shape whose vertical length is shorter than lengths in other directions, and   the seawater inlet and the seawater outlet are provided on opposing sides, not on adjacent sides.   
     
     
         4 . The floating structure according to  claim 1 , wherein
 the floating structure has a cuboidal shape whose vertical length is shorter than lengths in other directions, and   the seawater inlet and the seawater outlet are provided on the same side.   
     
     
         5 . The floating structure according to  claim 1 , wherein
 the floating structure has a cuboidal shape whose vertical length is shorter than lengths in other directions,   the seawater inlet is provided on an underside of the floating structure, and   the seawater outlet is provided on any one side of the floating structure.   
     
     
         6 . The floating structure according to  claim 1 , wherein the heat exchanger includes a pipe of a cooling water system that circulates cooling water cooling down the heat source of the plant facility, and exchanges heat between the cooling water circulating in the cooling water system and seawater. 
     
     
         7 . A floating structure that can carry a plant facility, the floating structure comprising:
 a seawater inlet provided on an outer circumferential surface of the floating structure below a waterline;   a seawater outlet provided on the outer circumferential surface of the floating structure below the waterline;   an upstream flow passage to pass seawater entering through the seawater inlet;   a downstream flow passage to pass seawater from the upstream flow passage and guide the sea water to the sea water outlet;   a connecting flow passage connecting the upstream flow passage and the downstream flow passage; and   a heat exchanger provided in the connecting flow passage, the heat exchanger heating a cold source of the plant facility using seawater,   wherein the heat exchanger is placed below an inlet position where seawater enters the connecting flow passage from the upstream flow passage and above an outlet position where seawater exits the connecting flow passage into the downstream flow passage.   
     
     
         8 . The floating structure according to  claim 7 , wherein
 the floating structure can carry a regasification plant facility for liquefied gas, and   the heat exchanger gasifies the liquefied gas by heating the liquefied gas using sea water.