| 摘要 |
<p>The present disclosure relates to a subsea unit (1-2) comprising a pressure vessel (3) arranged to withstand ambient sea water pressure at sea ground of at least 50 bar, and to keep up an internal pressure that is closer to atmospheric pressure than sea water pressure at the sea ground; a first type of electric component (9); and a two-phase cooling system (5') arranged to cool the first type of electric component (9), which two-phase cooling system (5') comprises: a first cooling fluid (F-1), a first evaporator (E1) arranged within the pressure vessel (3), wherein the first evaporator (3) is arranged in thermal connection with the first type of electric component (9), a condenser (C) arranged outside the pressure vessel (3) to allow the condenser (C) to be in thermal connection with sea water, a vapour conduit (5-1) arranged to transfer first cooling fluid (F-1) from the first evaporator (E1) towards the condenser (C), and a liquid conduit (5-2) arranged to transfer first cooling fluid (F-1) from the condenser (C) towards the first evaporator (E1), wherein the first evaporator (El), the condenser (C), the vapour conduit (5-1) and the liquid conduit (5-2) form a closed loop for circulating the first cooling fluid (F-1) in the two-phase cooling system (5; 5'). A subsea power system comprising a subsea unit is also presented herein.</p> |
