Ship Seawater Circulation System for Space and Thermal Management
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Solution Overview
Problem
The existing seawater circulation systems for ships require multiple sea chests and discharge pipes, leading to increased space consumption and high installation costs, as they need separate seawater supplies for heat generation devices and scrubbers, which consume large amounts of seawater and necessitate additional infrastructure.
Innovation Solution
A seawater circulation system that recirculates seawater used for cooling heat generation devices to also remove sulfur oxide in scrubbers, utilizing a supply pipe unit with a second pump and a separation unit to manage seawater flow and contaminants, allowing reuse of seawater without additional sea chests or discharge pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If separate sea chests and discharge pipes are installed for heat generation devices and scrubbers, then sufficient seawater supply is ensured for both systems, but the proportion of sea chest increases and available space in the ship decreases
Solution Approach 1:
The patent makes the heat generation devices serve a dual function: they not only cool the engine but also provide cooled seawater to the scrubber for sulfur oxide removal. This multi-functionality eliminates the need for separate sea chests and discharge pipes for the scrubber, thereby preserving ship space while ensuring sufficient seawater supply for both cooling and desulfurization purposes
Solution Approach 2:
The patent merges the seawater supply systems for heat generation devices and scrubbers into a single integrated system. By combining the discharge pipe of the heat generation device with the seawater supply line of the scrubber, the system reduces the number of separate sea chests and discharge pipes required, thus increasing available space in the ship while maintaining adequate seawater flow for both functions
2Quantity of substance
If separate sea chests and discharge pipes are installed for heat generation devices and scrubbers, then sufficient seawater supply is ensured for both systems, but installation cost increases due to requirement of dry dock or diver
Solution Approach 1:
The patent makes the heat generation devices serve a dual function: they not only cool the engine but also provide cooled seawater to the scrubber for sulfur oxide removal. This multi-functionality eliminates the need for separate sea chests and discharge pipes for the scrubber, thereby preserving ship space while ensuring sufficient seawater supply for both cooling and desulfurization purposes
Solution Approach 2:
The patent merges the seawater supply systems for heat generation devices and scrubbers into a single integrated system. By combining the discharge pipe of the heat generation device with the seawater supply line of the scrubber, the system reduces the number of separate sea chests and discharge pipes required, thus increasing available space in the ship while maintaining adequate seawater flow for both functions
3Loss of energy
If seawater is discharged after use, then cooling function is fulfilled, but marine ecosystem may be damaged by high temperature discharge
Solution Approach 1:
The patent implements continuous circulation of seawater through the heat generation device and scrubber system, maintaining a steady flow that prevents excessive temperature buildup. The cooled seawater from the heat generation device continuously supplies the scrubber, and the mixed discharge maintains a more moderate temperature, reducing thermal shock to marine ecosystems while sustaining effective cooling and desulfurization operations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system enables efficient reuse of seawater for both cooling and sulfur oxide removal, reducing the need for additional sea chests and minimizing space usage while lowering seawater temperature discharge to protect marine ecosystems.
Implementation Method 1
supplying seawater for cooling a heat generation body of a ship
Implementation Method 2
seawater is injected through a plurality of nozzles to remove sulfur oxide contained in the exhaust gas through adsorption between the seawater and sulfur oxide
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to a seawater circulation system for a ship and, more particularly, to a seawater circulation system for a ship that supplies seawater to a heating body and a scrubber of the ship. One embodiment of the present invention provides a seawater circulation system for a ship, comprising: a sea chest capable of pumping seawater from the sea; a cooling unit which is connected to the sea chest for receiving seawater from the sea chest and, at a portion thereof, connected to the heating body to lower the temperature of the heating body through heat exchange; a scrubber unit for treating an exhaust gas generated in the ship; a first exhaust pipe unit for discharging seawater discharged from the cooling unit to the outside; a supply pipe unit which is connected to the first discharge pipe unit and the scrubber unit and supplies a part or all of the seawater discharged from the cooling unit to the scrubber unit; and a second exhaust pipe unit which is connected to the scrubber unit and the first exhaust pipe unit and supplies seawater discharged from the scrubber unit to the first discharge pipe unit.