Application of plate heat exchanger in ship industry
1.?Cooling system, the central cooling system is divided into high temperature hot fresh water and low temperature warm fresh water closed system. The former is used to cool the main engine, and the latter is used to cool hot fresh water and various coolers. The heated fresh water is cooled by an open seawater system in a central cooler. Therefore, only one cooler using seawater as cooling fluid is used, which simplifies the arrangement of seawater piping. In the central cooling system, the seawater and freshwater pipelines are separated, the freshwater pipelines are less corroded and clean, the management cost is low, and the system operation reliability is strong; the high-temperature and low-temperature freshwater channels respectively cool different ship equipment, which makes the system adaptable and improves equipment work. performance.
2.?Propulsion system, including operating subsystems such as lubricating oil system, jacket water system (open and closed) and fuel system. All of these systems are heated when energy is generated and used for cooling using heat exchangers within the system to control the temperature. Through heat transfer, heat is transferred from the engine coolant to the ship's circulating water. In this way, the engine coolant can be kept in an appropriate temperature range, avoiding damage to the engine caused by overheating and overcooling, and can also increase the working efficiency of the engine.
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3. Fresh water system, in order to produce fresh water, seawater condenser and jacketed evaporator are used, both of which are types of heat exchangers. In the freshwater generator, the main function of the marine heat exchanger is to convert high temperature and high pressure seawater The low-temperature and low-pressure fresh water conducts heat transfer, so that the salt in the seawater can be condensed and separated, thereby realizing seawater desalination. In addition, heat recovery can also be realized, and the waste heat generated can be reused to increase energy utilization efficiency. Therefore, the application of marine heat exchangers in fresh water generators plays an important role in ensuring the safety of life at sea and navigation.
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