PERFORMANCE OPTIMIZATION ANALYSIS FOR SHIP CENTRAL COOLING SYSTEM BASED ON VARIABLE FREQUENCY CONTROL

Jinyin Du∗ and Yanming Xu∗

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Keywords

Central cooling; centrifugal pump similarity theorem; frequency conversion; simulation; energy saving

Abstract

Taking the central cooling system of an 8000TEU container ship as the research object, the equivalent model is established according to the conditions of each subsystem on the ship, and the subsystems are integrated to form the model of the ship’s central cooling system. Matlab/Simulink is used as the simulation means to simulate the seawater variable flow, which compares the seawater flow saved under different loads and seawater temperature and speculates the percentage of energy saved by the pump according to the similarity theorem of centrifugal pump. The conclusion of this paper can be used as the reference for the design of the central cooling system of the ship in the future.

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