Abstract
Τhe ventilation in the ship engine rooms is an essential issue concerning finest performance of engines and diesel generators as well as electric motors. The present study has aimed at the analysis of temperature distribution inside the ship main engine room. In the same way, attempts have been made to identify those points with considerable thermal concentration in main engine room space, so that proper ventilation systems could be engineered and utilized and favorable thermal conditions could be realized. The CFD approach has been utilized in order to analyze impact of the designed ventilation system on the temperature distribution pattern. The Inlet layout and area have been analyzed under a variety of scenarios in order to decrease the average temperature and eliminate the heat concentrations in various points of the engine room. The temperature distribution and location and area of ventilation air inlet have been studied in different modes resulted in temperature distribution pattern, heat concentration outline and average volumetric temperature level in each mode. The results indicated that considerable circulating air volume is required compared to those levels suggested by common practices, calculations and standards in order to eliminate the heat concentration.
Highlights
Main and auxiliary engine rooms are of the main areas in a military floating ship containing lots of equipment, machineries, electrical gears and major engines and require proper ventilation under various severe weather conditions
Objective of the present study is to investigate the temperature distribution in the engine room; attempts have been made here to identify points with high level of heat concentration so that appropriate ventilation systems could be designed in order to realize a proper temperature condition
ANALYSIS AND CONCLUSION Positioning the inlets on the diesel engine leads to heat concentration around the generator in the single inlet cases while considering position of the outlet vent, input air is not circulated properly
Summary
Main and auxiliary engine rooms are of the main areas in a military floating ship containing lots of equipment, machineries, electrical gears and major engines and require proper ventilation under various severe weather conditions. The experimental data were integrated to CFD model for a thermal analysis under various applications They made use of CFD approach for modeling of the Ventilation system in a marine ship under operation in order to monitor the systems performance improvement (under severe weather conditions) that had the potential of higher efficiency of its engines and generators. The study analyzed and simulated the flow and temperature patterns in the engine room and resulted in an optimum design for the ventilation system. Objective of the present study is to investigate the temperature distribution in the engine room; attempts have been made here to identify points with high level of heat concentration so that appropriate ventilation systems could be designed in order to realize a proper temperature condition. The CFD approach is utilized in the present study to investigate the impact of ventilation system design on the temperature distribution pattern
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