Effect of Occupancy on Air Outlet Design Alternatives in Ship’s Crew Cabins

Khaled Senary, Amman Ali

Abstract
Accommodation spaces onboard ships are normally of small dimensions, which reduce the possibility of proper mixing between fresh and existing air. For ships with large crews, some cabins are occupied by four crew members, which increases heat loads in such spaces. For proper use of these cabins bunk beds are usually used, with the air trapped between lower and upper beds almost stagnant. On the other hand, the upper beds are usually very close to the ceiling which makes the situation even worse. Field measurements of air parameters inside a real ship crew cabin were considered and simulated using a well-known Computerized Fluid Dynamics (CFD) software to study the relationship between number of occupants and main design parameters. Results showed that thermal comfort can be reached through an optimal combination of main design parameters. Correlation between heat load and main design parameters would be taken into consideration for future feasibility study.