Airflow patterns and draught risk in a ship cabin

Abstract

The purpose of this study was to investigate the airflow patterns and draught risk in a ship cabin. The experimental condition was created in a mock-up cabin environment. The total heat load was 33 W/m2 and the indoor temperature target was set at 22°C. The cabin was cooled with a fan coil unit (FCU) connected to a fresh supply air duct. The total supply air rate consisted of cooled fresh outdoor air (21 L/s) and cooled recirculated indoor air from the FCU (30 L/s). The airflow patterns were visualized with smoke and quantified with physical measurements, and the draught risk was calculated. Based on the measurements, it appears that directing the cool supply air jet to an adjacent wall is an effective way to avoid high air speeds in the most important areas from the occupational point-of-view in the studied cabin and under these conditions.