THE EFFECT OF DEFLECTOR DISTANCE ON EXTRA LOW PRESSURE FIRE SPRINKLER NOZZLE PERFORMANCE

NUR ATIKAH, ABDUL RAZAK (2019) THE EFFECT OF DEFLECTOR DISTANCE ON EXTRA LOW PRESSURE FIRE SPRINKLER NOZZLE PERFORMANCE. [Final Year Project Report] (Unpublished)

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Abstract

The fires cases in Malaysia have been increasing rapidly over the years. The number of fire cases involved residential building is significantly higher than other building types. Therefore, the aim of this project is to evaluate the effect of deflector distance to the performance of fire sprinkler nozzle under the operating pressure of less than 0.5 bar so that it can be used in residential area with minimum maintenance on the system. The fire sprinkler design and performance requirement on area of coverage was not met by all studied deflector distance. This sprinkler will be used in a building where pumping system is not preferred. The model of fire sprinkler nozzle was developed with Computer Aided Design (CAD) Software. The simulations of a sprinkler nozzle were performed by using Computational Fluid Dynamic (CFD) model. It was found that area of coverage was not met by all studied deflector distance. However, there are potential improvement for 30 mm, 40 mm and 50 mm deflector distance. The recommended future improvement is redesign deflector, increase orifice diameter, introduce external pressure tank and increase flow rate.

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