Construction of Fireproof Design Simulation Tool with Water Discharge Equipment

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This research (1)investigates the thermal characteristic of structural member when exposing to the fire, (2)affects water spray on reducing temperature within the structural member by small and middle scale experiments, and (3)develops the simulation code to design the fire protection system with and without water spray.Small scale experiment with a radiation panel was conducted under spraying water to measure the total heat flux and temperature rise within the member quantitatively. The result showed that water spray system was effective to protect the structural member, but it could be important factor that the water spray keeps enough thick of water film on the member.Middle scale experiment with a radiation panel was examine to see the minimum thickness of water film for effective fire protection on the structural member. Film disappearance by water temperature, surface temperature of the member, heating condition, and viscosity change due to the water temperature were correlated.A simple simulation code of incident heat flux on the member and temperature history within the member was developed for the case with and without spraying the water. This code is very simple and timely effective for general use PC, and calculates heat flux blockage by water spray due to reduction of convective and radiative heat transfer. Temperature within the structural member with water spray was calculated by combining widely used heat transfer code and data obtained by small and middle scale experiments.