Abstract
A method of experimental study of heat transfer processes between industrial constructions during a fire was developed. Types of equipment necessary for the conduction of the experimental studies were determined. A new type of specimen to be used as the one to be studied when conducting experimental studies was developed. Installation sites of thermocouples and heat flux detector on the specimen under study are shown as layout. Installation sites of the specimens under study relative to heat radiation source were substantiated experimentally. Succession of the conduction of the experimental studies of heat transfer processes between industrial constructions during a fire was developed which consists of the following procedures: production of specimens for the studies, measurement and recording on ambient conditions, measuring of temperature and heat flux on the surface of the specimen under study, and filling 55B test fire with water and diesel fuel. It was established that average temperatures and heat flux density values as well as flame geometry should be measured when performing experimental studies.
Highlights
Specific features of fires in industrial constructions, unlike buildings, lies in open burning without any flame restriction with non-combustible building constructions having some fire resistance class
Equipment used for the conduction of the full-scale fire experimental studies includes the following: class B test fire, specimen for studies, measuring instruments and equipment for photo and video shooting. 55B is used as test fire when performing studies in an industrial construction [13], this test fire represents metal pan (1.480 ± 0.5) mm in diameter, height of its side board equals to (150 ± 5) mm and thickness of the latter is (2.5 ± 0.5) mm, 18 l of water and 37 l of diesel fuel are poured into it
When performing experimental studies of the heat transfer processes between industrial constructions thermocouples installation at the specimens under study shall be taken as 1, 2 and 3 m; this case corresponds to maximum intensity of heat irradiation of the specimens under study caused by 55B test fire
Summary
Specific features of fires in industrial constructions, unlike buildings, lies in open burning without any flame restriction with non-combustible building constructions having some fire resistance class This stipulates for more powerful effect of heat irradiation caused by fire due to larger area of flame on adjacent buildings and constructions. Full-scale fire tests should be conducted to study the heat transfer processes between adjacent industrial constructions (one of which is burning and another one is being irradiated) in order to implement calculation method of the determination of fire breaks between manufacturing and industrial designation constructions. Essence of the method lies in the determination of heat flux density q2 (kW/m2) and temperature T2 (°C) at the surface of the object being irradiated (2) by flame (1) produced at the burning object (see Figure 1)
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