USE OF THE HEAT FLOW RECEIVER FOA 013-01 WHEN ASSESSING THE DANGER OF THE SPREAD OF FIRE TO ADJACENT OBJECTS


  • V.V. Nizhnyk The Ukrainian Civil Protection Research Institute
  • S.V. Pozdieiev The Ukrainian Civil Protection Research Institute
  • Y.L. Feshchuk The Ukrainian Civil Protection Research Institute
Keywords: heat flux density, heat flux receiver, fire distances.

Abstract

The efficiency of using a heat flux receiver in assessing the danger of a fire spreading to adjacent construction objects is studied, as a basis for developing a program and methodology for experimental studies of heat transfer processes between a fire source and elements of adjacent objects. The object of study is to determine the heat flux density from a source of heat radiation. The subject of the study is the influence of the sensitivity of the heat flow receiver on its measurement error. In order to study the danger of fire spreading to adjacent construction projects using the heat flux criterion, it is proposed to use a heat flux detector FOA-013-01 to measure the heat flux. The heat flux receiver FOA 013-01 is designed for a single measurement of the density of the total heat flux. The principle of operation of the receiver is based on measuring the temperature difference, which occurs when a heat flux between the center and the side of a thin constantan disk mounted on a copper heat sink is exposed. To determine the sensitivity of the heat flux detector FOA 013-01, experimental studies were conducted. The essence of the research was that the three heat receivers FOA 013-01 were influenced by a predetermined flux of 20 kW/m2 and 40 kW/m2. The measurement procedure for each receiver was carried out three times. Based on the received indicators of receivers in mV, a sensitivity coefficient is derived. A comparison of the results was carried out with the results obtained by the heat flux receiver RAP 12.M.2. The verification of the belonging of the dispersions obtained during measurements by receivers to the same population was carried out. The verification showed that the standard deviation for the receiver of the FAA 013-01 is 7.53%, for the receiver RAP 12.M.2 - 3,15%, and the Fisher criterion is 5.7, which does not exceed the table value. The difference between the impressions of the receivers is within 8%. Thus, the indicators obtained by heat flow receivers belong to one general population.

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Published
2020-04-12
How to Cite
Nizhnyk, V., Pozdieiev, S., & Feshchuk, Y. (2020). USE OF THE HEAT FLOW RECEIVER FOA 013-01 WHEN ASSESSING THE DANGER OF THE SPREAD OF FIRE TO ADJACENT OBJECTS. Thermophysics and Thermal Power Engineering, 42(1), 86-92. https://doi.org/https://doi.org/10.31472/ttpe.1.2020.10
Section
Thermodynamics and Transport Phenomena, Nuclear Power Engineering