Influence of Compartment Fire Behavior at Ignition and Combustion Development Stages on the Operation of Fire Detectors

Fire

Alena Zhdanova¹  Roman Volkov¹  Geniy Kuznetsov²  Pavel Strizhak²  Aleksandr Sviridenko² 

[1] Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;School of Energy and Power Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;

关键词: compartment fires;    fire source;    fire behavior;    detector response time;    combined systems of fire source recording;   

DOI  :  10.3390/fire5030084

来源: DOAJ

【 摘 要 】

This paper presents experimental research findings for those involved in the early phase of fire in office buildings. Class A model fires with a reaction area from 5 cm² to 300 cm² were chosen for investigation. To mock up a fire, the following combustible materials typical of offices were used: wood pieces, heat-insulated linoleum, paper and cardboard. The main characteristics of a model fire were recorded: temperature in the combustion zone, heat release, time of complete burnout and concentration of flue gas components. Typical trends and histograms of changes of these characteristics over time were presented; stages of ignition, flame combustion and smoldering were illustrated. The key characteristics of fire detector activation at different stages of model fire combustion were analyzed. Dead bands and operation conditions of a group of detectors (smoke, heat, optical, flame), their response time and errors were identified. It has been established that the most effective detectors are flame and smoke detectors. Specific operational aspects of detectors were established when recording the ignition of different types of model fires. The viability of combining at least two detectors to record fire behavior was established. Recommendations were made on using the obtained findings when optimizing the systems for detecting and recording the start of a compartment fire.

【 授权许可】

Unknown