The closed stacks of a library are a maze of spaces, and the addition of evacuation behavior characteristics makes it difficult to predict evacuation routes using commonly used evacuation simulations that prioritize the shortest path. This study conducted an evacuation experiment in a closed stack of a library to model route choice behavior during evacuation in terms of straightness. The experiment suggested that subjects tended to select a short and straight route. An evacuation simulation system was implemented to select the shortest route with a small turning angle ratio (the ratio of the turning angle when changing direction to 90 degrees). Comparative validation of the turning angle ratio was performed by evacuation simulation. The route selection results were generally similar to those of the evacuation experiment.

In order to apply acoustic tomography to temperature measurement in fire fields containing flames, we proposed a new method of analyzing signal waveforms and investigated its practicality by measuring the area where flame exists. The changes in pressure and chemical species predicted in the fire field and their effects in the presence of solid obstacles were also investigated. Measurements of the area where the flame exists showed that the difference from the theoretical value was less than 10 µs. The only effect on the signal waveform was an attenuation of the signal intensity, which was the same for all conditions considered. The measurement limit inferred from the attenuation of the signal intensity was a space occupancy of 99% or more, indicating the possibility of temperature measurement even if most of the space is filled with solid particles, as long as there is a space where sound waves can pass through.