| 摘要 |
PROBLEM TO BE SOLVED: To safely measure a concentration distribution (diffusion distribution) of a gas component evaporated from a volatile liquid, in a short time. SOLUTION: A weight of the volatile liquid 23 arranged in a wind tunnel 21 is measured by a weight measuring instrument 24, and an evaporation amount of the volatile liquid is found in response to a change of the weight of the volatile liquid, in an arithmetic unit 26. A simulation gas having a specific gravity to air same to a specific gravity to air of the volatile liquid is generated to inject the simulation gas into the wind tunnel at an injection amount corresponding to the evaporation amount, a concentration of the simulation gas injected into the wind tunnel is detected in a lee side to obtain a concentration distribution of the simulation gas, and a diffusion phenomenon is measured using the concentration distribution of the simulation gas as the concentration distribution of the gas component evaporated from the volatile liquid. COPYRIGHT: (C)2006,JPO&NCIPI
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