感温塗料を用いた実時間温度場測定システムの開発

抄録

Thermocouple and infrared thermography have been widely used to measure a temperature. However, thermocouple is only one point measurement, and infrared thermography cannot use through infrared impermeable material such as water or acrylic board. To solve these problems, we have developed a real-time temperature measurement system by using temperature sensitive paint (TSP). TSP is a kind of luminescent paint and its luminescent intensity decreases with increasing temperature. Using temperature dependency of TSP, planar temperature distribution can be measured from an image of luminescent intensity taken by digital camera. TSP is composed of luminescent molecule, binder, and solvent. In the present study, Ru(phen)₃²⁺ is adopted as luminescent molecule, and blue LED is used to excite the molecule. To evaluate the present measurement system, the temperature of the side plate in a two-dimensional jet was measured.