Experimental Study of Emissivity with the Variation of Temperature and Shape Factor Using the Radiation Apparatus

복사 장치를 이용한 온도와 형상계수의 변화에 따른 방사율에 관한 실험적 연구

Voltage of radiometer is measured experimentally using the radiation apparatus in each case of iron- and copper-plates as specimen heating device. The length between radiometer and conical shield and the temperature of specimen heating device are considered as variables. The length between radiometer and conical shield controls the amount of radiation from the specimen heating device. Emissivity for both iron-and copper-plates are calculated by using Stefan-Boltzmann equation. One of results shows that emissivity for both materials increases as the length between radiometer and conical shield increases.