http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
황찬순,이형주,김진섭,이정희,박세일,권성원 한국센서학회 2002 센서학회지 Vol.11 No.3
저주파수의 저전압용 크로멜-알루멜 다중접합 열전변환기를 개발하고자 NiCr 히터의 두께를400 nm, 600 nm 및 800 nm로 변화시켰다. 40 Hz∼10 kHz의 직류 역방향 주파수 범위로 0.5 V의 교류 실효전압을 열전변환기에 인가시켰을 때 히터의 두께가 400 nm인 열전변환기가 ±0.51∼±1.69 ppm 범위의 열전효과에 의한 교류-직류 전압 변환오차를 나타내었고, 열전효과 및 주파수에 의한 교류-직류 변환오차는 40 Hz∼l MHz의 주파수 범위에서 ±40∼±115 ppm 범위를 나타내어, 저주파수의 저전압용으로 사용할 수 있었다. NiCr-heaters with three different thicknesses ranging from 400 nm to 800 nm were fabricated and their characteristics were compared for the purpose of developing a chromel-alumel multijunction thermal converter for low input voltage with low frequency. The thermoelectric effect-induced AC-DC voltage transfer difference of the thermal converter with a built-in NiCr-heater of 400 nm-thickness was ±0.51∼±1.69 ppm in the DC reversing frequency of 40 Hz∼10 kHz with appling 0.5 V_rms and the difference was increased to ±40∼±115 ppm in the frequency of 40 Hz~l MHz, when both thermoelectric effects and frequency effects were considered, showing the thermal converter would be suitable for the low input voltage application with low frequency.
유한 요소법에 의한 평면형 다중접합 열전변환기의 온도분포 해석
박세일,조현덕,이종현,권성원,김진섭,권재우,황찬순,이정희 한국센서학회 2001 센서학회지 Vol.10 No.3
Real temperature profiles of a planar chromel-alumel mutli-junction thermal converter(TC 1) were measured by thermal image. Temperature profiles as a function of input power of thermal converters(TC 1∼TC 6) were simulated by 3-dimensional ANSYS program based on finite element method Temperature difference between the hot junction and the cold junction for TC 1 was smallest and largest for TC 6 and correspondingly, the voltage response for TC 1 and TC 6 showed the smallest value of 3.09 mV/mW and the largest value of 4.03 mV/mW, respectively.