고온 발전용 산화물 열전모듈의 설계
The Design of Oxide Module for High Temperature Thermoelectric Power Generation
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초록
고온 발전용 열전모듈을 p-type으로는 Ca2.7Bi0.3Co4O9,n-type으로는 Ca0.96Bi0.04Mn0.96Nb0.04O3 을 선택하고 알루미나 기판 위에 1쌍과 2쌍을 제조하였다. 산화물 열전 모듈의 최적화 설계를 위해 먼저 1쌍의 열전모듈의 실험 결과로부터 전극의 접촉저항을 산출하여 2쌍 모듈에 적용함으로써 저항과 출력 특성을 예측하였다. 예측된 2쌍 모듈의 계산 값과 제조된 2쌍 모듈의 실측 값을 비교함으로써 모듈 설계 를 위한 접근방법을 검토하였다. 2쌍 모듈의 계산된 저항과 측정된 저항은 각각 Th=833 K에서 0.954 Ω 과 1.105 Ω으로 약 0.15 Ω 정도의 차이로 근접한 결과를 얻었으며, 제시된 방법으로 고온산화물 열전 모 듈 제작에 유효하다고 판단된다.
Abstract
The one and two pairs of oxide modules for high temperature thermoelectric power generation were fabricated with Ca2.7Bi0.3Co4O9(p-type) and Ca0.96Bi0.04Mn0.96Nb0.04O3(n-type) on Al2O3 substrate. For the optimizing of the design process, contact resistance was derived from the results of the one pair modules, and the resistance of two pair modules were calculated to use a derived data. Those values were compared with the measured values for the optimizing of this design process. The resistance of calculated and measured two pairs modules was 0.956 Ω and 1.110 Ω at Th=833 K, respectively, the difference of resistance was about 0.15 Ω. From this result, this proposed design process is effective for high temperature thermoelectric oxide modules fabrication.
참고문헌 (8)
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