本研究採用兩種熱電模組進行長期壽命測試,自製模組在溫差150 K(高溫端450 K與低溫端300 K)下進行測試,隨時間之拉長電阻逐漸增加,直到測試時間為10,248小時後,其電阻平均值增加至約為4.9 %。而ZT值部分發現隨時間的衰退幅度不大,直到測試時間為10,248小時,模組平均ZT值衰退量約為4.3 %。商用熱電模組測試條件為模組兩端溫差170 K(高溫端處於470 K與低溫端處於300 K)下測試,測試結果發現在前2,000小時模組之電阻會快速的增加到9~10 %,當測試時間為11,256小時,模組電阻平均值增加至約為13~14 %。
The study investigates two kinds of thermoelectric modules for long-term life tests. The homemade modules are tested in temperature difference 150 K (hot side temperature is 450 K and cold side temperature is 300 K). Electrical resistance of thermoelectric modules increases with increasing time. The average electrical resistance increases about 4.9% until 10,248 hours. The ZT value does not find significant decay. Until the time is 10,248 hours, the average ZT value decreases about 4.3 %. The commercial modules are tested in temperature difference 170 K (hot side temperature is 470 K and cold side temperature is 300 K). Test results show that the electrical resistance quickly increases 9~10 % up to 2,000 hours. Until the time is 11,256 hours, the average electrical resistance increases about 13~14 %.