کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8078682 | 1521482 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modeling and simulation for the design of thermal-concentrated solar thermoelectric generator
ترجمه فارسی عنوان
مدل سازی و شبیه سازی برای طراحی ژنراتور ترموالکتریک خورشیدی گرماشی
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کلمات کلیدی
ژنراتور ترموالکتریک خورشیدی متمرکز حرارتی، نسبت غلظت حرارتی، شبیه سازی عددی، مدل معادل، طرح عنصر محدود خنک کننده آب
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
The performances of thermal-concentrated solar thermoelectric generators (TEGs) at three different geometric types are investigated numerically to aid in designing practical devices. The temperature-dependent properties of the commercial thermoelectric material are taken into account, and an equivalent model based on the three-dimensional finite element scheme is developed to simplify and accelerate simulations. The constriction thermal resistance and thermal spreading resistance are considered in the equivalent model. Increasing substrate area increases the thermal concentration ratio; this improves the performance of the solar TEG. In the three geometric types, the smallest element with the substrate area of 90Â ÃÂ 90Â mm2 provides the maximum system efficiency of 4.15%. For a TEG at a given element length, decreasing the cross-sectional area of the thermoelectric element is a feasible route to improve the performance. Under the situation of forced convection, varying convection heat transfer coefficient has an ignorable effect on the performance. For equal convective heat transfer coefficients, water cooling is better than air cooling for the net output power of the TEG because of its increased specific heat. Therefore, water cooling is recommended for the cooling of the solar TEG.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 64, 1 January 2014, Pages 287-297
Journal: Energy - Volume 64, 1 January 2014, Pages 287-297
نویسندگان
Wei-Hsin Chen, Chien-Chang Wang, Chen-I. Hung, Chang-Chung Yang, Rei-Cheng Juang,