کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6682986 | 501849 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of maximum temperature drop across thermoelectric cooler through two-stage design and transient supercooling effect
ترجمه فارسی عنوان
افزایش حداکثر افت دما در داخل یخچال ترموالکتریک از طریق طراحی دو مرحله ای و تأثیر بیش از حد برروی گذرا
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کلمات کلیدی
کولر ترموالکتریک، حداکثر افت دما، دو مرحله ای سوپراکرینگ گذرا، جریان پالس
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
In this work, a new design concept which combines two-stage design with transient supercooling effect is proposed to enhance the maximum temperature drop across thermoelectric coolers (TECs). A three-dimensional, multiphysics, and transient model is used to examine the design effectiveness. Step current pulses with various amplitudes (P) and widths (Ï) are supplied to the two stages of a two-stage TEC in series. The results show that, as compared with the single-stage counterpart, a significant improvement in the maximum cold-end temperature drop (ÎTc,max) is observed for the two-stage TEC. Meanwhile, the new design also greatly reduces the temperature overshoot (Tc,max) and increases the holding time of supercooling state (Îthold). Subsequently, effects of the pulse amplitude, width, and shape are discussed and two important geometry parameters: the cross-sectional area ratio of p-type leg to n-type leg and the leg length ratio of cold stage to hot stage are investigated. These results confirm that ÎTc,max, Tc,max, and Îthold can be further improved by optimizing the pulse and the geometry parameters. This work provides a feasible cooling approach for some specific cooling targets, such as mid-infrared laser gas sensors or any other semiconductor devices which require a temporary but large temperature drop.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 175, 1 August 2016, Pages 285-292
Journal: Applied Energy - Volume 175, 1 August 2016, Pages 285-292
نویسندگان
Hao Lv, Xiao-Dong Wang, Jing-Hui Meng, Tian-Hu Wang, Wei-Mon Yan,