دانلود رایگان مقاله انگلیسی تطبیق مقاومت حرارتی برای سیستم های خنک کننده ترموالکتریک - الزویر 2018

عنوان فارسی
تطبیق مقاومت حرارتی برای سیستم های خنک کننده ترموالکتریک
عنوان انگلیسی
Thermal resistance matching for thermoelectric cooling systems
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
8
سال انتشار
2018
نشریه
الزویر - Elsevier
فرمت مقاله انگلیسی
PDF
کد محصول
E8530
رشته های مرتبط با این مقاله
مهندسی مکانیک
گرایش های مرتبط با این مقاله
تاسیسات حرارتی و برودتی
مجله
تبدیل انرژی و مدیریت - Energy Conversion and Management
دانشگاه
Key Laboratory of Thermo-Fluid Science and Engineering - Xi’an Jiaotong University - China
کلمات کلیدی
ترموالکتریک، ادغام سیستم، تطبیق مقاومت حرارتی، خنک کننده قابل حمل
چکیده

ABSTRACT


The demand of compactness and light-weight for thermoelectric applications requires optimized system integration of thermoelectric module and heat sinks to achieve the best performance under size and weight constraints. This work studies the thermal resistance matching (i.e., optimal thermal resistance allocation of thermoelectric module and heat sinks) for real thermoelectric cooling systems via an integrated theoretical and experimental method. A theoretical model is first developed to study the relationship of thermal resistance allocation and the system cooling power under different operating currents. Modeling results indicate that the optimal thermal resistance of thermoelectric module should account for 40–70% of the total thermal resistance. The effectiveness of thermal resistance matching is then demonstrated in the selection of an optimal thermoelectric module among 73 off-the-shelf modules to develop a portable thermoelectric cooling system. By comparing the cooling performance of two thermoelectric cooling systems with and without thermal resistance matching, it is experimentally demonstrated that the system with thermal resistance matching achieved 10.7–19.8% larger cooling power under the same size and weight constraints. This can be used as a guideline for optimal design of thermoelectric cooling systems.

نتیجه گیری

4. Conclusions


Thermal resistance matching is important for thermoelectric energy conversion systems. In this work, a theoretical model is established to study the relationship of thermal resistance allocation (of thermoelectric module and heat sinks) and the system cooling power under different operating electric currents. The theoretical results indicate that the optimal thermal resistance of the thermoelectric module accounts for 40%-70% of the total thermal resistance when the thermal resistance ratio between the hot side and the cold side (Rh/Rc) varies within 0.1–10, which can provide a general guideline for thermal resistance matching of thermoelectric cooling systems. The effectiveness of thermal resistance matching is then demonstrated in selecting an optimal thermoelectric module among 73 off-the-shelf modules to develop a portable thermoelectric cooling system. Experimental demonstration is conducted by comparing the performance of two thermoelectric cooling systems with and without optimal thermal resistance allocation. Results indicate that the thermal resistance matching system can achieve 10.7% to 19.8% larger cooling power.


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