کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
656507 1458043 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal–hydraulic evaluation of oscillating-flow regenerators using water: Experimental analysis of packed beds of spheres
ترجمه فارسی عنوان
هیدرولیکی ارزیابی جریانهای نوسانگر با استفاده از آب: تجزیه و تحلیل تجربی از تخت بسته بندی شده از حوزه
کلمات کلیدی
بازسازی کننده منفعل، تبرید مغناطیسی، اثربخشی حرارتی، ماتریس بازسازی کننده، دستگاه تجربی، اندازه گیری های گذرا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• The thermal performance of packed bed regenerators was evaluated in a new apparatus.
• The influences of utilization, frequency and particle size were quantified.
• Four regenerator casings with different aspect ratios were tested.
• Too large or too small aspect ratios should be avoided as they produce more losses.

Thermal regenerators that use liquid heat transfer fluids are being researched for their application in active caloric cooling/heat pumping systems. The performance of active caloric devices is significantly influenced by the regenerator thermal effectiveness and by viscous losses. The present paper is the first part of a study on the thermal–hydraulic evaluation of packed bed regenerators that use water as a thermal fluid. Here, a detailed experimental analysis of the thermal–hydraulic performance of regenerative matrices composed of packed beds of stainless steel spheres is carried out. A laboratory apparatus was developed to quantify the viscous losses and thermal effectiveness in oscillating-flow regenerators that use water as the heat transfer fluid. Operating parameters such as frequency and mass flow rate were varied to cover broad ranges of utilization and number of transfer units (NTU). The diameter of the spherical particles and the dimensions of the regenerator housing were also changed in order to evaluate their influence on the behavior of the time-dependent and time-average performance parameters.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 99, August 2016, Pages 918–930
نویسندگان
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