کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
645006 1457132 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental study of unstructured porous media inserts for water recovery in a reduced scale, crossflow cooling tower
ترجمه فارسی عنوان
مطالعه تجربی از درج های رسانه متخلخل غیر ساختاری برای بازیافت آب در یک مقیاس کوچک، برج خنک کننده متقاطع
کلمات کلیدی
برج خنک کننده، بازیابی آب ترموسفون، رسانه های متخلخل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• Potential water recovery experiments in wet cooling towers.
• Non-structured porous media condensation layer inserts.
• Reduction of cooling water expenditure in power systems.

The objective of this paper is to report the experimental performance of a novel water recovering system applied to a crossflow cooling tower. For that, a lab-scale experimental setup was built such that it closely resembles the detailed geometry of an actual cooling tower and operates based on identical transport phenomena processes and regimes. To recover the process water evaporated by the cooling air, the experimental apparatus designed, which was 1:20 of a real cooling tower, was assisted by an array of copper tubes installed on both sides of the tower, where cold fluid was circulated by an independent loop. Therefore, immediately after cooling the heated process water, saturated air is forced through the cooled copper tubes partially condensating the process water present in it, which was then reintroduced to the process water loop, returning the cooling air back to the ambient with a lower water content. The experimental setup was tested with four different configurations: (i) without condensating copper tubes, namely “benchmark” configuration, (ii) with copper tubes, (iii) with copper tubes surrounded by a non-structured porous media (i.e., metal foam), which serves as surface area enhancer and (iv) with finned copper tubes surrounded by a non-structured metal foam. The results obtained clearly show that, on average, up to 10% of process water can be recovered through direct condensation. Furthermore, the results also indicate that the use of a non-structured porous media such as tape-like metal foams can significantly improve the water recovering process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 96, 5 March 2016, Pages 632–639
نویسندگان
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