مهندسی شیمی ایران

مهندسی شیمی ایران

ساخت و بررسی پانل تحت خلأ با هستۀ آیروژل و افزایش عملکرد حرارتی آن با افزودن جاذب و بازتابنده‌های تشعشع

نوع مقاله : مقاله پژوهشی

نویسندگان
1 استادیار مهندسی شیمی، دانشگاه زنجان
2 دانشجوی کارشناسی ارشد مهندسی شیمی، دانشگاه زنجان
چکیده
ارتقای اجزای سازندۀ عایق‌‌های پانل تحت خلأ باعث تقویت ویژگی­های حرارتی برتر در آن‌ها می­شود. در این مقاله، با ساخت پانل تحت خلأ باهستۀ آیروژل، بهبررسی اثر لایه­‌های بازتابندۀ تشعشع و مات‌کننده‌ها بر ضریب انتقال حرارت پانل پرداختهشدهاست. پانل­‌های تحت خلأ با پتوی آیروژل، پتوی آیروژل با فویل آلومینیوم چندلایه، پتوی آیروژل حاوی مات‌کنندۀ پودری و پانل حاوی پتوی با فویل و مات‌کننده هم‌زمان ساختهشد. اتلاف توان مصرفی نمونه­ها به‌وسیلۀ دستگاه توان­سنج، اندازه­گیری و مقایسهشد. ایجاد خلأ و افزودن لایۀ بازتابندۀ آلومینیوم و افزودنی مات‌کنندۀ کربن فعال به پانل عایق تحت خلأ منجربه کاهش ضریب انتقال حرارت پتوی آیروژل از W/mK 0/022 به W/mK 0/0127 در خلأ 15 میلی­تور شد. به‌طورکلی، نتایج نشانداد که ایجاد خلأ معمولی در پانل و استفادهاز کامپوزیت پتوی آیروژل و لایۀ بازتابندۀ آلومینیوم و مواد ماتکنندۀ کربن فعال و اکسید آهن بهعنوان مادۀ مرکزی پانل، سبب کاهش 40% انتقال حرارت پانل عایق نسبتبه پتوی آیروژل درحالت فشار اتمسفریک میشود.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Fabrication and Assessment of Vacuum Panel with Aerogel Core and Enhancement its Thermal Performance by Adding Radiation Opacifiers and Reflectors

نویسندگان English

H. Bargozin 1
N. Rahimi 2
Sh. Rajabi 2
1 Assistant Professor of Chemical Engineering, University of Zanjan
2 MSc. Student of Chemical Engineering, University of Zanjan
چکیده English

Upgrading the building components of vacuum panel insulation enhances superior thermal properties in them. In this article, by making a vacuum panel with an aerogel core, the effect of radiation reflective layers and matting agents on the heat transfer coefficient of the panel has been investigated. Vacuum panels were made with aerogel blanket, aerogel blanket with multi-layer aluminum foil, aerogel blanket containing powder matting and panel containing blanket with foil and matting at the same time. The power loss of the samples was measured and compared by a power meter. Creating a vacuum and adding an aluminum reflective layer and an active carbon matting additive to the insulating panel under vacuum led to a decrease in the aerogel blanket heat transfer coefficient from 0.022 to 0.0127 W/m.K in a vacuum of 15 millitorr.
In general, the results showed that creating a normal vacuum in the panel and the use of aerogel blanket and reflector layer and Activated carbon and ironoxide matting materials composite as the central material of the panel causes a 40% reduction in the heat transfer of the insulation panel compared to the aerogel blanket in atmospheric pressure.

کلیدواژه‌ها English

Vacuum Insulation Panel
Nanoporous Silica Airgel Blanket
Heat Transfer Coefficient
Matting
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