Thermal Behavior of Aerogel-Embedded Nonwovens in Cross Airflow

• Autorzy: Xiong Xiaoman , Venkataraman Mohanapriya , Jašíková Darina , Yang Tao , Mishra Rajesh , Militký Jiří , Petrů Michal

Identyfikatory

DOI

10.2478/aut-2019-0082

• Języki publikacji: EN

Abstrakty

EN

Thermal performance of aerogel-embedded polyester/polyethylene nonwoven fabrics in cross airflow was experimentally studied by using a laboratory-built dynamic heat transfer measuring device in which the fabric could be applied on a heating rod. Experiments were performed with different airflow velocities and heating conditions. The temperature–time histories of different materials were collected and compared. The temperature difference and convective heat transfer coefficient under continuous heating were analyzed and discussed. Results showed that under preheated conditions, the aerogel-embedded nonwoven fabrics had very small decrease in temperature and good ability to prevent against heat loss in cross flow. As for the continuous heating conditions, the heat transfer rate of each material showed an increasing trend with increase in the Reynolds number. The aerogel-treated nonwoven fabric with the least fabric thickness and aerogel content delivered a significantly increased heat transfer rate at higher Reynolds number. Thicker fabrics with higher aerogel content could provide better insulation ability in cross flow.

Słowa kluczowe

EN

nonwoven fabrics; silica aerogel; cross airflow; heat transfer coefficient

PL

włókniny; aerożel krzemionkowy; przepływ powietrza; współczynnik przenikania ciepła

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2021
• Tom: Vol. 21, no. 1
• Strony: 115--124
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

Xiong Xiaoman

• Technical University of Liberec, Faculty of Textile Engineering, Department of Material Engineering, Liberec 46117, Czech Republic
• Institute for Nanomaterials, Advanced Technologies and Innovation, Department of Machinery Construction, Technical University of Liberec, Liberec, 461 17, Czech Republic

autor

Venkataraman Mohanapriya

• Technical University of Liberec, Faculty of Textile Engineering, Department of Material Engineering, Liberec 46117, Czech Republic

autor

Jašíková Darina

• Institute for Nanomaterials, Advanced Technologies and Innovations, Department of Physical Measurements, Liberec 46117, Czech Republic

autor

Yang Tao

• Technical University of Liberec, Faculty of Textile Engineering, Department of Material Engineering, Liberec 46117, Czech Republic
• Institute for Nanomaterials, Advanced Technologies and Innovation, Department of Machinery Construction, Technical University of Liberec, Liberec, 46117, Czech Republic

autor

Mishra Rajesh

• Technical University of Liberec, Faculty of Textile Engineering, Department of Material Engineering, Liberec 46117, Czech Republic

autor

Militký Jiří

• Technical University of Liberec, Faculty of Textile Engineering, Department of Material Engineering, Liberec 46117, Czech Republic

autor

Petrů Michal

• Institute for Nanomaterials, Advanced Technologies and Innovation, Department of Machinery Construction, Technical University of Liberec, Liberec, 461 17, Czech Republic

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).