Subtle Issues in The Measurement of The Thermal Conductivity of Vacuum Insulation Panels  

Oleh:

Blackwood, James M. ; Moser, Marlow D. ; Wessling, Francis C.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 126 no. 2 (Apr. 2004), page 155-160.
Topik: THERMAL INSULATION; subtle issues; measurement; thermal conductivity; vacuum insulation panels

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.8 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Vacuum insulation panels have values of thermal conductivity that are extremely low (~ 4 mW/m·K) compared to the thermal conductivity of most common insulations. Typical ASTM test methods are not designed for testing these very low thermal conductivity materials. An apparatus has been built and tested that uses a thin foil heater and vacuum chamber to test vacuum insulation panels. Several different measurement configurations are studied to determine the effects of the parasitic heat losses. The differences between the ASTM standards and this technique are described and the rationale explained. A new ASTM technique for vacuum panels appears to be needed.

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