Characterization of Particulate From Fires Burning Silicone Fluids  

Oleh:

Buch, Robert ; Kashiwagi, Takashi ; Mulholland, George ; Sivathanu, Yudaya ; Hamins, Anthony

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 123 no. 6 (Dec. 2001), page 1093-1097.
Topik: FLUIDS; characterizaton; particulate; fires; silicone fluids

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

The optical properties of particulate emitted from fires burning two distinct polydimethylsiloxane fluids (D4 and M2 or MM, where D = (CH(3))(2)SiO and M = (CH(3))(3)SiO(2)) were obtained using a transmission cell - reciprocal nephelometer in conjunction with gravimetric sampling. The specific absorption coefficient of particulate ash from fires burning D(4) and MM is significantly lower than that of particulate soot from an acetylene (hydrocarbon) flame. Scattering is the dominant part of extinction in fires burning the silicone fluids. This is very different from extinction by soot particles in hydrocarbon fires, where absorption is approximately five times greater than scattering. Temperatures and particulate volume fractions along the axis of a silicone fire (D(4)) were measured using multi - wavelength absorption / emission spectroscopy. The structure of the D(4) flames is markedly different from hydrocarbon flames. The temperatures and particulate volume fractions very close to the burner surface are much higher than in comparably sized hydrocarbon flames.

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