Alternative ignition source for testing dust explosion characteristics in closed vessel

• Autorzy: Porowski R.
• Języki publikacji: EN

Abstrakty

EN

To investigate the dust explosion characteristics for lycopodium and niacin at various concentrations the experimental study was performed in 20-litre spherical chamber made of stainless steel. The initial conditions of tested dusts were 1 bar and 200C. By means of pressure measuring system with two piezoelectric PCB transducers, the pressure-time curves that developed following the ignition were recorded. Instead of two chemical ignitors each of 5 kJ we developed our own new high-voltage spark generator. The idea of applied circuit in HV-spark generator is described in ASTM E-2019 and EN 13821. High-voltage pulse generated in the secondary coil of high-voltage transformer creates the spark breakdown of the gap between electrodes installed in the center of 20-litre sphere.

Słowa kluczowe

EN

dust explosion testing; spark generator; alternative ignition system

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2014
• Tom: Vol. 34 nr 1
• Strony: 71--82
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Porowski R.

• Warsaw University of Technology Institute of Heat Engineering, Nowowiejska 21/25, 00 - 665 Warsaw, Poland

Bibliografia

• [1] Eckhoff R.K. (2003). Dust explosions in the process industries, 3rd edition, Gulf Professional Publishing.
• [2] Babrauskas V. (2001), Ignition handbook. SFPE.
• [3] EN 14034 (2011). Determination of explosion characteristics of dust clouds, Parts 1-4. 2011.
• [4] ASTM E-1226 (2010). Standard test method for explosibility of dust cloud. 2010.
• [5] Cashdollar, K.L., Chatrathi, K. (1992). Minimum explosible dust concentrations measured in 20-L and 1- m3 chambers. Combustion Science and Technology, 87, 157.
• [6] Scheid M., Kusche C., Schroder V., Barth U. (2013). Test on suitability of the ignition source “exploding wire” for the determination of explosion characteristics of combustible dusts in the 20 l sphere. Chemical Engineering Transactions, vol. 31: 703-708.
• [7] Parnell C.B., McGee R.O., Ganesan B., Vanderlick F.J., Hughs S.E., Green K. (2013). A critical evaluation of combustible /explosible dust testing methods – Part 1. Journal of Loss Prevention in the Process Industries, 26: 427-433.
• [8] Cashdollar K.L. (2000). Overview of dust explosibility characteristics. Journal of Loss Prevention in the Process Industries, 13: 183-199.
• [9] Serafin J., Bebcak A., Bernatik A., Lepik P., Mynarz M., Pitt M. (2013), The influence of air flow on maximum explosion characteristics of dust-air mixtures. Journal of Loss Prevention in the Process Industries, 26: 209-214.