Comparative study on standardized ignition sources used for explosion testing |
| |
| Institution: | 1. Université de Lorraine, Laboratoire Réactions et Génie de Procédés et Génie de Procédés, UMR 72714, ENSIC, Nancy, F-54001, France;2. CNRS, Laboratoire Réactions et Génie de Procédés, UMR 7274, Nancy, F-54001, France;1. Univ. Orléans PRISME EA 4229, 63 Avenue de Lattre de Tassigny, 18020 Bourges, France;2. CETIM CERTEC, 9 Bvd Lahitolle, 18000 Bourges, France;1. Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le V. Tecchio 80, 80125, Naples, Italy;2. Department of Applied Science and Technology-Politecnico di Torino, C.so Duca degli Abruzzi 21, 10129, Torino, Italy;3. Istituto di Scienze e Tecnologie per l''Energia e la Mobilità Sostenibili (STEMS-CNR), P.le V. Tecchio 80, 80125, Napoli, Italy;1. School of Resource, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China;2. School of Chemical Engineering, University of Queensland, Brisbane, QLD 4072, Australia |
| |
| Abstract: | For the determination of safety characteristics of gases, vapors and dusts different types of ignition sources are used in international standards and guidelines. The paper presents test results of a comparative calorimetric and visual study between four different types of ignition sources. The ignition procedures were analyzed visually with a high-speed camera and electric recordings. In addition to that, the influence of the electrode-orientation, -distance as well as ignition energy on the reproducibility of the exploding wire igniter was tested.The exploding wire is already in use for standardized determination of safety characteristics of gases, first tests on the suitability of the exploding wire igniter for dust testing have been carried out but are not standardized yet. Using the exploding wire, the ignition energy can be varied from 2 J to 10 000 J (2 x 5000 J) and thus it could be used for gases, vapors, dusts and hybrid mixtures. Moreover it can be used at high initial pressures and it is the only ignition source with an easily measurable ignition energy release. Furthermore, it does not introduce another chemical reaction into the system.Finally, a proposal for a standard ignition source for explosion tests on hybrid mixtures is derived from the test results. |
| |
| Keywords: | Ignition source Exploding wire Hybrid mixtures Safety characteristics determination |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
