Amin Bouzaiene
Design of an SF6 recuperation system.
Rel. Alessandro Hugo Antonio Monteverde, Fabio Alessandro Deorsola. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Chimica E Dei Processi Sostenibili, 2024
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Abstract
Numerous families of particle detectors at CERN utilize gas mixtures containing fluorinated gases, which have significant environmental impacts due to their high Global Warming Potential (GWP). To comply with European emissions regulations, it is essential to either reduce the consumption of these gases or significantly limit their emissions through abatement. Specifically, in Resistive Plate Chambers (RPCs), a mixture of R134a (95.2%), iC4H10 (4.5%), and SF6 (0.3%) is used. Isobutane, being an organic gas, acts as a quencher, absorbing photons produced from recombination processes and limiting the formation of secondary avalanches. SF6 is an electronegative gas that captures free electrons, reducing free charges in the gas volume and suppressing the onset of streamers.
This thesis focuses on the simulation, design, and development of a recovery system for SF6, the fluorinated gas with the highest GWP (23,600), from a mixture of R134a, iC4H10, and N2 originating from the exhaust of the R134a recovery system
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