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Congrès International sur l’Analyse du Cycle de Vie Lille, Novembre 2011 MJ / MJ of fuel. The value of fuel consumption is the same than for pure vegetable oils used as fuel. Consumption of renewable energy is better than for MEWCO. The tendency is the same regarding to photochemical oxidation potential (3,5.10-5 kg eq. C2H4/MJ of fuel) and human toxicity (1,9.10-3 kg eq. DCB / MJ fuel). Concerning eutrophication potential, the value is similar to MEWCO (7,9.10-5 kg eq. PO43-/MJ of fuel). Only for greenhouse gas emissions WCO are slightly more high (1,55.10-2 CO2eq/MJ of fuel). All these results can be improved. Indeed, such factors as the type of treatment plant used for wastewater, allocations corresponding to the proportion of collected oil actually used for production and more accurate engine tests results. In addition, some mechanical parameters have not been considered in this study. For example, the use of oil in the engine without transformation is quite easy for earlier diesel engines but more difficult on common rail engines and sometimes some modification on engines. In addition, it would be necessary to assess the potential impact of these changes on the engine lifespan. 3) Biological WCO process treatment Gecco, ProBioGEM and PC2A are collaborating on the development of an innovative treatment process to convert waste into biofuel. This process presents environmental constraints and a LCA is made to reach these constraints. Many data are currently lacking to describe fully and consistently this process in a LCA. A first approach by introducing a product A in the previous LCA for the direct use of the WCO shows that the renewable energy consumption would be multiplied by four and the value of other parameters would be multiplied by two or three. The LCA will allow I evaluating the impact of substances used in the process and operating conditions and therefore will be used as a tool for developing the process to obtain the best compromise between biofuel performance and environmental impact. 50
Congrès International sur l’Analyse du Cycle de Vie Lille, Novembre 2011 BILAN CARBONE D’UN MEUBLE FRIGORIFIQUE REFABRIQUE ET/OU RENOVE D. Bibalou*, I. Chaer*, D. Andrews*, G. Maidment* and M. Longhurst** * Faculty of Engineering and Built Environment, London South Bank University, 103 Borough Road, London, SE1 0AA, UK; email: bibaloud@lsbu.ac.uk ** The Bond Group, Bond House, New Road, Sheerness, Kent, ME12 1BB Introduction: Le Royaume-Uni compte 7970 supermarchés en 2010 (IGD Research, 2010). Ils utilisaient, en 2006, environ 800000 meubles frigorifiques (MF). Plusieurs études suggèrent que ces derniers concentrent 33% de la dépense énergétique d’un supermarché. D’autre part, la prolifération de modèles à bas coût participe à l’amenuisement des vies en service des MF. C'est pourquoi, une gestion incorporant le cycle de vie des MF conduira à des réductions d’émissions de CO 2e . L’objectif de ce document étant de quantifier ces dernières en s’intéressant aux pratiques sous-utilisées de refrabrication et de rénovation des MF (12.5% MF sont refabriqués). Méthode : L’étude s’appuie sur le concept du cycle de vie et le logiciel d’éco-conception CES selector/Ecoaudit. Les étapes suivantes constituent la collecte de données : Examen des nomenclatures des dessins d’assemblage. Démontage des MF pour vérification. Audits énergétiques des usines du fabriquant partenaire. Figure 4 Le MF Chicago 1.2m ©The Bond Group Figure 5 Le MF Chicago en plein désossage Tableau 2 Nomenclature partielle du MF Chicago 1.2m ∑Masse (kg) Proportion (%) EoL scenario 1 EoL scenario 2 Matériaux Aluminium 4.59 1.27 Recyclé Rénovation Aluminium, S332.1: LM26-TE, moulé 12.4 3.44 Recyclé Rénovation ASTM CA-6NM 13 3.61 Recyclé Rénovation Cuivre 9.915 2.75 Recyclé Rénovation Mdf 34.9 9.69 Combustion Combustion Polyuréthane 14.29 3.97 Décharge Décharge R404A (réfrigérant) 1.2 0.33 N/A N/A Soda-lime 0080 (verre) 44 12.22 Recyclé Rénovation Acier inoxydable grade 304 45.08 12.52 Recyclé Rénovation Acier galvanisé (zintec) 175.15 48.64 Recyclé Rénovation 51
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