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4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Energy use in tobacco curing Énergie et séchage du tabac Maud DELAVAUD.

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Presentation on theme: "4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Energy use in tobacco curing Énergie et séchage du tabac Maud DELAVAUD."— Presentation transcript:

1 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Energy use in tobacco curing Énergie et séchage du tabac Maud DELAVAUD (FRANCE)

2 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow The evolution of energy costs for french growers Évolution du coût de lénergie pour les planteurs français

3 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Flue curing costs in France Le coût du séchage Virginie en France From our observatory on production costs, energy costs 2004 / De notre observatoire sur les coûts de production 2004, les charges dénergie 1182 /ha 17% of proportional costs (charges opérationnelles) 0,37 /kg of cured tobacco (kg de tabac sec)

4 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Flue curing in France Le séchage Virginie en France 72 % of bulks = gas 17 % of bulks = fuel 11 % of bulks = electricity

5 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Experimentation on curing in 2006 Expérimentation sur lénergie en 2006 To improve the efficiency of energy use for flue curing / Optimiser lutilisation de lénergie en séchage Virginie bulks thermal diagnosis / diagnostic thermique de fours To test alternative energy sources / Tester des énergies alternatives rapeseed or sunflower oil / huile de colza ou de tournesol multi-fuel boiler / chaudière polycombustible

6 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow First accounts Les premiers constats Survey 2005 / Enquête 2005 Mean consumption of gas = 667 g of gas/kg of cured tobacco consommation moyenne de gaz = 667 g gaz/kg tabac sec Gas consumption depends on / la consommation de gaz dépend General condition of bulks / État des fours Curing management / Conduite de séchage Tobacco tissue / Matière tabac

7 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Aims of Bulk diagnosis Objectif du diagnostic des fours To identify the principle origins of energy loss during curing / Identifier les principales causes de déperdition dénergie au cours du séchage To finalize an excel tool to raise growers awareness on energy consumption / Mettre au point un outil excel pour sensibiliser les producteurs aux problèmes dénergie

8 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Different types of energy losses Différents types de pertes dénergie Bulk wall paroi LOSSES pertes FLOOR LOSSES Pertes dalle 57% WALL LOSSES Pertes parois 25% THERMAL BRIDGE Pont thermique 18% WALL LOSSES Pertes parois 25% THERMAL BRIDGE Pont thermique 18% COLD AREA Zone froide HOT AREA Zone chaude Concrete floor Dalle béton

9 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Distribution of curing energy Répartition de la consommation dénergie Evaporation of tobacco water content Évaporation de leau du tabac 46% Losses through walls and floor Pertes parois et dalle béton 26% Air renewal Renouvellement dair 28%

10 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Results of Bulk diagnosis (part I) Résultats des diagnostics des fours For a better use of energy during curing/ pour une meilleure utilisation de lénergie pendant le séchage To optimize bulk filling with tobacco / optimiser le remplissage des fours Manual management of curing is less efficient than automatic management / La conduite manuelle est moins efficace que la conduite automatique

11 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Results of Bulk diagnosis (part II) Résultats des diagnostics des fours (suite) For a better use of energy during curing/ pour une meilleure utilisation de lénergie pendant le séchage To repair all the leaks / réparer les fuites To exploit the different losses to warm up passively the air before introduction in bulks / exploiter les pertes pour préchauffer lair introduit dans les fours

12 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow

13 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow

14 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow

15 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Vegetable oils Huile végétale pure Technical adjustments for curing (burner, oil stockpiling…)/ Des adaptations pour le séchage (brûleur, stockage de lhuile…) Technically conclusive / validé dun point de vue technique Economically unjustified / pas dintérêt dun point de vue économique Oil costs are still too high compared to other energy sources / le prix de lhuile est encore trop élevé par rapport aux autres énergies

16 4th meeting on experimentation in tobacco production 18, 19 et 20th june 2007, Krakow Multi-fuel heater Chaudière polycombustible 1 heater for 5 bulks / 1 chaudière pour 5 fours Heater capacity must be high enough (200 kW) / la puissance de la chaudière doit être élevée (200 kW) You can chose your fuel (wood,…) / possibilité de choisir son combustible High investment quickly recouped by the savings on energy costs / un investissement élevé mais un retour rapide compte tenu de léconomie sur les charges dénergie


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