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Gestion efficace des installations frigorifiques avec de l’air, de l’eau ou de l’huile dans l’ammoniac, pour économiser l’énergie.

Effective handling of air, water, and oil in ammonia refrigeration systems to conserve energy.

Auteurs : DANDAWATE L.

Résumé

In our experience: Air, water and oil are the cause of most problems in refrigeration systems. Symptoms include: (1) Loosing capacity over the years. (2) Capacity problems during the summer. (3) Increased power consumption. (4) Higher service/maintenance costs. (5) Oil decomposing. (6) Unexplained behavior… Often the symptoms are addressed, not the root problem. What happens ? (1) Air: (a) Occupy condenser surface -> higher condensing pressure. (b) Blocking drainage of liquid. (c) Chemical reactions, oxidation of oil and metals. (d) Control problems due to air pockets (HP float valves). (2) Water: (a) Chemical reactions, breaking down of oil, corrosion. (b) Shift in saturated vapor pressure. (c) Lubrication problems (especially ball and roller bearings). (3) Oil: (a) Heat exchanger and/or evaporator fouling. (b) Cost of oil, filling and draining by authorized personnel, disposal. (c) Risk of ammonia leaks during draining.

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Pages : 20 p.

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Détails

  • Titre original : Effective handling of air, water, and oil in ammonia refrigeration systems to conserve energy.
  • Identifiant de la fiche : 30021380
  • Langues : Anglais
  • Source : Sustainable management of refrigeration technologies in marine and off-shore fisheries sectors.
  • Date d'édition : 06/04/2017

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