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Energy and CO2-emission reduction in industrial ammonia refrigeration: an end-user perspective.

Author(s) : GERWEN R. J. M. van

Summary

Unilever, one of the largest fast moving consumer goods companies in the world, is also one of the largest end-users of industrial refrigeration. Unilever publically launched their Sustainable Living Plan at the end of 2010: whilst aiming to double the growth of the company, the goal is to halve the impact on water, waste and greenhouse gases (GHG) per consumer use across the lifecycle of the products. Manufacturing sites represent only 3% of the greenhouse gas footprint; however Unilever is directly responsible for this. The manufacturing carbon footprint, requires a robust implementation plan which has been developed, including concepts for new ‘’green’’ factories and production lines, production process improvements, use of renewable energies, and improvements in existing manufacturing sites. Supporting benchmarking techniques have been investigated, but currently appear not to be practical as main improvement driver for existing manufacturing sites due to the wide variability of parameters. A sophisticated system using a large number of detailed improvement levers has been chosen as most appropriate to drive improvement. An assessment in each manufacturing site of current status on each lever, using a scoring scale of four stages of excellence, results in qualitative and quantitative improvement potentials for each lever. For industrial refrigeration energy and GHG, ten improvement levers have been identified, and saving potentials quantified. These levers cover the whole improvement range, from minimising refrigeration loads, optimising operational conditions and settings, advanced control strategies, efficient designs and components, refrigeration system heat recovery, up to implementing advanced energy-efficient technologies like heat pumps for upgrading condenser heat, or the use of trigeneration.

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Pages: 8 p.

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Details

  • Original title: Energy and CO2-emission reduction in industrial ammonia refrigeration: an end-user perspective.
  • Record ID : 30002843
  • Languages: English
  • Source: 4th Conference on Ammonia Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 14-16, 2011.
  • Publication date: 2011/04/14

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