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85 Energy Efficiency Measures

Divers Boissons Produits de boulangerie et farine Intersecteurs Viande et produits à base de viande Fruits et légumes Produits à base de poisson, crustacés et mollusques Aliments préparés pour animaux Légumes, huiles et graisses animales Produits à base de poisson, crustacés et mollusques Viande et produits à base de viande Produits laitiers Produits de minoterie, amidons et produits d'amidon Other food products Distilling, rectifying and blending of spirits Wine from grape Cider and other fruit wines Other non-distilled fermented beverages Manufacture of beer Manufacture of malt Manufacture of soft drinks; production of mineral waters and other bottled waters

Regular filter replacement

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Compressed air
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

Filters that are not sufficiently maintained may get clogged over time, thus leading to increased pressure drops in the compressed air system. This will either affect the performance of compressed air users or it will result in higher than then necessary pressure levels at the air compressor(s) for compensations. Regularly maintaining filters can help to avoid such losses.

Energy-optimized compressed air treatment

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Compressed air
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

Compressed air has to satisfy certain quality requirements with regard to its content in terms of particles, oil and moisture. The specific requirements depend on the end-use applications, the food industry, however, usually has strict requirements especially with regard to oil content. The quality of compressed air is adjusted by a combination of dryers and filters located after the air compressor. They either have a direct energy consumption (i.e. a plug) or they operate on compressed air or cause pressure drops. Selecting the proper method for achieving certain quality levels and regularly maintaining filters and dryers is important for achieving energy savings.

Use of variable speed motors

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Electric drives
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

The speed and torque of motors usually depend on the characteristics of the supplied electrical power. Modern power electronics allows to transform the supplied power and to therefore adjust motor operation to the actual operational requirements, e.g. different speeds. This allows for an improved process control as the motor operation actual is more suitable to the requirements of applications with varying speeds/loads. Due to the additional consumption of the electronic circuitry, the use of variable speed drives is not indicated in steady-state operations.

Utilization of efficient transmission systems

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Electric drives
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

Transmission systems such as gears, chains, belts or shafts translate the speed and torque of motors to meet the actual requirements of an application. Depending on the type of transmission equipment, considerable losses can occur, especially if inadequate, poorly maintained or badly installed transmission systems are in use. Reviewing and regularly maintaining transmission systems can therefore help to reduce the load and thus the energy consumption of the motor. From an energy-efficiency perspective the ideal option is to couple the motor directly to the load without using any transmission at all.

Appropriate motor sizing

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Electric drives
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

Motors have ideal points of operation, i.e. where the mechanical output is best as compared to the electrical input power. Oversized motors are more expensive to acquire and they tend to operate outside the optimal point of operation, i.e. they need more power than actually required using a motor of appropriate size. Matching motors with the actual requirements can therefore help to increase energy savings.

Utilization of highly efficient motors

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Electric drives
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

Motors convert electrical energy into mechanical motion. This transformation is subject to various losses. Over the last decades, considerable progress has been made to reduce these losses. As the energy costs for operating regularly running motors easily exceeds their initial costs, it can be highly beneficial to check and replace older motors with more recent models.

Regular motor lubrication

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Electric drives
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

Improper lubrication of motors can increase friction losses in motors. Ensuring a regular and adequate lubrication can therefore help to improve energy efficiency.

Energy-efficient motor repair

  • Catégorie: Cross-Cutting
  • Zone: Processes
  • Sous-domaine: Electric drives
  • Effort de mise en œuvre :  
  • Potentiel d'économie :  

Especially larger motors are regularly repaired during their lifetime. Motor repairs can affect the overall performance of a motor including their energy efficiency. When the need for repairs occurs, it is advisable to first check on the costs and savings of an entire replacement with a new motor. If the repair is the preferred option, it should preferably be done by specialists authorized by the motor manufacturer.

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