Efficient operation of refrigeration systems

Around 16% of the electrical energy consumed in Germany is used for refrigeration technology. Commercial and industrial refrigeration systems, including process and air conditioning, require almost half of this energy. Measures to modernize these existing systems can save at least 30% of their energy consumption.

The measures to be carried out by the refrigeration system manufacturer at the request of the operator should not be limited to the replacement and use of components, but should also include an improvement in maintenance and servicing as well as the use of heat recovery.

The two new chapters in this edition deal with the economical defrosting of evaporators and the use of "refrigeration electronics", etc. for an energetically transparent representation of the system operation. The focus is equally on saving energy and increasing operational reliability when modernizing existing systems, planning and designing new systems and managing the systems.

The author's proposals are based on three essential prerequisites:

• The improvements must be able to be implemented without lengthy downtimes.
• Operational safety and service life must be maintained or improved.
• The energy saving potential should be so high that the investment costs are amortized within 6-12 months.

Dieter Korn, engineer (grad.), is a self-employed engineer and owner of an engineering office for refrigeration technology. For more than 40 years he worked in refrigeration and air conditioning technology at Linde, Rhein Kälte, Hitachi and Danfoss. His tasks ranged from project planning and order processing to technical support for air conditioning and heat pumps and control technology. The training was supplemented by an "extra-occupational" course in energy consulting/energy management.

Interest group:

• Refrigeration engineer
• Planners and designers of refrigeration systems
• energy consultant
• Operators of refrigeration systems
• fitters and service technicians
• trainee

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