DFIC has been working on a study to reorganize the energy supply of the Mathematical-Scientific Campus of the University of Cologne. The objective was to ensure a sustainable, climate-friendly, economical and at the same time space-saving energy supply on the basis of trigeneration.

Various energy supply options based on renewable energies have been developed and compared: the options have been examined and evaluated with regard to their impact on the above mentioned targets.

In this context, DFIC performed the following services:

  • Inventory of energy supply: currently over 135,000 m² GFA
  • Specific analysis of a large number of different types of use and of the expansion of a further 30,000 m² GFA
  • Detailed analysis and forecast of energy demand information
  • Development of an energy supply concept including:
    • Technical planning and plant design
    • Economic planning
    • Other planning
    • Alternative concepts for implementation (BOO, IPP, ESCo and outsourcing models).

The DFIC approach for the study on trigeneration is characterised by the following elements:

  • Optimisation regarding centralised - decentralised heating and cooling
  • Use of existing district heating networks and refrigeration machines as back-up and for peak load coverage
  • Storage of hot water for peak smoothing, in particular for refrigeration
  • Optional addition of solar thermal energy, in particular to cover cold peaks in summer
  • Two-stage procedure:
    • Larger number of possible scenarios
    • Workshop to identify 3 preferred supply variants which have to be examined in detail
    • Optimisation / sizing of cogeneration engines.

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