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.

A historical chance as well as a call to actionAgreement als download

DFIC has been advising the city of Eschweiler on the development of a detailed concept for a cogeneration-based local district heating supply.

The core of DFIC’s activities is the development of an investor-operator (ESCO) model as well as the participation of stakeholders, including especially those citizens who need to be gained as customers for the heat supply. Besides the structuring of a co-operative to be established to allow participation in ownership and ensure transparency, the relationship between connection rate and heat price plays an important role. The involvement of the citizens in suitable forms such as energy cooperatives and the associated transparency should lead to high acceptance of local heat among the citizens.

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