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@INPROCEEDINGS{Stock:1005142,
      author       = {Stock, Jan and Xhonneux, André and Müller, Dirk},
      title        = {{L}ow-{G}rade {W}aste {H}eat {I}ntegration into an
                      {E}xisting {H}igh-{T}emperature {D}istrict {H}eating
                      {S}ystem at the {R}esearch {C}entre in {J}uelich, {G}ermany;
                      35th},
      reportid     = {FZJ-2023-01330},
      pages        = {123-142},
      year         = {2022},
      abstract     = {To decarbonize the building sector, using waste heat
                      sources in district heating systems is crucial for the
                      futureefficient and sustainable heat supply of buildings.
                      This paper investigates a possible integration of a large
                      wasteheat source into an existing local district heating
                      system on the research centre campus in J¨ ulich,
                      Germany.The new energy source to be integrated into the
                      district heating system is a new high-performance
                      computerthat supplies waste heat at a low-temperature level.
                      We investigate the possibilities of integrating the
                      wasteheat source based on the design of the currently
                      operating combined cooling, heating and power
                      generationsystem by calculating and evaluating different
                      system concepts. In addition, we prove the feasible waste
                      heatintegration into the district heating system through
                      network simulations in Modelica. The environmental
                      benefitsin terms of carbon dioxide reduction are evaluated
                      while showing the challenges for an economic
                      realization.However, the usable waste heat in the current
                      energy system is limited since a high workload operation
                      ofthe present combined heating and power system is necessary
                      for an economical operation. Therefore, westudy an approach
                      to maintain a high workload of the combined heat and power
                      system by shifting a higherproportion of high-temperature
                      heat to the absorption refrigerator for cooling purposes.
                      The studied options ofwaste heat integration into the local
                      district heating system show a reduction of carbon dioxide
                      emissions upto 3,396 tCO2 per year. Furthermore, economic
                      integration of the new waste heat source is also feasible
                      byimplementing the studied measures in the local energy
                      system. Therefore, this study shows that it is possibleto
                      integrate a low-grade heat source into an energy system that
                      is mainly supplied by a combined cooling,heating and power
                      generation system.},
      month         = {Jul},
      date          = {2022-07-01},
      organization  = {International Conference on
                       Efficiency, Cost, Optimization,
                       Simulation and Environmental Impact of
                       Energy Systems, Copenhagen (Denmark), 1
                       Jul 2022 - 3 Jul 2022},
      cin          = {IEK-10},
      cid          = {I:(DE-Juel1)IEK-10-20170217},
      pnm          = {1122 - Design, Operation and Digitalization of the Future
                      Energy Grids (POF4-112)},
      pid          = {G:(DE-HGF)POF4-1122},
      typ          = {PUB:(DE-HGF)8},
      url          = {https://juser.fz-juelich.de/record/1005142},
}