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@ARTICLE{Roskosch:904192,
      author       = {Roskosch, Dennis and Venzik, Valerius and Schilling,
                      Johannes and Bardow, André and Atakan, Burak},
      title        = {{B}eyond {T}emperature {G}lide: {T}he {C}ompressor is {K}ey
                      to {R}ealizing {B}enefits of {Z}eotropic {M}ixtures in
                      {H}eat {P}umps},
      journal      = {Energy technology},
      volume       = {9},
      number       = {4},
      issn         = {2194-4288},
      address      = {Weinheim [u.a.]},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2021-05762},
      pages        = {2000955 -},
      year         = {2021},
      abstract     = {Zeotropic mixtures are widely discussed as alternative
                      refrigerants for vapor-compression cooling appliances and
                      heat pumps. Mixtures can increase efficiency due to their
                      nonisothermal phase change. In theoretical studies,
                      zeotropic mixtures show significant benefits for efficiency
                      if the temperature glide of the mixture matches the
                      temperature change in the heat transfer fluids. Such large
                      benefits have never been observed in experiments. First,
                      this article clarifies the gap between simulations and
                      experiments. Second, it is shown how zeotropic mixtures
                      could increase efficiency in real plants. The analysis is
                      based on experimental results from a heat pump with three
                      zeotropic mixtures and on theoretical studies that also
                      include a physical compressor model. The compressor
                      performance is shown to depend strongly on composition.
                      Therefore, the compressor efficiency is the key parameter
                      for large benefits of zeotropic mixtures beyond
                      well-matching temperature glides. Based on these findings, a
                      fluid database is screened for fluids with well-matching
                      temperature glides and high compressor efficiencies,
                      utilizing a physical compressor model. As a result of the
                      screening, the zeotropic mixture R152a/R32 is identified.
                      The corresponding simulations show that zeotropic mixtures
                      can achieve large benefits in heat pump efficiency if the
                      pure components have similar and high compressor
                      efficiencies.},
      cin          = {IEK-10},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-10-20170217},
      pnm          = {899 - ohne Topic (POF4-899)},
      pid          = {G:(DE-HGF)POF4-899},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000619181600001},
      doi          = {10.1002/ente.202000955},
      url          = {https://juser.fz-juelich.de/record/904192},
}