IIR document

Design of an integrated energy system using a cascade high temperature heat pump with zeotropic refrigerants.

Number: 1281

Author(s) : VOLPATO O., EIKEVIK T. M., GANESAN P., HAMID K.

Summary

This investigation deals with the design and modeling of an integrated energy system (IES) for district heating. It consists of a heat pump, district heating network, phase change material (PCM) thermal storage, photovoltaic (PV) panels, borehole, and battery. The system harnesses the power of a cascade high-temperature heat pump utilizing zeotropic refrigerants such as CO2/butane (3%/97%) and CO2/pentane (2%/98%) for low stage and high stage, respectively. The heat pump design was specifically sized to generate hot water at 100°C, coupled with a Coefficient of Performance (COP) above 3.6. The IES was simulated in Oslo, Norway, with a Matlab model over a year on an hourly basis, underlying the practical applicability to real-world scenarios. The system provides enough heat to satisfy the demand for 9/12 months of the year while also achieving self-sustainability during its operation. Zeotropic refrigerants add an extra layer of efficiency and adaptability thanks to their temperature glide. This remarkable success is a significant jump forward for clean and sustainable district heating.

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Pages: 11 p.

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Details

  • Original title: Design of an integrated energy system using a cascade high temperature heat pump with zeotropic refrigerants.
  • Record ID : 30032760
  • Languages: English
  • Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Publication date: 2024/08
  • DOI: http://dx.doi.org/10.18462/iir.gl2024.1281

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