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A geothermal district heating system supplying two kinds of hot water temperature for radiators and radiant floor heating.

Number: 0300

Author(s) : LI T., CHEN W., YU T., LI X., WANG B., SHI W.

Summary

With the rapid  development of radiant floor  heating in residential buildings,  high‐temperature water for  radiators and low‐temperature water for radiant floor heating are needed simultaneously. As a renewable energy solution, the geothermal district heating system(GDHS) is used. In this paper, a GDHS supplying dual‐temperature  hot  water  for  radiators  and  radiant  floor  heating  is  proposed  based  on  absorption  heat pumps(AHP‐GDHS). The mathematical model of AHP is verified and the AHP‐GDHS system is constructed for design application. The influence of geothermal water supply temperature and heating load ratio of radiators on the performance of AHP‐GDHS are explored. Finally, GDHS using heat exchangers for dual temperature supply(HX‐GDHS)  is  compared  with  AHP‐GDHS.  Results  show  that  AHP‐GDHS  has  advantages  in  terms  of  energy utilization and the payback period is 3.77 years. The proposed GDHS which can supply two kinds of hot water temperatures will benefit the district heating system which exists different heating terminals.

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Pages: 12

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Details

  • Original title: A geothermal district heating system supplying two kinds of hot water temperature for radiators and radiant floor heating.
  • Record ID : 30031390
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0300

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