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The appliance of NH3/salt working pair on solar-driven sorption thermal energy storage with its numerical thermodynamic analysis.

Number: 1216

Author(s) : LIANG X., ZHOU S., HE G., CAI D.

Summary

Sorption energy storage technique contributes to the recovery of solar energy, waste heat and other sorts of energy sources. In the present study, a solar-driven sorption energy storage system using the ammonia/salt is presented as well as its thermodynamic analysis. NH3/LiNO3 and NH3/NaSCN are chosen to be the sorption materials due to their prominent thermophysical properties. By the means of modelling the charging and discharging process, dynamical variations of features such as coefficient of performance are revealed within a long-term period. Comparison between NH3/LiNO3 and NH3/NaSCN has been made to evaluate their pros and cons respectively. The simulation results showed that, NH3/NaSCN working pair seems to gain a better performance at most of working conditions while NH3/LiNO3 functions steadily at a larger range of ammonia mass fraction. Highest system efficiency has been gained as 0.74 by NH3/NaSCN while highest storage capacity of 2097 kJ/kg by NH3/LiNO3. Both of them shows great potentials on the future appliance of sorption thermal energy storage technique.

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The appliance of NH3/salt working pair on solar-driven sorption thermal energy storage with its numerical thermodynamic analysis

Pages: 6

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Details

  • Original title: The appliance of NH3/salt working pair on solar-driven sorption thermal energy storage with its numerical thermodynamic analysis.
  • Record ID : 30027899
  • Languages: English
  • Subject: Technology
  • Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
  • Publication date: 2020/12/07
  • DOI: http://dx.doi.org/10.18462/iir.gl.2020.1216

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