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Investigation of adsorption cold storage for residential application.

Number: pap. n. 13

Author(s) : LI G., HWANG Y., RADERMACHER R.

Summary

Thermal energy storage (TES) technologies can reduce or eliminate the peak electric power loads in buildings, and utilize benefits of waste heat recovery and renewable energy. However, exergy performance is not fully revealed, especially for adsorption TES. In this study, energy and exergy performances of adsorption cold storage system were extensively investigated for residential application. With regeneration temperature of 70°C, ambient temperature of 30°C, heat transfer fluid (HTF) inlet temperature for evaporator 30°C, the cold energy storage density (ESD) was approximately 400 kJ•kg-1 with energy efficiency 44.6%. In addition, the exergy efficiency was 4.5%, and the loading difference was 0.165 (adsorbate/adsorbent). As the HTF mass flow rate of the evaporator was decreased, the evaporator HTF outlet temperature decreased, and the exergy efficiency increased. As the evaporator HTF inlet temperature and the regeneration temperature were increased, the cold ESD and cold thermal efficiency and the cold exergy destruction all increased. As the adsorption HTF inlet temperature was decreased, the cold ESD, and recovered exergy increased. The evaporator chamber HTF inlet temperature affected more on energy and exergy performances than that of the evaporator chamber HTF mass flow rate. The results are expected to be beneficial to researchers and engineers for optimization of adsorption TES systems for residential application.

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Pages: 10 p.

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Details

  • Original title: Investigation of adsorption cold storage for residential application.
  • Record ID : 30013320
  • Languages: English
  • Source: International sorption heat pump conference (ISHPC2014), College Park, United States, March 31-April 2, 2014.
  • Publication date: 2014/03/02

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