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Thermal performance of an absorption-refrigeration system with [emim]Cu2Cl5/NH3 as working fluid

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  • Chen, Wei
  • Bai, Yang

Abstract

The vapor pressures of [emim]Cu2Cl5/NH3 at ammonia mole fractions (x1) ranging from 0.90 to 0.96 at temperatures (T) ranging from 303.15 K to 483.15 K were determined by employing a static method. The correlation of experimental data was calculated by using a modified UNIFAC (Dortmund) model with a total uncertainty of <4.1%. The specific enthalpy of [emim]Cu2Cl5/NH3 binary solution was also calculated on the basis of the predictive excess molar enthalpy of the UNIFAC model. The thermal performance of an absorption refrigeration system with [emim]Cu2Cl5/NH3 as working fluid was simulated. The thermal performance of the [emim]Cu2Cl5/NH3 system is better than those of absorption systems with NH3/H2O, [choline][NTf2]/NH3, [emim][Ac]/NH3, and [emim][EtOSO3]/NH3 as working fluids. The coefficients of performance and exergy efficiency of the [emim]Cu2Cl5/NH3 system are slightly lower than those of the LiBr/H2O system. The evaporating temperature scope of the former is wider than that of the latter. The [emim]Cu2Cl5/NH3 system also possesses several advantages, including non-crystallization and non-corrosion.

Suggested Citation

  • Chen, Wei & Bai, Yang, 2016. "Thermal performance of an absorption-refrigeration system with [emim]Cu2Cl5/NH3 as working fluid," Energy, Elsevier, vol. 112(C), pages 332-341.
    • Handle: RePEc:eee:energy:v:112:y:2016:i:c:p:332-341
    DOI: 10.1016/j.energy.2016.06.093
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    References listed on IDEAS

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