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IIR document

Modeling of spray evaporators for salt solutions.

Number: pap. n. 1522

Author(s) : BOMAN D. B., GARIMELLA S.

Summary

Evaporation is critical for cooling and water purification. Spray evaporators demonstrate advantages over conventional evaporators, including higher rates of heat and mass transfer. In this study, a model for evaporation of saltwater is developed and applied to an evaporator. Energy and species equations are solved in a spherical coordinate system with a moving boundary to determine the temperature and salt concentration within an evaporating droplet. A droplet distribution function is used in conjunction with the model to elucidate the characteristics of the entire flow. Evaporator performance is calculated as a function of inlet temperature, salt concentration, and spray properties. Evaporator size and power requirements are compared with those of conventional evaporators. Based on the simulations, it is shown that using a spray evaporator in a refrigeration cycle using salt water in the evaporator delivers water to the conditioned space heat exchanger at a lower temperature while still requiring low pumping power.

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Pages: 7

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Details

  • Original title: Modeling of spray evaporators for salt solutions.
  • Record ID : 30026759
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1522
  • Notes:

    Keynote


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