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A Theoretical-Experimental Comparison of an Improved Ammonia-Water Bubble Absorber by Means of a Helical Static Mixer

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  • Jesús Cerezo

    (Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca 62209, Morelos, Mexico)

  • Roberto Best

    (Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Temixco 62580, Morelos, Mexico)

  • Jorge Jesús Chan

    (Universidad Autónoma de Campeche, Av. Agustín Melgar s/n, Buenavista 24030, Campeche, Mexico)

  • Rosenberg J. Romero

    (Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca 62209, Morelos, Mexico)

  • Jorge I. Hernandez

    (Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Temixco 62580, Morelos, Mexico)

  • Fernando Lara

    (Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal s/n, Insurgentes Este, Mexicali 21280, Baja California, Mexico)

Abstract

The heat transfer in double pipe heat exchangers is very poor. This complicates its application in absorption cooling systems, however, the implementation of simple passive techniques should help to increase the heat and mass transfer mainly in the absorber. This paper carried out a simulation and its experimental comparison of a NH 3 -H 2 O bubble absorption process using a double tube heat exchanger with a helical screw static mixer in both central and annular sides. The experimental results showed that the absorption heat load per area is 31.61% higher with the helical screw mixer than the smooth tube. The theoretical and experimental comparison showed that the absorption heat load difference values were 28.0 and 21.9% for smooth tube and the helical mixer, respectively. These difference values were caused by the calculation of the log mean temperature difference in equilibrium conditions to avoid the overlap of solution temperatures. Therefore, the theoretical and experimental results should be improved when the absorption heat is included in the heat transfer equation or avoiding the operation condition when output is lower than input solution temperature.

Suggested Citation

  • Jesús Cerezo & Roberto Best & Jorge Jesús Chan & Rosenberg J. Romero & Jorge I. Hernandez & Fernando Lara, 2017. "A Theoretical-Experimental Comparison of an Improved Ammonia-Water Bubble Absorber by Means of a Helical Static Mixer," Energies, MDPI, vol. 11(1), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:11:y:2017:i:1:p:56-:d:124698
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    References listed on IDEAS

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    1. Asfand, Faisal & Bourouis, Mahmoud, 2015. "A review of membrane contactors applied in absorption refrigeration systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 45(C), pages 173-191.
    2. Amaris, Carlos & Bourouis, Mahmoud & Vallès, Manel, 2014. "Passive intensification of the ammonia absorption process with NH3/LiNO3 using carbon nanotubes and advanced surfaces in a tubular bubble absorber," Energy, Elsevier, vol. 68(C), pages 519-528.
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    Cited by:

    1. Fangyang Yuan & Zhengwei Cui & Jianzhong Lin, 2020. "Experimental and Numerical Study on Flow Resistance and Bubble Transport in a Helical Static Mixer," Energies, MDPI, vol. 13(5), pages 1-20, March.
    2. Sehgal, Shitiz & Alvarado, Jorge L. & Hassan, Ibrahim G. & Kadam, Sambhaji T., 2021. "A comprehensive review of recent developments in falling-film, spray, bubble and microchannel absorbers for absorption systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 142(C).

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