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Air-cooled absorbers for extreme-ambient absorption heat pumps.

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

Type of article: IJR article

Summary

An investigation of air-coupled absorbers for an ammonia-water absorption system operating in extreme ambient conditions was conducted. Heat and mass transfer modeling was used to predict the performance of round-tube corrugated-fin absorbers for a 2.64-kW absorption chiller operated at high ambient temperatures. A single-pressure ammonia-water test facility was used in conjunction with a temperature- and humidity-controlled air-handling unit to evaluate the absorbers at design and off-design conditions. Absorber performance was studied over a range of air temperatures and flow rates, inlet solution temperatures, and concentrated solution flow rates and concentrations. At design conditions, round-tube corrugated-fin absorbers of 394 and 551 fins per meter (FPM) demonstrated comparable performance, and measured heat transfer rates were predicted well. Results from this investigation can be used to guide the development of air-coupled heat and mass exchangers for compact absorption heat pumps.

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Pages: 260-270

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Details

  • Original title: Air-cooled absorbers for extreme-ambient absorption heat pumps.
  • Record ID : 30027858
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 120
  • Publication date: 2020/12
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2020.08.023
  • Document available for consultation in the library of the IIR headquarters only.

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