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Development and demonstration of a microscale absorption heat pump water heater.

Author(s) : KEINATH C. M., GARIMELLA S.

Type of article: Article, IJR article

Summary

The development and demonstration of a compact ammonia–water absorption heat pump water heater using microchannel heat and mass exchangers is presented. The absorber, condenser and evaporator are hydronically coupled, while the desorber is direct natural gas-fired. A heat pump comprised of discrete microchannel components was first fabricated and tested on a breadboard facility. Component and system performance are experimentally investigated over a range of conditions, and insights from experiments are used to refine designs. The refined designs are used to develop an integrated microchannel monolithic heat and mass exchanger packaged into a prototype absorption heat pump water heater containing all auxiliary support systems to allow for connection to a water storage tank. The system is nominally sized to provide 2.79?kW of heat at a coefficient of performance (COP) of 1.74. Performance is experimentally investigated at the design condition of 32°C coupling water into the system and an ambient of 20°C, and over the range of expected water temperatures (10–60°C) and ambient conditions (10–32°C).

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Pages: 151-171

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Details

  • Original title: Development and demonstration of a microscale absorption heat pump water heater.
  • Record ID : 30023518
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 88
  • Publication date: 2018/04
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2018.01.001

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