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Flooded boiling of ammonia with miscible oil outside a horizontal plain tube.

Author(s) : ZHENG J. X., JIN G. P., CHYU M. C., et al.

Summary

Pool boiling tests were conducted with plain steel tubing using pure ammonia and a mixture of ammonia and a miscible lubricant. By comparing the results, the effect of miscible lubricant on shell-side boiling heat transfer coefficient of ammonia was quantified. The experiment covered saturation temperature from -23.3 to 7.2 °C and heat flux up to 60 kW/m2. Variations of heat transfer coefficient versus oil content were investigated. The largest degradation of heat transfer performance due to the miscible lubricant occurs at a temperature of -23.3 °C where the heat transfer coefficient can be reduced by up to 33%.

Details

  • Original title: Flooded boiling of ammonia with miscible oil outside a horizontal plain tube.
  • Record ID : 2003-1181
  • Languages: English
  • Source: ASHRAE Transactions. 2001 annual Meeting, Cincinnati, Ohio. Volume 107, part 2 + CD-ROM.
  • Publication date: 2001/06/24
  • Document available for consultation in the library of the IIR headquarters only.

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