Share

Flow boiling and pressure drop measurements for R134a-oil mixtures. 1. Evaporation in a microfin tube.

Author(s) : NIDEGGER E., THOME J. R., FAVRAT D.

Type of article: Article

Summary

At low to intermediate vapour qualities (0.2 lower than vapour quality lower than 0.60), oil tended to increase the local boiling coefficient at 300 kilograms/(s.m2) while significant deterioration in boiling performance occurred at the two lower mass velocities. There was strong evidence that oil holdup occurred inside the microfin tube test section and was responsible for the sharp fallof in performance at the mass velocity of 100 kilograms/(s.m2), which means there may be a lower mass velocity limit for effective use of microfin tubes.

Details

  • Original title: Flow boiling and pressure drop measurements for R134a-oil mixtures. 1. Evaporation in a microfin tube.
  • Record ID : 1998-0130
  • Languages: English
  • Source: HVAC&R Research - vol. 3 - n. 1
  • Publication date: 1997/01
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (5)
See the source

Indexing