Nucleate Pool Boiling of R-114 and R-114/Oil Mixtures from Single Enhanced Tubes

Abstract

Nucleate pool boiling heat transfer is an integral part of any vapor- compression refrigeration cycle. With a view to improving overall cycle efficiency, the heat transfer performance in the evaporator can be improved by using enhanced boiling surfaces. This thesis looks at the pool boiling characteristics of R-114 (presently used in large shipboard AC systems) from 10 enhanced single copper tubes and compares performance with a smooth copper tube. Since small amounts of oil escape into the refrigerant as it passes through the compressor of a refrigeration system, tests have also been conducted with up to 10% (by weight) of a miscible oil to see what effect this may have on overall evaporator performance.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1991
Accession Number
ADA245487

Entities

People

  • Dean C. Sugiyama

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems
  • Sensors

DTIC Thesaurus Topics

  • Alkenes
  • Compressors
  • Computer Programs
  • Cooling
  • Critical Temperature
  • Engineering
  • Heat Energy
  • Heat Transfer
  • Heat Transfer Coefficients
  • Latent Heat
  • Liquid Explosives
  • Measurement
  • Mechanical Engineering
  • Refrigeration Systems
  • Thermal Conductivity
  • Thermophysical Properties
  • United States

Fields of Study

  • Engineering

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Rocket Propulsion.
  • Thermal Physics or Thermal Science.