Nucleate pool boiling of refrigerant-oil mixtures
This paper describes an experimental investigation to determine the mechanism governing nucleate pool boiling heat transfer in refrigerant-oil mixtures, the role diffusion plays in this process, and the influence of the fluid mixture properties. Boiling heat transfer data were taken in mixtures of up to 10% oil by weight in R-113. Thermophysical properties of the mixtures (density, viscosity, surface tension, specific heat, and contact angle) were measured. The decrease in heat transfer coefficient with increasing oil concentration is attributed to diffusion and changes in the fluid thermophysical properties in an oil-enriched region surrounding the growing vapor bubbles. A correlation based on the postulated mechanism is presented which shows fair agreement with the experimental data from this study and with data obtained from the literature.
- Research Organization:
- Water Technologies Division, Aqua-Chem, Inc., Milwaukee, Wisconsin
- OSTI ID:
- 5303267
- Report Number(s):
- CONF-821101-
- Journal Information:
- Am. Soc. Mech. Eng., (Pap.); (United States), Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Vol. 82-WA/HT-45; ISSN ASMSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nucleate boiling performance of refrigerants and refrigerant-oil mixtures
Investigations of pool boiling heat transfer of binary refrigerant mixtures
Related Subjects
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOILING
BUBBLE GROWTH
DENSITY
DIFFUSION
DISPERSIONS
ENERGY TRANSFER
FLUIDS
GASES
HEAT TRANSFER
INCIDENCE ANGLE
MIXTURES
NUCLEATE BOILING
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFRIGERANTS
SPECIFIC HEAT
SURFACE PROPERTIES
SURFACE TENSION
THERMODYNAMIC PROPERTIES
VAPORS
VISCOSITY
WEIGHT
WORKING FLUIDS