- Additional Authors
- Description
- 1 online resource (42 pages) : illustrations.
- Summary
- This report investigates the effect that oil concentration had on the boiling performance of an R123/paraffinic mineral oil mixture on a roughened, horizontal flat surface. For all compositions (0.5 %, 1 %, and 2 %), the lubricant caused a heat transfer degradation relative to the heat transfer of pure R123 of between 2 % and 70 % for the range of measured heat fluxes. The heat transfer degradation was shown to increase with lubricant mass fraction. The minimum heat transfer degradation for each mixture ranged between 2 % and 12 % and occurred at approximately 20 kW/m2. For a given composition, the heat transfer degradation increased as the heat flux increased from roughly 20 kW/m2 to 90 kW/m2. In addition, the effect of two trial additives on the pool boiling heat transfer of an R123/paraffinic mineral oil mixture was examined in order to test the validity of a theory for choosing oil additives to enhance boiling performance. The verification tests were inconclusive. More research with lubricants and additives with greater differences in surface tensions is required to develop a more rigorous and quantifiable theory for designing additives that improve boiling heat transfer.
- Series Statement
- NISTIR ; 7336
- Uniform Title
- NISTIR ; 7336.
- Subject
- Note
- "September 2006."
- Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.
- Title from page [1], viewed March 5, 2007.
- Bibliography (note)
- Includes bibliographical references (page 12).
- Call Number
- GPO Internet C 13.58:7336
- LCCN
- GOVPUB-C13-489b90561284b9ea95651b896d6f68ac
- OCLC
- marcive86119043
- Author
Kedzierski, Mark A.
- Title
Influence of concentration and additives on R123/paraffinic material oil boiling heat transfer performance / Mark A. Kedzierski, D.H. Han.
- Publisher
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology, [2006]
- Type of Content
text
- Type of Medium
computer
- Type of Carrier
online resource
- Series
NISTIR ; 7336
NISTIR ; 7336.
- Bibliography
Includes bibliographical references (page 12).
- Connect to:
- Added Author
Han, D. H.
Building and Fire Research Laboratory (U.S.)
- Other Standard Identifier
GOVPUB-C13-489b90561284b9ea95651b896d6f68ac
- Gpo Item No.
0247-D (online)
- Sudoc No.
C 13.58:7336