Effect of calcium sulfate on pool boiling of enhanced heat transfer surfaces

Conference · Thu Mar 01 00:00:00 EST 1990

OSTI ID:6611770

Somerscales, E F.C. ^[1]; Curcio, Jr, L A ^[2]

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1. Rensselaer Polytechnic Inst., Troy, NY (USA)
2. Exxon Research and Engineering Co., Florham Park, NJ (USA)

This paper describes experiments carried out to investigate the effect of precipitation fouling under nucleate pool boiling conditions on the heat transfer of a number of commercially available enhanced heat transfer surfaces. The effects of time of exposure, level of the heat flux, and form of the surface enhancement were investigated. The test fluid was a saturated aqueous solution of calcium sulfate in which the surfaces were continuously exposed for up to 20 hour. The results indicate that fouling, indicated by the change in the wall superheat, occurs immediately on exposure of the test surface to the fluid and the effect becomes constant within two to five hours of five hours of first exposing the surface. The effect of precipitation fouling is greater at higher heat fluxes. The effects of fouling depend on the geometry of the surface enhancement with those surfaces having the lower superheat under clean conditions also exhibiting a lower effect of fouling. 15 refs., 10 figs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls, ID (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: FC07-88ID12772; AC07-76ID01570
• OSTI ID: 6611770
• Report Number(s): EGG-M-90067; CONF-901109-5; ON: DE90013099
• Resource Relation: Conference: International symposium on gas-liquid two-phase flows in conjunction with the winter annual meeting of the American Society of Mechanical Engineers, Dallas, TX (USA), 25-30 Nov 1990
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CALCIUM SULFATES
PRECIPITATION
SURFACES
FOULING
BOILERS
DATA ANALYSIS
HEAT TRANSFER
NUCLEATE BOILING
POOL BOILING
ALKALINE EARTH METAL COMPOUNDS
BOILING
CALCIUM COMPOUNDS
ENERGY TRANSFER
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
420400* - Engineering- Heat Transfer & Fluid Flow
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes