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U.S. Department of Energy
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HEAT-TRANSFER STUDIES ON A FORCED CONVECTION LOOP WITH MONOISOPROPYLBIPHENYL

Technical Report ·
OSTI ID:4281050
Heat-transfer coefficients for monoisopropylbiphenyl, heated in a long horizontal tube under conditions of turbulent flow, are correlated to an average deviation of plus or minus 0.99 percent with an equation of the Dittus-Boelter type. Physical properties used in correlation work are presented. The coefficients extended from 483 to 3107 Btu/hr-ft/sup 2/-- deg F for the following ranges of conditions bulk-fluid temperatures, 240 to 604 deg F; heat-transfer surface temperatures, 312 to 816 deg F; heat fluxes, 44,800 to 308,000 Btu/hr-ft/ sup 2/; Reynolds numbers, 18,500 to 350,000; fluid velocities, 5.7 to 36.4 ft/sec. In fouling experiments, no scaling of the heat-transfer surface of an organic type was observed at the extreme attainable conditions of 850 deg F heat-transfer surface temperature and 5ft/sec fluid velocity. The condition of the equipment after 2 1/2 years of service is discussed. (auth)
Research Organization:
Naval Research Lab., Washington, D.C.
NSA Number:
NSA-13-004811
OSTI ID:
4281050
Report Number(s):
NRL-5225; Project NS 200-021
Country of Publication:
United States
Language:
English