Transition boiling heat transfer in a vertical round tube

Technical Report · Fri Sep 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/6494140· OSTI ID:6494140

Weisman, J.; Kao, Y. K.; Rahrooh, G.

Transition boiling heat transfer coefficients have been obtained for water at pressures of 25 to 75 psia and mass velocities from 14,000 to 140,000 lbs/hr ft/sup 2/. The water flowed inside a 1/2 in O.D. tube and was heated by hot mercury flowing in an annulus around the tube. Thermocouple pairs placed on the outside of the central tube and outer pipe at several axial elevations allowed the rate of heat transfer to be determined. The data agreed reasonably with the correlation previously proposed. However, the observed heat transfer coefficients show less of a decrease with increasing temperature than was seen in previous tests in which the water flowed in an annulus.

• Research Organization: Cincinnati Univ., OH (USA). Dept. of Chemical and Nuclear Engineering
• OSTI ID: 6494140
• Report Number(s): EPRI-NP-895
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
ACCIDENTS
BOILING
COOLANT LOOPS
COOLING SYSTEMS
ENERGY TRANSFER
HEAT TRANSFER
LOSS OF COOLANT
PHASE TRANSFORMATIONS
REACTOR ACCIDENTS
REACTORS
SIMULATION
TEMPERATURE DEPENDENCE
TRANSITION BOILING
WATER COOLED REACTORS