Experimental heat-transfer results for molten lead-bismuth eutectic are presented for turbulent flow in a ¾-in. 18-gage mild-steel tube with constant heat flux. Validity of the measurement technique is established indirectly by identical tests with water which agree with the predicted heat-transfer performance for that fluid. Results for lead bismuth are correlated for the Peclet modulus range of 200 to 5000 over a Prandtl modulus range of 0.020 to 0.046 and Reynolds-number range of 7500 to 170,000. The resulting Nusselt moduli are 25 to 35 per cent lower than the prediction of Lyon-Martinelli momentum theory for turbulent flow. Local heat-transfer coefficients at the start of the heated section reveal that the thermal entrance length is approximately 30 pipe diameters.

This content is only available via PDF.
You do not currently have access to this content.