Experimental and numerical analyses are carried out for a natural circulation loop (NCL) under low and moderate heater power. The effect of ambient temperature variation on the loop thermal behavior has been taken into account in present study. The effect of liquid inertia has a role in the initial transience, as revealed by the numerical and experimental observations. The steady-state results from the present analyses are validated with the reported dimensionless results for NCL. The experimental steady-state results are in fair agreement with the developed lumped numerical models. At moderate power, the numerical and experimental results indicate periodic oscillations.
Experimental and Numerical Investigation of a Single-Phase Square Natural Circulation Loop
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received May 29, 2014; final manuscript received May 4, 2015; published online August 11, 2015. Assoc. Editor: Sumanta Acharya.
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Saha, R., Sen, S., Mookherjee, S., Ghosh, K., Mukhopadhyay, A., and Sanyal, D. (August 11, 2015). "Experimental and Numerical Investigation of a Single-Phase Square Natural Circulation Loop." ASME. J. Heat Transfer. December 2015; 137(12): 121010. https://doi.org/10.1115/1.4030926
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