Journal of Nuclear Energy Science & Power Generation TechnologyISSN: 2325-9809

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Research Article, J Nucl Ene Sci Power Generat Technol Vol: 6 Issue: 1

Investigation on Heat Transfer Behaviour of Molten Salt Natural Circulation Loop using Numerical Simulations

Jayaraj Yallappa Kudariyawar1*, Abhijeet Mohan Vaidya2, Naresh Kumar Maheshwari2, Polepalle Satyamurthy3, Abhishek Kumar Srivatsav2 and Babalu Mohan Lingade2
1Homi Bhabha National Institute, Anushaktinagar, Mumbai, India
2Bhabha Atomic Research Centre, Trombay, Mumbai, India
3Institute of Plasma Research, Gandhinagar, India
Corresponding author : Jayaraj Yallappa Kudariyawar
DGFS PhD Candidate, Homi Bhabha National Institute
Anushaktinagar, Mumbai - 400 094, India
E-mail: [email protected]
Received: June 08, 2016 Accepted: December 28, 2016 Published: January 18, 2017
Citation: Kudariyawar JY, Vaidya AM, Maheshwari NK, Satyamurthy P, Srivatsav AK, et al. (2017) Investigation on Heat Transfer Behaviour of Molten Salt Natural Circulation Loop using Numerical Simulations. J Nucl Ene Sci Power Generat Technol 6:1. doi: 10.4172/2325-9809.1000165

Abstract

Molten salts are used as a coolant/heat transfer fluid in various high temperature engineering systems owing to their high boiling point at low pressure. Natural circulation of molten salt is being preferred in some systems like solar thermal power plant or in some nuclear reactors. Such systems can be studied with the help of a natural circulation loop. In this work, heat transfer characteristics of Molten Salt Natural Circulation Loop (MSNCL) are studied using 3D CFD simulations. Molten Nitrate salt, NaNO3+KNO3 (60:40 ratio by weight), is used as a fluid in MSNCL. In the MSNCL, in heater section, flow is developing and also mixed convection flow regime exists. The local Nusselt number variation in heater is calculated from computed data and is compared with that from Boelter correlation. Steady state heat transfer characteristics are obtained over a wide range of Reynolds number using CFD simulations. Unsteady heat transfer characteristics in the oscillatory flow formed in MSNCL with horizontal heater configuration are also studied and are found to be different as compared to vertical heater placed in vertical heater horizontal cooler configuration.

Keywords: Heat transfer behaviour; Numerical simulation; Molten salt; Natural circulation loop

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