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SCIENCE CHINA Technological Sciences, Volume 59 , Issue 8 : 1244-1251(2016) https://doi.org/10.1007/s11431-016-6086-2

Natural convection heat transfer of molten salt in a single energy storage tank

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  • ReceivedMar 16, 2016
  • AcceptedMay 17, 2016

Abstract

Heat transfer in molten salt in a cylinder tank is studied via simulation and experiment to obtain its natural convection heat transfer in a single energy storage tank. Simulation and experimental results show that the natural convection heat transfer of water in a cylinder tank fits well with Garon’s correlation. However, significant deviations occur when Garon’s correlation is used to predict the natural convection heat transfer of molten salt because of its high viscosity and low thermal conductivity. However, the simulated data of the natural convection heat transfer of molten salt fit well with those of the experimental results. Thus, a correlation that considers the effect of variable physical properties is proposed in this study to predict the natural convection heat transfer of molten salt. The deviation of the present data from the proposed correlation is less than ±20%. The results of this study can serve as a basis for the design of single energy storage tanks.


Acknowledgment

This work was supported by Beijing Natural Science Foundation (Grant No. 3132012), the National Natural Science Foundation of China (Grant No. 51756006), and by the Project of the International Cooperation and Exchange of the National Natural Science Foundation of China (Grant No. 5136113570).


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