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Single-tank heat storage using molten salt can save storage cost relative to two-tank heat storage system. In order to obtain the heat discharge mechanism of molten salt in single energy storage tank, a spiral coil heat exchanger is placed in the annular gap that is formed by a two open ended cylindrical baffle and the tank wall. The energy discharge performance in the single tank is analyzed. The results show that the flow filed of molten salt in the storage tank can be adjusted using cylindrical baffle, and the heat exchanger outlet temperature, heat transfer capacity, transient heat exchanger effectiveness can also be improved. The results can be a base for the design of single energy storage tank. © 2016, Science Press. All right reserved.
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