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Analysis of a helical coil once-through molten salt steam generator

Experimental results and heat transfer evaluation
: Seubert, B.; Rojas, E.; Rivas, E.; Gaggioli, W.; Rinaldi, L.; Fluri, T.


Rajpaul, Vikesh (Ed.):
21st SolarPACES International Conference, SolarPACES 2015. Proceedings : 13-16 October 2015, Cape Town, South Africa
New York, N.Y.: AIP Press, 2016 (AIP Conference Proceedings 1734)
ISBN: 978-0-7354-1386-3
Art.070029, 9 S.
International Conference on Solar Power and Chemical Energy Systems (SolarPACES) <21, 2015, Cape Town>
Fraunhofer ISE ()

A molten salt helical coil steam generator is an alternative to kettle- or drum-type evaporators which are currently used in commercial-scale solar thermal power plants. A 300 kW prototype was tested during the OPTS project at ENEA. The experimental results presented in this paper have been used to validate a detailed heat transfer analysis of the whole system. The heat transfer analysis deals with the study of both the overall heat transfer coefficient and the shell-side heat transfer coefficient. Due to the specific features of this type of system, no correlations were available in the literature. A new numerical model to predict the performance of large-scale systems is also presented.