Seubert, BernhardBernhardSeubertRojas, E.E.RojasRivas, E.E.RivasGaggioli, W.W.GaggioliRinaldi, L.L.RinaldiFluri, ThomasThomasFluri2022-03-132022-03-132016https://publica.fraunhofer.de/handle/publica/39467710.1063/1.49491762-s2.0-84984537171A 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.enconference paper