The steam power output of a helical-col generator is both experimentally and numerically examined using Nusselt number correlations from literature. Validation studies of the correlation models examined herein are performed for a mass flux G of 84 kg.s-1.m-2, power output Q of 15.5 kW, supply pressure P of 0.81 MPa and internal tube-diameter to coil-diameter ratio Di/Dc of 0.027. Existing two-phase models applied with Newton’s Law of cooling, lead to an under-prediction of the coil size, namely, the tube length requirement for a specified power output by about 20%.
Temperature and thermal power measurements for a helical-coil steam generator in a thermal storage tank of molten solar salt
Costas Marakkos, Efstathios Stiliaris, Elena Guillen, Alaric Montenon, Costas Papanicolas; Temperature and thermal power measurements for a helical-coil steam generator in a thermal storage tank of molten solar salt. AIP Conf. Proc. 27 June 2017; 1850 (1): 150003. https://doi.org/10.1063/1.4984532
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