Experimental Validation of a Dynamic Model for a Mono-tube Cavity Receiver

This paper describes a dynamic model of a steam cavity receiver and presents results from simulations performed using this model in TRNSYS 16. The results are compared with experimental data to inform the calibration of specific model parameters. Using the experimental data obtained from the SG4 500 m2 dish at the ANU, it is possible to select a set of model parameters that produce good agreement between simulated and measured receiver outlet temperatures. It is found that radiation and convection loss coefficients are consistent between experimental runs and do not require repeated calibrations. In contrast, it is found that a parameter modelling average reflectivity on the dish concentrator varies between experimental runs, due to the soiling and cleaning of the concentrator mirrors, and needs to be recalibrated in the model for each run.