This paper presents black box models to represent a LHTESS (Latent Heat Thermal Energy Storage System) coupled with heat pipes, aimed at increasing the storage performance and at decreasing the time of charging/discharging. The presented storage system is part of a micro solar CHP plant and the developed model is intended to be used in the simulation tool of the overall system, thus it has to be accurate but also fast computing. Black box data driven models are considered, trained by means of numerical data obtained from a white box detailed model of the LHTESS and heat pipes system. A year round simulation of the system during its normal operation within the micro solar CHP plant is used as dataset. Then the black box models are trained and finally validated on these data. Results show the need for a black box model that can take into account the different seasonal performance of the LHTESS. In this analysis the best fit was achieved by means of Random Forest models with an accuracy higher than 90%.
|Number of pages||10|
|Journal||IOP Conference Series: Materials Science and Engineering|
|Publication status||Published - 1 Apr 2021|
|Event||19th International Heat Pipe Conference and 13th International Heat Pipe Symposium (IHPC 2018) - Largo Bruno Pontecorvo, 3, Pisa, Italy|
Duration: 10 Jun 2018 → 14 Jun 2018