Boundary Conditions and Natural Temperature Decay From Experimental Data Analysis to On-Design of a Tank for CSP Plant – Part 2
Abstract
Translating real boundary conditions in a simulated 2D environment aids to control the performances of a tank prone to store energy. In particular, the ullage has been investigated along a natural decay of temperature since it is a significant observed heat loss along the dome. Whether the tank is prone to store energy along a stand-by phase, during O&M or even in operation, it can affect the performance, maintenance upgrading plans. Experimental data campaigns conducted since 2004 as well as experimental campaigns between 2020 and 2021 have been used to model a lumped-circuit abstraction to focus on heat losses from the upper dome. Those values have been investigated to find a physical law of tank-insulation aging (Angelillo et al., 2021). Under a set of imposed assumptions, a setup of simulation has been used such aid tools to identify a temperature coefficient to visualize the variations of tank performance. Results of data analysis show the characterizing value for tank aging. Therefore, according to a simulated lumped-circuit scheme in OpenModelica in a previous study, has found out key values for more comprehensive energy 2D simulation. Particularly, the lumped-circuit scheme has been used to find the involved thermocouples and translate this accuracy into a temperature coefficient among others. Hence, a set-up of model has been presented to how control it. The novelty of study is based on the opportunity to match a tank design and monitor it along operational phase in no-adiabatic conditions, namely approximately to real conditions.
Keywords
Lumped-circuit, Tank, Storage, O&m