Concentrated solar power (CSP) plants, in the context of thermal energy storage (TES) upgrades, need to provide a timely and effective response to the corrosion process that occurs due to the effect of high temperatures, where one of the main challenges is to control its effect, and thus the costs related to the materials used. Electrochemical impedance spectroscopy (EIS) and linear polarization resistance (LPR) were applied in this study as a corrosion monitoring technique. The electrochemical tests were carried out on the materials AISI304, AISI430, and HR-224 immersed in a mixture of ternary salt composed of 57 wt.% KNO₃ + 13 wt.% NaNO₃ + 30 wt.% LiNO₃ at 550 °C during 100 h of exposure and subsequently compared with solar salt. The test was also carried out on the VM12 alloy in the ternary salt with lithium content at 100 and 1000 h of exposure at 550 °C. The corrosion tests show that the materials conform to a model of protective layer in which the same results were contrasted with the chemical corrosion mechanism of nitrate mixture. According to the results obtained in this research, electrochemical techniques could be an interesting option to control corrosion in CSP plants and reduce operational risks during operation.

One of the most noticeable effects on the loss of performance and capacity of thermal systems is caused by the effect of altitude, which causes the density of a compressible fluid and the atmospheric pressure to be considerably reduced, leading to a reduction of power to electrical and thermal systems. In view of this, lithium-ion battery packs that have forced cooling through a compressible fluid are directly affected by environmental conditions, resulting in the loss of cooling capacity of the system, which affects the performance of the package when it works at large altitude. The objective of this research is to quantify the impact of altitude on sea level in the design of a pack of lithium ion batteries with forced cooling.

Dynamic corrosion tests have been compared in a novel ternary molten salt containing LiNO₃ between a dynamic reactor (using a mechanical stirrer) and a molten salt pilot plant (1 Ton of capacity). Results obtained showed a higher increase in corrosion rate in flow conditions compared with the conventional static conditions and the stirrer reactor.