Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 157, Issue -, Pages 526-532Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2016.07.027
Keywords
Corrosion; Dynamic Gravimetric Analysis (DGA); ASTM G1-03; Thermal energy storage (TES); Molten salts; Sensible heat
Funding
- Spanish government [IDI-20090393, 2008-1005, ENE2011-22722]
- European Union's Seventh Framework Programme (FP7) [PIRSES-GA-2013-610692]
- European Union's Horizon research and innovation programme [657466]
Ask authors/readers for more resources
When a system for thermal energy storage (TES) is designed, many factors must be considered: storage time, dimensions, material to store heat, etc. Usually, molten salts are selected as TES materials because of their great thermal properties at high temperatures. When the whole TES system is going to be built, the material to be used for containing the thermal storage material becomes an important issue. It must have proper mechanical properties, withstand high temperatures and, above all, resist corrosion due to storage material, being in most of the cases, highly corrosive molten salt mixtures. To determine the corrosion on a metal plate, ASTM Standard-G1-03 procedure is usually applied, in which the corroded metal sample is submitted to several cycles including: attack by a chemical solution, washing, cleaning, drying, and weighing. In order to minimise the handling of the sample, a new methodology (Dynamic Gravimetric Analysis, DGA) has been developed and used to determine the corrosion produced in carbon steel A516Gr70 samples induced by different salt mixtures commonly used as molten salts containing different amounts of chloride, at working temperatures conditions. The results show that the higher is the content of chloride in molten salts the greater is the steel loss produced by corrosion and makes the corrosive kinetics to be highly increased when it is overtaken. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available