Heat transfer fluids for concentrating solar power systems – A review. (15th May 2015)

• Record Type: Journal Article
• Authors: Vignarooban, K.; Xu, Xinhai; Arvay, A.; Hsu, K.; Kannan, A.M.
• Is Part Of: Applied energy. Volume 146(2015:May 15)
• Page Start: 383
• Page End: 396
• Publication Date: 2015-05-15
• Subjects: Concentrating solar power -- Heat transfer fluids -- Thermal energy storage -- Molten salts -- High temperature corrosion; Power (Mechanics) -- Periodicals; Energy conservation -- Periodicals; Energy conversion -- Periodicals; 621.042
• DOI: 10.1016/j.apenergy.2015.01.125
• Languages: English
• ISSNs: 0306-2619

Abstract

Graphical abstract: Highlights: This study deals with liquid metals, molten salts and other heat transfer fluids. Molten salts show advantages in operating conditions up to 800 °C. Temperature range, viscosity, thermal conductivity and corrosion etc. are discussed. Abstract: There is a strong motivation to explore the possibility of harnessing solar thermal energy around the world, especially in locations with temperate weather. This review discusses the current status of heat transfer fluid, which is one of the critical components for storing and transferring thermal energy in concentrating solar power systems. Various types of heat transfer fluids including air, water/steam, thermal oils, organic fluids, molten-salts and liquid metals are reviewed in detail, particularly regarding the melting temperature, thermal stability limit and corrosion issues. Stainless steels and nickel based alloys are the typical piping and container materials for heat transfer fluids. Stability of the stainless steels and alloys while in contact with heat transfer fluids is very important for the longevity of concentrating solar power systems. Corrosion properties of stainless steels and nickel based alloys in different heat transfer fluids are discussed in terms of corrosion rates.