A brief review of liquid heat transfer materials used in concentrated solar power systems and thermal energy storage devices of concentrated solar power systems

Abstract

Solar power generation is an effective approach to promote the achievement of carbon neutrality. Heat transfer materials (HTMs) are important for concentrated solar power (CSP) systems and their accessary thermal energy storage (TES) devices. The performances of HTMs can influence the operation behaviors of CSP systems and TES devices. On the whole, the HTMs can be divided into three categories according to their physical states, which are the liquid, gaseous, and solid HTMs, respectively. This article presents a brief review of research works on liquid HTMs used in CSP systems and TES devices of CSP systems, mainly including different kinds of molten salts, heat transfer oils, nanofluids, liquid metals, and water. Some typical practical applications, experimental and simulation studies on different kinds of liquid HTMs used in CSP and TES systems are introduced, and the advantages, disadvantages, and further research and development work prospects of different kinds of HTMs are briefly summarized. This article aims to providing a reference for researchers in solar thermal power field.

Failure analysis of copper substrate crack in high-voltage power supply

“…Compared with the organic substrate, the copper substrate has high thermal conductivity, high mechanical strength, good processing performance, and has been widely used in military and aerospace fields [4][5][6]. Due to the high thermal resistance when directly installing the copper substrate and casing, thermal interface materials (e.g., thermally conductive gel) are usually applied between the copper substrate and casing to reduce the interfacial thermal resistance [7,8]. At present, more researches on the copper substrate focus on processing methods [9,10], etc., and there are few studies on the failure of copper substrates used in electronic equipment.…”

Effect Evaluation of Filling Medium Parameters on Operating and Mechanical Performances of Liquid Heavy Metal Heat Storage Tank

“…Based on different solid heat storage materials, heat storage methods can be divided into the following three types: chemical, sensible, and latent heat storage technologies, where sensible heat storage is more mature and widely used. Potential HTFs for TES systems mainly include molten salts, heat transfer oils, liquid metals, and water (see Table 1) [1]. Researchers have conducted many studies on single-tank heat storage technologies.…”