Influence of the heat transfer fluid in a CSP plant molten salts charging process
MetadataShow full item record
The selection of a proper heat transfer fluid (HTF) is a key factor to increase the efficiency of concentrated solar power plants and therefore, to reduce their internal associated CAPEX (capital expenditures of developing and constructing a plant, excluding any grid-connection charges) and OPEX (operating expenditures from the first year of a project's operation). This paper presents a comparative study of two commercial HTF which are widely used in different industries and CSP plants: thermal oil Therminol VP-1 and silicone fluid Syltherm 800. First, the authors theoretically studied the properties of both HTF based on the data given by the manufactures. Afterwards, the authors experimentally perform the comparison in a two-tank molten salt thermal energy storage pilot plant built at the University of Lleida (Spain). The study is focused on the plate heat exchanger of the facility during several charging processes with a counter flow arrangement. Results from both studies showed that, for the same working conditions, Therminol VP-1 is the best candidate for the above-mentioned purposes due to its higher heat transfer, lower thermal losses and lower power consumption associated to the HTF pump. However, it presents problems a low crystallization point, which should also be considered.
Is part ofRenewable Energy, 2017, vol. 113, p. 148–158
European research projects
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Experimental analysis of charging and discharging processes, with parallel and counter flow arrangements, in a molten salts high temperature pilot plant scale setup Peiró Bell-lloch, Gerard; Gasia, Jaume; Miró, Laia; Prieto, Cristina; Cabeza, Luisa F. (Elsevier, 2016)Despite the fact that there are some commercial concentrated solar power plants worldwide, there is currently a lack of experimental reports about the operational characteristics of this type of plants. Therefore, a two-tank ...
Two-tank molten salts thermal energy storage system for solar power plants at pilot plant scale: Lessons learnt and recommendations for its design, start-up and operation Peiró Bell-lloch, Gerard; Prieto, Cristina; Gasia, Jaume; Jové, Aleix; Miró, Laia; Cabeza, Luisa F. (Elsevier, 2018)Renewable energies are main players to ensure the long-term energy supply. Solar power plants with thermal energy storage (TES) are one of the available renewable technologies which have more potential. Nowadays, there are ...
Prieto, Cristina; Miró, Laia; Peiró Bell-lloch, Gerard; Oró Prim, Eduard; Gil, Antoni; Cabeza, Luisa F. (Elsevier, 2016)Solar power plants have been deployed in the last 20 years, so the interest in evaluating their performance is growing more and more. In these facilities, thermal energy storage is used to increase dispatchability of power. ...