Effects assessment of 10 functioning years on the main components of the molten salt PCS experimental facility of ENEA

Walter Gaggioli, Primo Di Ascenzi, Luca Rinaldi, Pietro Tarquini, Fabrizio Fabrizi

Research output: Contribution to conferencePaper

3 Citations (Scopus)

Abstract

In the frame of the Solar Thermodynamic Laboratory, ENEA has improved CSP Parabolic Trough technologies by adopting new advanced solutions for linear tube receivers and by implementing a binary mixture of molten salt (60% NaNO3and 40% KNO3) [1] as both heat transfer fluid and heat storage medium in solar field and in storage tanks, thus allowing the solar plants to operate at high temperatures up to 550°C. Further improvements have regarded parabolic mirror collectors, piping and process instrumentation. All the innovative components developed by ENEA, together with other standard parts of the plant, have been tested and qualified under actual solar operating conditions on the PCS experimental facility at the ENEA Casaccia Research Center in Rome (Italy). The PCS (Prova Collettori Solari, i.e. Test of Solar Collectors) facility is the main testing loop built by ENEA and it is unique in the world for what concerns the high operating temperature and the fluid used (mixture of molten salt). It consists in one line of parabolic trough collectors (test section of 100 m long life-size solar collectors) using, as heat transfer fluid, the aforesaid binary mixture of molten salt up to 10 bar, at high temperature in the range 270° and 550°C and a flow rate up to 6.5 kg/s. It has been working since early 2004 [2] till now; it consists in a unique closed loop, and it is totally instrumented. In this paper the effects of over ten years qualification tests on the pressurized tank will be presented, together with the characterization of the thermal losses of the piping of the molten salt circuit, and some observations performed on the PCS facility during its first ten years of operation.
Original languageEnglish
DOIs
Publication statusPublished - 31 May 2016
Event21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015 - Cape Town, South Africa
Duration: 31 May 2016 → …

Conference

Conference21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015
CountrySouth Africa
CityCape Town
Period31/5/16 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Gaggioli, W., Di Ascenzi, P., Rinaldi, L., Tarquini, P., & Fabrizi, F. (2016). Effects assessment of 10 functioning years on the main components of the molten salt PCS experimental facility of ENEA. Paper presented at 21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015, Cape Town, South Africa. https://doi.org/10.1063/1.4949156