Next Article in Journal
An Evaluation of the Economic and Resilience Benefits of a Microgrid in Northampton, Massachusetts
Previous Article in Journal
A Local Protection and Local Action Strategy of DC Grid Fault Protection
Previous Article in Special Issue
Hybrid Microencapsulated Phase-Change Material and Carbon Nanotube Suspensions toward Solar Energy Conversion and Storage
Open AccessArticle

Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers

1
Processes, Materials and Solar Energy Laboratory, PROMES-CNRS, 7, rue du Four Solaire, 66120 Font-Romeu, France
2
PROMES-CNRS Laboratory, Engineering Science department, University of Perpignan (UPVD), Tecnosud, Rambla de la Thermodynamique, 66100 Perpignan, France
*
Author to whom correspondence should be addressed.
Energies 2020, 13(18), 4803; https://doi.org/10.3390/en13184803
Received: 30 July 2020 / Revised: 9 September 2020 / Accepted: 10 September 2020 / Published: 14 September 2020
(This article belongs to the Special Issue Solar Thermal Energy Conversion and Storage)
High temperature solar receivers are developed in the context of the Gen3 solar thermal power plants, in order to power high efficiency heat-to-electricity cycles. Since particle technology collects and stores high temperature solar heat, CNRS (French National Center for Scientific Research) develops an original technology using fluidized particles as HTF (heat transfer fluid). The targeted particle temperature is around 750 °C, and the walls of the receiver tubes, reach high working temperatures, which impose the design of a cavity receiver to limit the radiative losses. Therefore, the objective of this work is to explore the cavity shape effect on the absorber performances. Geometrical parameters are defined to parametrize the design. The size and shape of the cavity, the aperture-to-absorber distance and its tilt angle. A thermal model of a 50 MW hemi-cylindrical tubular receiver, closed by refractory panels, is developed, which accounts for radiation and convection losses. Parameter ranges that reach a thermal efficiency of at least 85% are explored. This sensitivity analysis allows the definition of cavity shape and dimensions to reach the targeted efficiency. For an aperture-to-absorber distance of 9 m, the 85% efficiency is obtained for aperture areas equal or less than 20 m2 and 25 m2 for high, and low convection losses, respectively. View Full-Text
Keywords: concentrated solar power; solar power tower; cavity solar receiver; shape optimization; particle technology; high temperature; thermal efficiency; sensitivity analysis concentrated solar power; solar power tower; cavity solar receiver; shape optimization; particle technology; high temperature; thermal efficiency; sensitivity analysis
Show Figures

Graphical abstract

MDPI and ACS Style

Gueguen, R.; Grange, B.; Bataille, F.; Mer, S.; Flamant, G. Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers. Energies 2020, 13, 4803.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop