Work

Design, construction and operation of a particle-driven CSP conveyance loop: attrition, erosion, and thermal performance aspects

Year: 2025

Type: article

Abstract: This study presents a novel particle-driven Concentrated Solar Power (CSP) system, focusing on the design and operation of its dense-phase particle conveyance loop. Contrary to well-documented lean-phase conveying, the dense-phase mode significantly reduces heat losses and particle velocity, thereby mitigating attrition and erosion. Through experimental analysis and engineering modeling, we demonstrate the feasibility of vertically conveying 16 t/h of olivine particles within a 0.20 m diameter riser over 90 m height, achieving a specific energy consumption of 0.35 kW/ton-53% lower than conventional bucket elevators. Key findings include a remarkably low particle attrition rate (<0.1% per cycle) and an extrapolated component lifespan of 16-24 years for selected materials (AISI 410/304 for risers/screw conveyors at ∼ 300 °C and AISI 310 for the down-comer at > 600 °C). Thermal modeling confirms that overall heat losses can be maintained below 3% via optimized heat recovery. This work provides critical insights and validated design principles for efficient and durable particle-based CSP systems.

Source: Results in Engineering

DOI: 10.1016/j.rineng.2025.108532

Authors: Yimin Deng, Alex Le Gal, Emmanuel Guillot, Gilles Flamant, Jan Baeyens

Institutions: Beijing Institute of Technology, Centre National de la Recherche Scientifique, Laboratoire Procédés, Matériaux et Energie Solaire

Language: English

Topic: Solar Thermal and Photovoltaic Systems

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure, Responsible consumption and production, Climate action

Open Access status: gold

Estimated APC paid: $1,940