Devon Kesseli
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3D-Shape Measurement of Parabolic Trough Mirror Panels: Open
The 3D-shape round-robin initiative aims to compare the main geometric parameters of 3D shape measurements for parabolic-trough mirror panels, assessed using equipment developed and employed by each participating institution: ENEA, F-ISE, …
Improvements in Optical Surface Measurement Using Reflected Computer Vision Targets Open
Since 2021, NREL has been developing a system to measure heliostats by measuring the deflection of printed computer vision targets, called the Reflected Target Non-intrusive Assessment (ReTNA) [6], [7]. While this system will have lower re…
View article: Heliostat Consortium Annual Report: 2024
Heliostat Consortium Annual Report: 2024 Open
In 2021, the U.S. Department of Energy's (DOE's) Solar Energy Technologies Office (SETO) funded the formation of the Heliostat Consortium (HelioCon), a five-year consortium designed to advance U.S. heliostat technologies by engaging indust…
Demonstration and Automation of Reflected Target Optical Measurement for Heliostats Open
Accurate optical surfaces are a primary driver of concentrated solar power plant performance. Errors in pointing and tracking mirrors, the canting of individual mirror facets, and the surface slope of the mirror itself can be caused by err…
RePED 250: Manufacturing and Market Analysis of High-Temperature Alternators Open
The novel repetitive pulsed electric drill 250 (RePED 250) has the potential to greatly lower the costs and drilling times of geothermal projects. This tool discharges electric pulses through hard rock formations, shattering the rock in te…
Preliminary Results of the 3D-shape Round-Robin Open
In the framework of SFERA-III WP10 Task3, ENEA has organized the 3D-shape round-robin (RR); the purpose is to compare the main geometrical parameters of 3D shape measurement of parabolic-trough (PT) reflective panels evaluated with the ins…
Reflected Target Non-Intrusive Assessment (ReTNA): Stage 1 Results Open
This presentation looks at the objective of ReTNA which is to create a highly adaptable heliostat and trough measurement system for laboratory and assembly line.
A New Reflected Target Optical Assessment System Open
NREL has completed stage 1 development of an indoor optical measurement tool for fully assembled heliostats and single facets. This tool began as an indoor version of NREL’s outdoor Non-Intrusive Optical (NIO) measurement technique [1]. It…
View article: Heliostat Consortium Annual Report: 2023
Heliostat Consortium Annual Report: 2023 Open
The Heliostat Consortium for Concentrating Solar-Thermal Power (HelioCon) began in 2021, funded by the U.S. Department of Energy's Solar Energy Technologies Office to advance U.S. heliostat technologies over the next five years. This repor…
Improvements in Reflected Target Non-intrusive Assessment (ReTNA) Open
Accurate optical surfaces are a primary driver of concentrated solar power plant performance. Errors in pointing and tracking mirrors, the canting of individual mirror facets, and the surface slope of the mirror itself can be caused by err…
A New Reflected Target Optical Assessment System - Stage 1 Development Results: Preprint Open
NREL has completed stage 1 development of an indoor optical measurement tool for fully assembled heliostats and single facets. This tool began as an indoor version of NREL's NIO technique. It uses similar techniques to other available tool…
BCS (CSP Beam Characterization System) [SWR-23-13] Open
The Beam Characterization System (BCS) is an image-processing tool for estimating heliostat tracking errors. A large mirror, or heliostat, reflects the sun onto a distant target. A carefully calibrated camera then takes an image of this ta…
Evaluating the feasibility of geothermal deep direct-use in the United States Open
This paper investigates the techno-economic feasibility of geothermal deep direct-use for heating, cooling, and thermal energy storage in the United States. The six 2017–2019 deep direct-use projects funded by the U.S. Department of Energy…
CSP Systems Analysis - Final Project Report Open
The CSP Systems Analysis project was a three-year effort supporting the Concentrating Solar Power (CSP) Subprogram within the Solar Energy Technologies Office of the U.S. Department of Energy (DOE). The goal of the CSP Systems Analysis pro…
CSP-plant modeling guidelines and compliance of the system advisor model (SAM) Open
Accurately modeling risks, costs, and electricity output is essential to the financing and advancement of concentrating solar power projects. To address this need, a group of CSP experts created a guideline document, titled SolarPACES Guid…
CSP-Plant Modeling Guidelines and Compliance of the System Advisor Model (SAM): Preprint Open
Accurately modeling risks, costs, and electricity output is essential to the financing and advancement of concentrating solar power projects. To address this need, a group of CSP experts created a guideline document, titled SolarPACES Guid…
High-Efficiency Low-Cost Solar Receiver for Use Ina a Supercritical CO<sub>2</sub> Recompression Cycle Open
This project has performed solar receiver designs for two supercritical carbon dioxide (sCO2) power cycles. The first half of the program focused on a nominally 2 MWe power cycle, with a receiver designed for test at the Sandia Solar Therm…