Journal of Solar Energy Engineering: Recent submissions
Now showing items 61-80 of 3017
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Closed-Loop Pointing Feedback for Heliostats in Concentrating Solar Power
(The American Society of Mechanical Engineers (ASME), 2024)Concentrating solar power (CSP) facilities need to ensure alignment of all sun-tracking heliostats onto the sunlight receiver. A method is proposed to keep all heliostats in a CSP facility under closed-loop pointing control ... -
Evaluation of Composite Structural Materials for Heliostat Cost Reduction
(The American Society of Mechanical Engineers (ASME), 2024)Structures manufactured from steel comprise up to 40% of a concentrating solar thermal power (CSP) heliostat's cost. Composite structures represent a potential opportunity to reduce this cost. A reference heliostat structural ... -
HelioPoint – A Fast Airborne Calibration Method for Heliostat Fields
(The American Society of Mechanical Engineers (ASME), 2024)The pointing calibration of a newly built heliostat field can take up to several years. The state-of-the-art method typically used is accurate but slow. A faster method could reduce the commissioning time and therefore ... -
Status Quo and Gap Analysis of Heliostat Field Deployment Processes for Concentrating Solar Tower Plants
(The American Society of Mechanical Engineers (ASME), 2024)Deployment of the solar field of a concentrating solar power plant is one of many factors that are integral to the success of a project. Knowledge transfer from outside the industry is limited due to the unique nature of ... -
Laboratory Demonstration of Grating Embedded Mirrors for Single-Shot Heliostat Optical Metrology
(The American Society of Mechanical Engineers (ASME), 2024)Concentrated solar power (CSP) plants need to monitor the surface slope error of thousands of heliostats with sub-milliradian accuracy. Large numbers of heliostats installed in harsh environments mean that measurement speed ... -
Analysis of Gaps in Techno-Economic Analysis to Advance Heliostat Technologies for Concentrating Solar-Thermal Power
(The American Society of Mechanical Engineers (ASME), 2024)The Heliostat Consortium (HelioCon) was launched in 2021 to advance heliostat technology. One of its first efforts was to do a detailed analysis of gaps in technology and capabilities in the heliostat industry and complete ... -
Heliostat Consortium: Gap Analysis on State of the Art in Wind Load Design
(The American Society of Mechanical Engineers (ASME), 2024)Wind loads are a major driver of heliostat cost. Standardized methods and tools are needed for a more detailed understanding of the static and dynamic loads of a heliostat design. This will enable cost reduction of ... -
Energetic and Exergetic Analyses of a Double-Pass Tubular Absorber for Application in Solar Towers
(The American Society of Mechanical Engineers (ASME), 2024)The present research integrates the concept of double-pass (DP) flows with high-temperature solar receivers to introduce an innovative design aimed at minimizing heat losses and optimizing performance. The new DP system ... -
A Waste Heat Assessment of a Manufacturing Facility With Consideration for Demand Matching Through Thermal Energy Storage
(The American Society of Mechanical Engineers (ASME), 2024)A waste heat assessment of a manufacturing facility was conducted. A physical survey identified potential waste heat sources. For these sources, the temporal fluctuations in temperature and flowrate, and the frequency of ... -
Modeling Development of a Receiver–Reactor of Type R2Mx for Thermochemical Water Splitting1
(The American Society of Mechanical Engineers (ASME), 2024)This work reports on the development of a transient heat transfer model for a prototype reactor of type R2Mx for thermochemical water splitting by temperature and pressure swing of ceria. Key aspects of the R2Mx concept, ... -
Pathways Toward Improving the Energy Efficiency of Residential Air-Conditioning Systems in Saudi Arabia
(The American Society of Mechanical Engineers (ASME), 2024)In Saudi Arabia, the residential electricity consumption approaches 50%, primarily driven by air conditioners (AC). This study explores the potential energy savings and carbon dioxide (CO2) emission reductions up to 2030 ... -
Thermodynamic Performance Investigation of Environmentally Friendly Working Fluids in a Geothermal Integrated Pumped Thermal Energy Storage System
(The American Society of Mechanical Engineers (ASME), 2024)Among the available energy storage technologies, pumped thermal energy storage (PTES) is emerging as a potential solution for large-scale electrical energy storage with high round-trip efficiencies and no geographical ... -
Modeling and Optimization of a Phase Change Material-Based Ocean Thermal Energy Harvester for Powering Uncrewed Underwater Vehicles
(The American Society of Mechanical Engineers (ASME), 2024)As oceans cover over 70% of the planet's surface, they represent a large reservoir of resources that remain vastly untapped. Uncrewed underwater vehicles (UUVs) are becoming a key technology for ocean exploration. Ocean ... -
Heat and Mass Transfer Model for a Counter-Flow Moving Packed-Bed Oxidation Reactor/Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 2024)Particle-based thermochemical energy storage (TCES) through metal oxide redox cycling is advantageous compared to traditional sensible and latent heat storage (SHS and LHS) due to its higher operating temperature and energy ... -
Two-Fluid and Discrete Element Modeling of a Parallel Plate Fluidized Bed Heat Exchanger for Concentrating Solar Power
(The American Society of Mechanical Engineers (ASME), 2024)A novel high-temperature particle solar receiver is developed using a light trapping planar cavity configuration. As particles fall through the cavity, the concentrated solar radiation warms the boundaries of the receiver ... -
Fungible, Multiyear Solar Thermochemical Energy Storage Demonstrated via the Cobalt Oxide Cycle1
(The American Society of Mechanical Engineers (ASME), 2024)We present a proof of concept demonstration of solar thermochemical energy storage on a multiple year time scale. The storage is fungible and can take the form of process heat or hydrogen. We designed and fabricated a 4-kW ... -
Techno-Economic Analysis of Using Reversible Turbomachinery for Pumped Thermal Energy Storage Systems
(The American Society of Mechanical Engineers (ASME), 2024)The objective of this paper is to assess the techno-economic performance of different cycle configurations for pumped thermal energy storage (PTES), including the effects of charging electricity costs. Reversible turbomachinery ... -
Effects of an Annular Baffle on Heat Transfer to an Immersed Coil Heat Exchanger in Thermally Stratified Tanks
(The American Society of Mechanical Engineers (ASME), 2024)The effect of a cylindrical baffle on heat transfer to an immersed heat exchanger is investigated in initially thermally stratified tanks. The heat exchanger is located in the annular region created by the baffle and the ... -
Special Issue on the 17th Annual International Conference on Energy Sustainability (ES2023)
(The American Society of Mechanical Engineers (ASME), 2024)This Special Issue of the ASME Journal of Solar Energy Engineering highlights the breadth and depth of research presented at the 17th Annual International Conference on Energy Sustainability, held in Washington, DC in the ... -
The Application of a Non-Intrusive Methodology to Estimate Particle Egress Rate and Advective Heat Losses of a Falling Particle Receiver During On-Sun Tests
(The American Society of Mechanical Engineers (ASME), 2024)The direct measurement of particle temperatures and advective losses from solid particle receiver has been a topic of necessary interest to de-risk the technology and improve its performance. Due to the flow's transient ...