NDLI: Application of Microscale Devices for Megawatt Scale Concentrating Solar Power Plants

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Kyle, R. Zada Drost, M. Kevin Brian, M. Fronk
Copyright Year	2015
Abstract	Concentrated solar power (CSP) plants have the potential to reduce the consumption of non-renewable resources and greenhouse gas emissions in electricity production. In CSP systems, a field of heliostats focuses solar radiation on a central receiver, which is ultimately transferred to thermal electrical power plant at high temperature. However, the maximum receiver surface fluxes are low (30–100 W cm−2) with high thermal losses, which has limited the market penetration of CSP systems. Recently, small (∼ 4 cm2), laminated micro-channel devices have shown potential to achieve concentrated surface fluxes over 100 W cm−2 using supercritical CO2 as the working fluid. The present study explores the feasibility of using these microscale devices as building blocks for a megawatt scale (250 MW thermal) open solar receiver. This allows for a modular design of the central receiver with non-standard shapes customized to the heliostat field. The results show that the microscale unit-cells have the potential to be scaled to megawatt applications while providing high heat flux and thermal efficiency. At the design incident flux and surface emissivity, a global receiver thermal efficiency of > 90% can be achieved.
File Format	PDF
ISBN	9780791857502
DOI	10.1115/IMECE2015-52529
Volume Number	Volume 8B: Heat Transfer and Thermal Engineering
Conference Proceedings	ASME 2015 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2015-11-13
Publisher Place	Houston, Texas, USA
Access Restriction	Subscribed
Subject Keyword	Microscale devices High temperature Electricity (physics) Heat flux Emissions Microchannels Design Blocks (building materials) Emissivity Fluids Supercritical carbon dioxide Concentrating solar power Solar energy Flux (metallurgy) Thermal efficiency Shapes Solar radiation
Content Type	Text
Resource Type	Article

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