Solar Dish Collectors for Hydrogen Production: A Review

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:A clear overview of solar dish collector technologies and their efficiency potential for green hydrogen production.

🏢実務担当者:Provides technical comparisons useful for assessing integration options in hydrogen project development.

🏛政策担当者:Highlights the technology readiness and gaps for solar thermochemical hydrogen, informing R&D funding priorities.

Solar‐driven hydrogen production stands at the nexus of the global transition toward net‐zero energy systems. This review surveys the role of solar dish collectors (SDCs) as high‐flux concentrators that can directly or indirectly split water, positioning hydrogen as a long‐duration, carbon‐free energy carrier. After framing the hydrogen spectrum from gray to green, we highlight that approximately 98% of today’s output derives from steam–methane reforming (SMR), underscoring the urgency for solar pathways that eliminate fossil emissions. We first examine thermochemical cycles that convert concentrated heat into chemical bonds. Metal‐oxide and sulfur–iodine (SI) routes already demonstrate single‐reactor water splitting (WS) at 500–2000°C with projected cycle efficiencies approaching 60%, far above the typical 12%–14% of photovoltaic (PV)–electrolysis chains. We then analyze two SDC–electrolysis couplings: high‐temperature solid oxide electrolysis, which exploits both photons and heat, and lower‐temperature proton‐exchange systems assisted by solar–steam generation. Their respective maturity levels, thermal integration options, and part‐load behaviors are contrasted. Beyond stand‐alone hydrogen, we review multigeneration concepts, where a single SDC platform coproduces hydrogen, electricity, freshwater, and ancillary products. While such architectures can enhance exergetic utilization, we caution that added complexity often erodes reliability and inflates capital expense. Finally, we identify research priorities across the “materials–integration–economics” trilemma: durable redox materials, advanced thermal management to curb radiative losses, streamlined balance‐of‐plant design, and technoeconomic methodologies that bridge laboratory promise with bankable deployment. By synthesizing progress and pitfalls across disciplines, the review provides a road map for transforming concentrated solar power (CSP) from a niche laboratory curiosity into a scalable engine for the green hydrogen economy.

• semanticscholar https://doi.org/10.1155/er/9972558first seen 2026-05-17 07:42:24 · last seen 2026-05-20 05:28:12