Development of Insulation for High Flux Density Receivers

Ebert, Miriam; Arnold, W.H.; Ávila-Marín, Antonio L.; Denk, Thorsten; Hertel, Johannes; Jensch, Andrea; Reinalter, Wolfgang; Schlierbach, Anne; Uhlig, Ralf

doi:10.1016/j.egypro.2015.03.043

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…With increasing requirements for the design of high-temperature point-focusing receivers and reactors, research on the SSR materials is attracting more attention. Based on the operating experiences of a tubular cavity receiver with ceramic fiber fabric cavity wall, Ebert et al conclude that better receiver performance can be achieved by applying surface treatment on the cavity wall materials [28]. Recently, Garrido et al have found that the thermal emissivity (ε) and the solar absorptivity (α) of the cavity wall has a strong influence on the efficiency of a cavity receiver for solar Stirling system [29].…”

Section: Introductionmentioning

confidence: 99%

Solar selective reflector materials: Another option for enhancing the efficiency of the high-temperature solar receivers/reactors

Wang

et al. 2021

Solar Energy Materials and Solar Cells

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Section: Introductionmentioning

confidence: 99%

Solar selective reflector materials: Another option for enhancing the efficiency of the high-temperature solar receivers/reactors

Wang

et al. 2021

Solar Energy Materials and Solar Cells

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“…In order to simulate realistic influx on absorber tubes, the heliostat field is modeled based on an existing layout, namely the field of eSolar's Sierra SunTower for which limited validation data is available [15]. The absorber tubes are modeled with the optical properties of Pyromark 2500 paint [16] and the walls are given an absorption coefficient of 0.3 in the solar spectrum [17]. Assumptions for the geometrical layout that were not varied include that…”

Section: Optical Penetrationmentioning

confidence: 99%

The hybrid pressurized air receiver (HPAR) in the SUNDISC cycle

Heller

Hoffmann

Gauché

2016

AIP Conference Proceedings

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Study and modeling of a pressurized air receiver to power a micro gas turbine AIP Conference Proceedings 1734, 030027 (2016) Abstract. Tubular metallic pressurized air solar receivers face challenges in terms of temperature distribution on the absorber tubes and the limited sustainable solar influx. The HPAR concept aims at mitigating these problems through a macro-volumetric design and a secondary non-pressurized air flow around the absorber elements. Here, a 360• manifestation of this concept for implementation in the dual-pressure SUNDISC cycle is presented. Computationally inexpensive models for the numerous heat flows were developed for use in parametric studies of a receiver's geometric layout. Initial findings are presented on the optical penetration of concentrated solar radiation into the absorber structure, blocking of thermal radiation from hot surfaces and the influence of the flow path through the heated tubes. In the basic design the heat transfer to the non-pressurized air stream is found to be insufficient and possible measures for its improvement are given. Their effect will be examined in more detailed models of external convection and thermal radiation to be able to provide performance estimates of the system.

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Development of Insulation for High Flux Density Receivers

Cited by 2 publications

References 2 publications

Solar selective reflector materials: Another option for enhancing the efficiency of the high-temperature solar receivers/reactors

Solar selective reflector materials: Another option for enhancing the efficiency of the high-temperature solar receivers/reactors

The hybrid pressurized air receiver (HPAR) in the SUNDISC cycle

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