Abstract

This paper discusses the usage of sbpRAY for the optimization of a cavity receiver. New features have been implemented into the program for this purpose. A case study is presented which combines sbpRAY with Rhino and Grasshopper. The example is taken from Next-CSP1, a research project investigating a high temperature solar thermal power plant with a cavity receiver which uses solid particles as heat transfer medium and as a storage material [1]. The influence of several parameters on the output variables is investigated.

Highlights

  • In the field of high temperature receivers of Central Receiver Systems, losses are dominated by IR radiation since it is dependent on temperature to the power of four (T4)

  • The example is taken from Next-CSP1, a research project investigating a high temperature solar thermal power plant with a cavity receiver which uses solid particles as heat transfer medium and as a storage material [1]

  • Gebreiter et al introduced sbpRAY, a tool developed by sbp sonne gmbh, for simulation of heliostat fields and receivers for large scale concentrating solar thermal power (CSP) plants [2]

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Summary

INTRODUCTION

In the field of high temperature receivers of Central Receiver Systems, losses are dominated by IR radiation since it is dependent on temperature to the power of four (T4). All loss parameters need to be considered, the solar field has to be modelled and an efficient aim point strategy (APS) needs to be applied which is challenging This highly complex multi-parameter optimization requires a powerful and very flexible tool. In the scope of this project, a high temperature solar thermal power plant with a cavity receiver was simulated. EXTENDING SBPRAY FOR SIMULATION OF A CAVITY RECEIVER sbpRAY is a raytracing software that enables simulation and design of a concentrating solar thermal power (CSP) plant. Relevant site conditions such as topography and atmospheric conditions can be inserted just like mirror and receiver configurations. The Grasshopper element is activated in the Grasshopper window (a section of this window is visible on the right side of the image) and as a result the oriented heliostats become visible in the Rhino window (on the left side of the image)

OPTIMIZATION OF A CAVITY RECEIVER WITH SBPRAY
PARAMETER STUDIES
Findings
CONCLUSION
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