Development of a tube receiver for a solar-hybrid microturbine system
Development of a tube receiver for a solar-hybrid microturbine system
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发表时间：
2008-03
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通讯作者：
L. Amsbeck;R. Buck;P. Heller;Jens Jedamski;R. Uhlig
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作者：
L. Amsbeck;R. Buck;P. Heller;Jens Jedamski;R. Uhlig
具有热电联产功能的太阳能混合微型涡轮机系统为发电、供热或空调提供了新的可能性。太阳能接收器是此类系统的重要组成部分。对于原型系统演示项目，目前正在开发用于 100kWe 微型涡轮机系统的管式接收器。接收器设计用于在 4.5 barab 压力下将空气预热至 800°C。设计的挑战是在高效率、低压降、高耐用性和低成本之间找到正确的折衷方案。接收器由多个金属管组成，排列在空腔中并并联连接。设计时需要了解局部磁通密度、流体和材料温度。有限元程序与光线追踪器相结合用于布局。描述了最终的接收器设计，该设计在效率、材料温度和压降方面进行了优化。将提供标称负载和非设计条件的预期性能数据，包括预期的年度接收器和系统性能。此外，还将概述未来改进的几种可能性。
Solar-hybrid microturbine systems with cogeneration offer new possibilities for the generation of electricity and heat or air conditioning. The solar receiver is an important component of such a system. For a prototype system demo project a tube receiver for a 100kWe microturbine system is currently under development. The receiver is designed for air preheating up to 800°C at a pressure of 4.5 barabs. The challenge of the design is to find the right compromise between high efficiency, low pressure drop, high durability and low cost. The receiver consists of multiple metallic tubes, arranged in a cavity and connected in parallel. For the design the knowledge of local flux density, fluid and material temperature is required. A finite-element program coupled with a ray tracer was used for the layout. The final receiver design is described, which was optimized with respect to efficiency, material temperatures and pressure drop. Expected performance data for nominal load and off-design conditions will be presented, including the expected annual receiver and system performance. In addition, several possibilities for future improvements will be outlined.