Abstract The aim of this paper is to study a new modular micro-scale trigeneration system based on a rotary Fresnel collector, named “SunDial”, under a restricted design space. This system is based on the integration of an organic Rankine cycle with a vapor compression heat pump using miniaturized turbomachinery. Four layouts areoed to maximize the energy supply according to different heat management strategies, as requested by potential end-users. In addition, a working fluid screening is carried out which has lead to the selection of two candidates: isobutane and propane. A consistent system performance metric has been defined in order to coherently asses the configurations conceived. Different degrees of integration between the power cycle and the heat pump are analyzed. The influence of power, heating and cooling supply on the global metrics are studied for each design. Finally, an energy flow sizing is presented for a 15 kWth solar thermal input SunDial module applied to different industrial end-users. Results show that isobutane is preferable when high shares of heating and cooling are required, whereas propane leads to higher power outputs.

中文翻译：

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新型旋转式太阳能菲涅耳集热器的模块化微型三联产系统：设计空间分析

摘要 本文的目的是在有限的设计空间下研究一种基于旋转菲涅耳收集器的新型模块化微型三联产系统，名为“SunDial”。该系统基于有机朗肯循环与使用微型涡轮机械的蒸汽压缩热泵的集成。根据潜在最终用户的要求，根据不同的热管理策略设计了四种布局，以最大限度地提高能源供应。此外，还进行了工作流体筛选，这导致选择了两个候选者：异丁烷和丙烷。定义了一致的系统性能指标，以便连贯地评估构想的配置。分析了动力循环和热泵之间不同程度的集成。权力的影响，研究了每个设计的全球指标的加热和冷却供应。最后，介绍了适用于不同工业最终用户的 15 kWth 太阳能热输入 SunDial 模块的能量流大小。结果表明，当需要高份额的加热和冷却时，异丁烷是首选，而丙烷会导致更高的功率输出。