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Abstract
ABSTRACT To tackle energy shortages, the organic Rankine cycle (ORC) is increasingly recognized as an effective approach for waste heat recovery (WHR). Research has shown that cyclopentane-based ORC has the advantages of high efficiency, high cost-effectiveness, particularly for high-to-medium temperature heat sources at 300–500°C. However, due to its flammability and explosive nature, limited research primarily to theoretical studies. This study addresses this research gap and providing important guidance for the application. First, the influence of mass flow rate was investigated. The experiments achieved a maximum simulated output power of 3.75 kW, and a maximum efficiency of 12.5%. Subsequently, an analysis of the effects of varying cold source conditions has been conducted. The experimental results show that the net output power of the system will gradually increase as the mass flow rate of the working fluid increases, but the thermal efficiency exhibits an initial increase followed by a decline. And the lower the condensing pressure, the better the system performance. Based on the experimental results, several practical recommendations for the operation of cyclopentane-based ORC systems are proposed. Additionally, multiple engineering recommendations are provided, offering valuable guidance for the large-scale application of cyclopentane-based ORC systems.
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