近年節能環保意識上升，廢熱回收引起了廣泛的關注，然而低溫廢熱的發電效率仍然存在許多瓶頸。若以化石燃料為能源之直熱式蒸汽動力循環(亞臨界朗肯循環)，直接應用於低溫廢熱發電時，發電效率將受到極大地影響，因此，適合應用於低溫廢熱回收之循環配置至關重要。在本實驗室先前之研究中發現，kW級發電規模以及約230 ℃以下之低溫熱源應用中，增設復熱器之穿臨界二氧化碳朗肯循環效率最高，在特定熱源溫度下，甚至比增設復熱器之穿臨界二氧化碳布累登頓循環效率高出兩倍。因此實驗室持續規劃建立一帶有復熱器的穿臨界二氧化碳朗肯循環發電平台，使用區之低溫廢熱為熱源，並於此篇文獻中成功組建完成，並實現亞/穿臨界二氧化碳朗肯循環發電。又發現特斯拉渦輪相較於傳統式的葉片渦輪機在小發電規模循環中有較出色的表現，因此在本研究中先利用開源的CFD軟體OpenFOAM建立一應用於穿臨界二氧化碳朗肯璇循環的特斯拉渦輪簡化模型。以模擬方式了解穿臨界狀態之二氧化碳於特斯拉渦輪內部流動之狀況，並且釐清各設計參數後從中找出較為關鍵的設計參數，將其無因次化後進行調整及模擬，透過模擬分析後得知適合穿臨界二氧化碳為流體的特斯拉渦輪設計參數。

In recent years, the awareness of energy conservation and environmental protection has risen, and waste heat recovery has attracted widespread attention. However, there are still many bottlenecks in the power generation efficiency of low-temperature waste heat. If the direct heating steam power cycle (subcritical Rankine cycle) using fossil fuels as energy is directly applied to low-temperature waste heat power generation, the power generation efficiency will be greatly affected. Therefore, the cycle configuration suitable for low-temperature waste heat recovery is very important. important. In the previous research of our laboratory, it was found that in kW-level power generation scale and low-temperature heat source applications below about 230 ℃, the efficiency of the transcritical carbon dioxide Rankine cycle with the addition of a recuperator is the highest. The transcritical carbon dioxide Bradenton cycle efficiency of the device is twice as high. Therefore, the laboratory continues to plan and establish a transcritical CO2 Rankine cycle power generation platform with a reheater, using the low-temperature waste heat in the area as a heat source, and successfully completed it in this document, and realized sub/transcritical CO2 Rankine cycle power generation . It is also found that the Tesla turbine has better performance in the small-scale power generation cycle than the traditional blade turbine. Therefore, in this study, the open-source CFD software OpenFOAM is used to establish a system for the transcritical CO2 Rankine cycle. Simplified model of a Tesla turbine. Use simulation to understand the flow of carbon dioxide in the transcritical state inside the Tesla turbine, and after clarifying the design parameters, find out the more critical design parameters, adjust and simulate them after dimensionless, after the simulation analysis Know the Tesla turbine design parameters suitable for transcritical carbon dioxide as fluid.

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