為建立一小容量可普及化之噴射致冷系統，本論文針對核心的噴射器進行平版化的改良，以建立一吸氣最佳化的設計流程，並進行試作驗證。
設計部分，先以CFD Fluent做數值模擬，使用噴射器理論與阻塞現象驗證模型，再以一維噴射器理論設計噴嘴喉部、出口與等截面積段之面積大小，接續以田口方法的L9直交表配合二維數值模擬作幾何長度與角度之設計，進行幾何最佳化，最後以常壓加熱與真空壓差之參數調整進行吸氣驗證。在試作的部分，以兩壓克力之壓合密封的方式製作平版型噴射器，使用Novec649為工作流體。模擬部分，透過設計流程中的田口試驗方式，在模擬部分可增加16.2%的吸入效率，交互作用影響部分可增加4.7%之效果，而一設計流程可建立平版型噴射器設計基礎。吸入驗證，由於壓力容器無法維持長時間的穩壓，使得量測之數據大多為暫態形式，無法進行有效驗證，僅能證明具有其吸入效果。

In order to establish a generalizable small-capacity ejector refrigerating system, this study aims at optimizing the entrainment rate of the system by re-designing and fabricating the core ejector. The process of designing an optimized core ejector has been constructed, and the design verification test was also employed.

The design processes are as follows. First, construct a simulation model by CFD. Second, use the ejector principle and choke effect to validate the model. Third, design a nozzle throat, a nozzle exit, and cross-sectional area via the one-dimension ejector theory. Furthermore, the Taguchi method (L9 orthogonal array) and two dimensional numerical simulations were employed to optimize the length and angle. Finally, verify the gas entrainment rate under different pressure and temperature settings. In the pilot run, I used two acrylic sheets to fabricate an ejector, and selected Novec 649 as the working fluid.

Through the Taguchi designing process, the suction efficiency of the analog part was increased by 16.2%, and the interaction was increased by 4.7%, while the designing process can be the basis of establishing plate type ejectors.

In the verification section, the data can not be effectively verified because the pressure vessels cannot maintain a stable pressure for sufficient time; therefore, the measured data is in transient form, which can only prove the suction effect.

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