空調的應用隨處可見，尤其對醫院來說，空調扮演重要的角色，不僅要提供病人與護理人員舒適的醫療環境外，也必須仰賴空調帶走空間中的病菌，以降低內部的病菌濃度。本研究使用CFD逆向方法並搭配實驗量測，探討空調設計中排氣口位置與進氣速度對醫院病房通風系統的影響。實驗方面透過電熱片與鰭片代表空間中的熱源，使鰭片上最高量測溫度維持在一定值，並使用T-type熱電偶量測空間中的溫度；在模擬方面使用CFD逆向方法進行流場的預測，並透過實驗資料驗證模擬結果以提高可信度。此外，透過CFD軟體提供可視化的後處理，探討進氣速度與排氣位置對空間流場的影響。結果指出，在進氣速度為1 m/s時，選擇層流模型會有不錯的預測結果；當進氣速度提高至3 m/s或5 m/s時，RNG k-ɛ紊流模型為最適當的流動模型。在空調設計方面，若上方有排氣口的設計，可以避免空氣在空間內有渦流的產生；反之，沒有排氣口將會產生渦流的情況。而當進氣速度的增加與排氣口位置逐漸遠離進氣口時，皆會帶走空間中更多的熱能且有更好的散熱效果，此可由逆向方法所求電熱片所提供的"Q" 值與模擬軟體所計算鰭片上平均熱傳係數(¯("h" ))進行驗證。

Air conditioning plays an important role in a hospital, not only maintains a comfortable treatment environment for medical staff and patients but also prevents the accumulation of viruses and germs in a ward. In the study, the effect of air conditioning outlet position and air conditioning inlet velocity on the ventilation of the ward is discussed by computational fluid dynamics software (CFD software), inverse method, and experiment. In the experiment, the heater represents the heat source in the space. During the experiment, the highest temperature of measurement on the fin is maintained at 70°C, and the temperature in the space is measured with T-type thermocouples. In the simulation, the CFD inverse method is used to predict the airflow, and the reliability of the simulation is improved by experimental data.
The results indicate that when the inlet velocity is 1 m/s, the laminar flow model will have better prediction results; when the inlet velocity is increased to 3 m/s or 5 m/s, the RNG k-ɛ turbulence model is the most appropriate flow model. In terms of air conditioning design, if there is an air conditioning outlet, it can avoid the vortex in the space; on the contrary, the vortex is generated. As the inlet velocity is increased or the outlet position is gradually moved away from the inlet, it will take away more heat energy in a space. It can be verified by the Q value provided by the heater and the average thermal conductivity coefficient of the fin.

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