太陽能產業隨著再生能源的風潮而起，隨著全球政府的支持以及企業積極擴展產能等等因素，使太陽光電產業長久以來有供過於求的現象，導致利潤下降且競爭激烈，面臨環境競爭與國際化的壓力，企業朝向低成本、高品質、高彈性與交期短等目標持續改善，企業也傾向導入單元工程來降低生產成本與增加製造彈性以提升產業競爭力。
本研究以太陽能電池廠為實例，將單元工程的概念應用於廠房佈置，產生出合適且實務可行的設施佈置方案，讓管理者，在進行廠房佈置的執行時，有一參考之依據。
首先以現況價值流圖找出浪費所在，以此作為改善之契機，並導入單元工程概念改變設施佈置，提出單元工程設計方案，並透過多層面的設施佈置考量，將定性與定量指標作為評估方案之依據，並透過模擬工具求得定性指標之結果，亦透過專家意見評估各方案在定性指標上之表現。結合專家意見與實驗結果，以層級分析法結合理想解類似度順序偏好法進行方案評選，找出最佳佈置方案
經過結果比較與分析，在考慮單元工程概念改變設施佈置的情況下，方案四可使Cycle Time從2178分縮短至1967分，改善百分比為9.69%，WIP數量亦有18.17%的改善。本研究亦針對單元工程生產之優點，以小批量、連續流的概念，在考慮改變投料間隔時間與縮小搬運批量下，Cycle Time可縮短至1346分，改善幅度為38.20%。由此可看出，導入單元工程及精實管理概念，確實可有效縮短Cycle Time，在更短時間內滿足顧客需求，提升系統績效。

Solar energy industry had been well developed with the growing attention of renewable energy sources. However, due to the governments’ fully support and aggressive business expansion worldwide, the supply has gradually exceeded the demand, which causes a serious competition in market and thus profit drops. Under the great pressure from the more competitive market and internationalization, enterprises all have been trying to drive productivity with lower cost, enhance the quality, increase the flexibility and shorten the delivery time. Cellular manufacturing is one of the approaches used to enhance the core competence.
An empirical study is conducted to a solar cell manufacturer. Try to employ the concept of cellular manufacturing to the layout arrangement, and then, with the evaluation from different aspects, generate a feasible proposal considering different characteristics and restrictions of production line. This study provides a reference solution of layout plan which shows better performance indices in a manufacturing system.
First of all, value stream mapping is used here to find out the waste in the system, which gives a guideline for productivity improvement, and then we could propose re-layout using cellular manufacturing. These cellular-manufacturing alternatives are developed from different aspects, and they’re evaluated by the criteria of quantitative and qualitative. The quantitative indices performances can be calculated by simulation model. Next, for qualitative indices, we use analytic hierarchy process (AHP) which extract experts’ opinions and quantifies the qualitative indices. We employ Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) to evaluate the alternatives and find the best one.
According to the results, if the re-layout proposal of alternative4 is applied to real setting, the cycle time will be reduced from 2,178 min. to 1,967 min. (9.68% reduction). WIP level is also reduced around 18.17%. In addition, if both time interval of feeding and the batch size are also adjustable, the cycle time will be reduced more to 1,346 min. (38.20% reduction). The empirical results show that the application of cellular manufacturing embedded with lean philosophy will shorten the cycle time effectively. Thus, it contributes to the service level of satisfying the customers’ needs in a short lead time.

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