臺灣博碩士論文加值系統

環顧近年來，國內外針對便利商店省能相關研究大都以空調設備變頻主機及性能提升為主，冷凍冷藏設備性能提升為主，特別是開放式展示櫃的部份，做了許多設計改進，並導入流體力學與全尺寸實驗量測驗證，亦有研究探討開放式展示櫃透過氣廉之配置，防止冷能散失與熱捲入等，而密閉式玻璃門展示櫃的研究著重在玻璃門造成的結露，需用電熱除霧耗能進行節能，因此本研究針對冷藏櫃冷風流場進行模擬分析包括速度、溫度之分析狀況與節能可能性進行分析研究。
本研究計畫將進行展示櫃風道變更設計方法，並規劃風道出風口設置於展示櫃前方頂部位置，加裝蜂巢板或導流裝置來增加氣流的穩定性，並於玻璃門內側行成一空氣簾之效果。此外，藉由CFD電腦模擬軟體來預測風道設置方式，是否能有效增加氣流形態的穩定性且於玻璃門內形成空氣廉之效果，以維持展示櫃內層溫皆可達到均溫及能降低冷逸散、熱侵入的現象發生，如此便可大幅提昇密閉式玻璃門展示食物保藏之功效，並可減少壓縮機和送風機運轉時間以增加設備運轉的壽命且又可降低設備運轉時所耗費的能源進而達到節能之效果。

Review of the recent years, there are many studies about variable-frequency engine of air conditioned and performance promoted for energy saving of the convenience stores internally and abroad. There are many designs and improved of performance promoted for the equipment of freezer and refrigerator, opened type display cabinet, especially. And it would be proved by using Computational Fluid Dynamics (CFD) and experiments. There are also many research about opened type display cabinet with air curtain to be isolated the heat and cold by the air curtain; the point of energy saving research about closed type display cabinet would be caused the dew at glassed door by the device of thermo-defog.
In this study, that used CFD of analyzed skill to redesign and analyze for the air duct of closed type display cabinet. We would hope to add stability of air flow by installing a honeycomb net and diversion. Besides, it could be uniform of the temperature at plates. It can be reduced the air curtain to transfer the cold oven and the heat intrusion phenomenon. It could promoted the efficiency of food store at closed type display cabinet and increase the operating time by reducing to use compressor and fan equipment operation times and can increasing equipment operation the age. That could be used the experiment to understand the temperature profile distribution and energy saving of the design the air duct at closed type display cabinet. And it can further verify the numerical simulation analysis results.

摘要……………………………………………………………………….i
英文摘要…………………………………………………………………ii
誌謝……………………………………………………………………...iii
目錄……………………………………………………………………...iv
表目錄……………………………………………………………………v
圖目錄…………………………………………………………………...vi
第一章 緒論……………………………………………………………1
1-1 研究目的及動機………………………………………...1
1-2 研究的方法說明………………………………………...7
1-2 研究步驟………………………………………………...9
第二章 商業冷凍冷藏冰箱簡介……………………………………..10
2-1 制冷系統主要部份…………………………………….10
2-2 商業用冷凍冷藏設備分類…………………………….12
第三章 實驗分析……………………………………………………..16
3-1 實驗操作流程………………………………………….16
3-2 操作方法……………………………………………….24
3-3 實驗結果分析與討論………………………………….25
3-4 實驗數據圖…………………………………………….30
第四章 CFD電腦模擬分析…………………………………………..37
4-1 CFD電腦模擬簡介…………………………………….37
4-2 模擬系統之幾何外觀………………………………….40
4-3 模擬之邊界條件假設與求解………………………….44
4-4 CFD數值模擬格點測詴分析…………………………47
第五章 結果分析與討論…………………………………………......49
5-1 穩態模擬分析之結果………………………………….49
5-2 暫態模擬分析之結果………………………………….55
第六章 結論與建議…………………………………………………..73
6-1 結論…………………………………………………….73
6-2 建議…………………………………………………….73
參考文獻………………………………………………………………..74
同意書…………………………………………………………………..76

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