水力發電廠水庫淤泥再利用與永續發展之創新設計

Innovative Reservoir Sediments Reuse and Design for Sustainability of the Hydroelectric Power Plants

鄭詠隆(Yung-Lung Cheng)

指導教授 ： 黃惠民 ； 陳平舜

中原大學/電機資訊學院/工業與系統工程研究所/博士(2014年)

https://doi.org/10.6840/cycu201400149

摘要

科技與經濟的高度發展及進步，為人類帶來了舒適與便捷的生活品質，人類對電力的高度依賴，已經成為現代生活中不可或缺的能源，相對的電力需求供應也快速地成長。逢此世界能源日漸枯竭之際，世界各國無不竭力積極開發天然能源及研發新替代能源，太陽能、風力、地熱發電等雖可視為永久的能源利用方法，但大規模開發仍有技術性與經濟性之限制，而水力發電屬於自然能源，且技術條件成熟符合經濟原則，對電力系統的品質控制也相當穩定。然而水力發電廠在製造再生能源的過程中，水庫淤泥(Reservoir Sediment)是世界各水庫遭遇的另一類環境問題，淤泥如僅止於清除，而無妥善處理，將對環境生態造成二次公害，故應予以資源化再利用方為上策。
本研究係以DFSS（Design For Six Sigma）綠色設計流程將水庫淤泥及屬於建築事業廢棄物的廢土結合於混凝土中，加上混凝土固化劑，免燒結(Sintering)經高壓成型，自然養護28天後，即成為高強度之免燒結固化磚，該產品是環保、節能、利廢的新型牆體材料，符合國家發展循環經濟、保護自然生態、促進可永續發展的要求。
本研究以製磚業為例，建構在生產過程中多次剔除不良品下，允許及不允許缺貨兩種存貨策略，求得最佳之訂購批量、運送次數、剔除不良品次數，以達買賣雙方之聯合總存貨成本最低。並在數值範例中說明計算過程外，也對一些參數做敏感度分析，以瞭解參數變動對最佳解結果之影響。

關鍵字

DFSS ； 永續 ； 存貨 ； 水庫淤泥 ； 再生能源

並列摘要

The development and improvement of technology and economy has brought comfort and convenience to people, resulting in improved quality of life. People’s reliance on electricity has made its sources essential, and the demand for it has risen rapidly. While the world faces dwindling supplies of energy, every nation in the world is actively developing natural energy sources and new alternative energy sources. Although solar power, wind power, and geothermal power can be seen as sustainable ways to produce energy, large scale production of these resources has both technical and financial limitations. Hydroelectricity is considered a natural resource and is a mature, cost-effective technology. In the process of producing renewable hydroelectric energy, plants all over the world are facing the problem of reservoir sediment. If this sediment is removed but not properly disposed of, it can become a secondary pollutant. This study proposes a way to resolve this problem through reuse and recycling.
In the case study, using a green design based on the Design for Six Sigma (DFSS) process, reservoir sediment and the masonry waste from the construction industry are combined with cement and a curing agent. The resulting mixture is not sintered, but is molded under high pressure. After 28 days of natural curing, the result is a high strength, non-sintered cured brick. This product is a new walling material that fulfills the objectives of environmental protection, energy conservation, and waste recycling. It also meets the need to develop a circular economy, protect ecosystems, and promote sustainable development.
In this study, two integrated vendor-buyer inventory models with and without backordering for the brick production case study are also presented. A random fraction of defective items is produced by the vendor who implements a 100% inspection to screen and scrap defective units by multiple disposals during the production period. We derive the optimal production batch, the number of shipments and the number of defective item disposed in order to minimize the integrated inventory cost. The examples illustrate the solution procedure and analyze the sensitivity of the optimal policies with respect to changes in some system parameters.

並列關鍵字

inventory ； sustainable ； DFSS ； reservoir sediment ； renewable energy

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