水輪機用於冷卻水塔節能評估改善之研究

Abstract

冷卻循環系統是化工廠運作最基本單元，運行過程當中藉由冷卻水與氣 體的交互作用達成冷卻效果，由於在系統設計之初考量製程安全係數，因此 在循環水泵選型時會加入安全餘裕，而這能量會以壓力的型態存在於冷卻循 水中。水輪機在經過長時間的發展後已經是非常成熟的水力機械，藉由水輪 機的轉換可將水所蘊含能量轉換為機械能並再利用。本論文所要研究的目的 就是如何將水輪機應用在冷卻循環水的系統中，藉由水輪機的工作特性將原 本剩餘在冷卻系統中的能量轉換取出後加以利用，以達成能源有效再利用。 有鑑於此本文研究分為三個部份進行改善與研究: 1.先說明水輪機械的型式及工作原理，並討論其它可用節能方式。 2.再以工程評估的方式考量改造過程中所應處理的問題，並分析現有系統是 否適合進行水輪機組的改造，評估主要包含剩餘能量的估算、系統改裝後 的安全性及工程實做的步驟。在完成評估作業後，選定適合的系統進行實 際改善實驗。 3.完成改善實驗工程後，透過監控儀器的量測取得相關數據並加以分析，將 結果驗證其改造的可能性，並透過實驗找出系統再優化的建議。

Cooling Water Circulation Systems is the basic unit of chemical works operations. During operation of which by the interaction of the gas with the cooling water to achieve the cooling effect. Since the beginning of system design process to consider the safety factor. Therefore, when circulating pump selection will be added safety to spare. This type of energy will be pressure present in the cooling water circulation system. Turbine has been very mature hydraulic machinery after a long period of development. With turbine conversion may be inherent in the water energy into mechanical energy and recycling. The purpose of this thesis is to study how to apply the turbine in cooling water circulation system. It is used by the operating characteristics of the turbine to gain the original residual energy that remains in the cooling system to achieve the effective utilization of energy. According to this purpose, this paper is divided into three parts to improvement and research. 1.First at all, described turbine machine type and working principle and discuss other available energy conservation methods. 2.Consider the question of the transformation process should be handled according the way of engineering assessment. Analyze whether the existing system is suitable for the modification of turbine unit. The assessment included estimation of residual energy, the safety after system modification and carry on the work step by step in engineering construction. Selected the suitable system to do actual improvement experiments after assessment work has been done. 3.Figure out and analyse the related data form monitoring instruments after Complete improvements experiment works. Show the possibility of system modification with the results and propose amendments to improve this system via experiment.