應用於核能電廠飼水加氫設備區之空調系統節能效益評估

Energy-Saving Evaluation of Air-Conditioning Systems Applied to Hydrogen-Water-Chemistry System of Nuclear Power Plant

何信吉(Shing-Ji Ho)

指導教授 ： 李宗興

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2011年)

摘要

目前如石油、煤、天燃氣等石化燃料，其所排放之CO2會影響溫室效應，導致全球表面溫度升高，若持續使用石化燃料，則加劇溫室效應，造成全球暖化，氣候變化異常，形成全球各地天災不斷，從CO2影響環境的觀點來看，核能發電可說是減少碳排放量抑制溫室效應的一種能源選擇。核能發電廠主要的發電設備是反應爐，為保護反應爐組件設備，因此採用飼水加氫(HWC)的方式來改變反應爐內的氧化環境，以預防晶間應力腐蝕龜裂(IGSCC)的發生及減緩裂痕成長速度。
本文以核能電廠飼水加氫設備區空調系統為對象，當在夏季時原空調系統無法滿足環境負載，致使飼水加氫設備區易因環境高溫而造成設備跳脫現象。針對改善該區域環境高溫之問題，本文針對不同空調設計模式進行節能效益評估。評估的指標分為三個層面來探討分別為能源耗用效益、成本效益分析、環境污染等三項指標來評估各改善方案。研究結果發現，採用案例5的方式最佳，在能源耗用效益上最為節電與其他案例相比最大相差可達487,824kW-hr。在成本效益分析上比其他案例花費少，最多可減少花費2,139萬元。在環境污染上其CO2排放量與其他案例比較，最多可減少排放310,744kg。本文研究成果，對於未來核能電廠規劃興建飼水加氫設備的區域，可做為空調系統規劃的參考。

關鍵字

空調系統 ； 飼水加氫 ； 節能評估 ； 核能電廠

並列摘要

The petrochemical fuels like petroleum, coal, and natural gas will emissive the CO2. And the CO2 of its emissions will also affect the greenhouse effect and will cause the whole world surface temperature to elevate. From the viewpoint of the environment influenced by CO2, the nuclear power may be one of the energy selection that will be reduced the carbon withdrawal to suppress the greenhouse effect. The main generating set of the nuclear power plant is the reactor. And the reactor vessel and recirculating pipe are the stainless steel which will produce intergranular stress corrosion crack (IGSCC). To protect the reactor, the feedwater with hydrogen is used to change the oxidized environment in the reactor and prevent the occurrence of IGSCC, so the crack growth speed will be slow down.
This thesis focuses on the study of environment high temperature problem in the area of hydrogen-water-chemistry system of nuclear power plant. At summer, the designed air-conditioning system is unable to satisfy the environment load, which causes the equipment trip due to the environment high temperature. To improve the environment high temperature, this thesis evaluates the benefit of the energy conservation among the different air-conditioning design patterns. There factors are analyzed for thesis evaluation: the benefit of the energy consumption, the cost benefit analysis and the environmental pollution to appraise each improvement plan. This investigation finds that the best way for energy consumption in electricity is Case 5, about saving 487,824kW-hr comparing with other cases. Secondly, 21.39 million NT dollars consumption less than other cases of the cost benefit analysis. Lastly, 310,744kg of the CO2 emission pollution compared with other cases. This thesis may provide air-conditioning system design reference for future hydrogen-water-chemistry system project of nuclear power plant.

並列關鍵字

Air-Conditioning System ； Hydrogen-Water-Chemistry System ； Evaluation of the Energy Saving ； Nuclear Power Plant

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