| Summary: | 碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 99 === 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.
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