[[alternative]]The Development of a Energy Saving Equipment by Recycled Waste Gas in High Temperature Oven

碩士機電工程學系[[abstract]]本論文主要探討如何將高溫爐排出之高溫廢熱予以回收再利用，以達到節能的目的，方法是將高溫爐原本直接排放之廢氣(245℃)回收至熱交換裝置中，並與高溫爐的進氣(25℃室溫)做熱交換，藉以預熱進氣溫度，減低加熱器(heater)之負載。本研究之熱交換裝置是以殼管式熱交換器(Shell and tube heat exchanger)為主要參考架構，配合實際需求做設計，其中並針對影響管側流場分佈較巨的入風分散盤做數值模擬，而管側入風口之分散盤分為正對與偏移(15mm)入風口的兩種形式；最後將熱交換裝置搭載在高溫爐進行驗證比較，以實際測試熱交換裝置之熱效率及設備省能效率。 由研究結果得知，管側入風口正對分散盤之熱交換器效率為76.3%，而分散盤偏移管側入風口15mm之效率則為57.3%，推斷分散盤正對管側入風口之流速與流場分佈性較佳，而分散盤偏移管側入風口15mm因離入氣端較遠處產生渦流現象，導致流速與流場分佈性較差，其測試結果與數值模擬的趨勢吻合。搭載熱交換裝置之高溫爐經實際用電測試，最高可節省32%的用電量。[[abstract]]The study is based on how to recycle the hot wasted gas exhausted from High –Temperature Oven in order to saving energy. The methodology is to recycle the hot air (245°C) exhausted from High – Temperature Oven into the heating exchange devise, and mix with inlet air with 25°C room temperature from same High – Temperature Oven named as ‘ heating exchange’ . By pre-heating the inlet air, it means can reduce the burden of the heater. The type of heating exchange devise is use Shell and tube heat exchanger to be a mainly constructor and its design should be meet with practical need. A simulation done according to input air dispersed board that will affect greatly the tube side’s air flow. As for the input air dispersed board will be set on the front position and 15mm gap from original position. And then set the heating exchange devise into the High – Temperature Oven to test the heating efficiency and the rate of reducing devise energy. We can understand obviously from the result of this experiment, the air gate set on the front position, its result of the heating efficiency is 76.3%, on the other hand, the air gate set 15mm gap from original position, its heating efficiency is 57.3%. We can judge correctly the air gate set on the front position will be better on the speed and air flow spreading. And the air gate set on 15mm gap from position will have an eddying current due to a little bit distance from air gate, and its speed and air flow spreading become worse. This test results are almost same as the trendy of the simulation. And High – Temperature Oven set with heating exchange devise. its energy reduction will reach on 32% highly