【摘要】：我國能源形勢十分嚴峻，節(jié)能減排已成為我國的一個基本國策，是我國長期的重要戰(zhàn)略任務。隨著信息系統(tǒng)應用的發(fā)展與普及，數(shù)據(jù)中心的數(shù)量和規(guī)模正在高速發(fā)展，所耗電能是一個十分龐大的數(shù)目。數(shù)據(jù)中心內(nèi)部的設(shè)備發(fā)熱量大，且全年幾乎不間斷向外部排熱，為確保機房設(shè)備的穩(wěn)定可靠運行，，空調(diào)系統(tǒng)需要全年不間斷運行�？照{(diào)系統(tǒng)成為數(shù)據(jù)中心機房的主要耗電設(shè)備，其能耗占數(shù)據(jù)中心總能耗的比例近40%。降低空調(diào)系統(tǒng)能耗不僅能給國家的節(jié)能減排作出貢獻，對節(jié)省數(shù)據(jù)中心運作費用也有著重大意義。因此，采取有效措施降低數(shù)據(jù)中心空調(diào)系統(tǒng)能耗，是一個值得關(guān)注和研究的課題。 新風直接引入空調(diào)系統(tǒng)主要應用于冬季及過渡季節(jié)，利用室外低溫的自然空氣作為數(shù)據(jù)中心的冷卻能源，當機房室外空氣溫度低于某個設(shè)定值時，通過開啟送風裝置，將室外冷風經(jīng)空氣過濾裝置處理后直接或者與回風混合后送入機房，從而降低機房內(nèi)空氣溫度。新風直接引入空調(diào)系統(tǒng)的應用不僅可以減少數(shù)據(jù)中心機房內(nèi)空調(diào)設(shè)備的運行時間，節(jié)約電能，大大延長空調(diào)壓縮機的使用壽命，降低企業(yè)的運營成本，并可以減少空調(diào)設(shè)備故障的發(fā)生率，節(jié)約維護成本。 本文建立了一個典型的數(shù)據(jù)中心模型建筑，并以北京地區(qū)為例，首先對其進行常規(guī)空調(diào)系統(tǒng)設(shè)計并對其系統(tǒng)能耗進行估算，然后采用建筑空調(diào)負荷模擬軟件DeST對其建筑全年空調(diào)冷負荷及新風直接引入式空調(diào)系統(tǒng)的能耗進行模擬分析，確定了新風直接引入式空調(diào)系統(tǒng)的運行方案。新風直接引入式系統(tǒng)的應用過程中，新風過濾是個十分值得關(guān)注的問題。本文著重對空氣過濾器的性能進行了分析，并運用流體力學仿真軟件FLUENT模擬的方法對高效過濾器的阻力性能進行數(shù)值模擬，并初略地計算了各級過濾器的使用壽命。最后通過新風直接引入式空調(diào)系統(tǒng)方案與常規(guī)空調(diào)系統(tǒng)方案的能耗對比分析，論述了應用新風直接引入式空調(diào)輔助系統(tǒng)的經(jīng)濟性與可行性，為數(shù)據(jù)中心應用新風直接引入式空調(diào)系統(tǒng)的節(jié)能改造提供參考和依據(jù)。
[Abstract]:China's energy situation is very serious, energy conservation and emission reduction has become a basic national policy, is our country's long-term important strategic task. With the development and popularization of information system applications, the number and scale of data centers are developing rapidly, and the energy consumption is a very large number. In order to ensure the stable and reliable operation of the equipment in the computer room, the air-conditioning system needs to run uninterrupted throughout the year because of the large amount of heat generated from the equipment inside the data center and almost uninterrupted heat removal from the outside throughout the year. The air-conditioning system has become the main power-consuming equipment in the data center room, and its energy consumption accounts for nearly 40% of the total energy consumption in the data center. Reducing the energy consumption of air conditioning system can not only contribute to the national energy saving and emission reduction, but also have great significance to save the operation cost of data center. Therefore, taking effective measures to reduce the energy consumption of air conditioning system in data center is a subject worthy of attention and research. The introduction of fresh air into air conditioning system is mainly used in winter and transition season. The outdoor low temperature natural air is used as the cooling energy of the data center. When the outdoor air temperature of the computer room is lower than a certain set value, the air supply device is turned on. The outdoor cold air is treated directly or mixed with the return air and sent to the computer room, thus reducing the air temperature in the room. The application of direct introduction of fresh air to air conditioning system can not only reduce the running time of air conditioning equipment in data center room, save electric energy, greatly prolong the service life of air conditioning compressor, but also reduce the operation cost of enterprises. And can reduce the incidence of air conditioning equipment failure, save maintenance costs. In this paper, a typical data center model building is established. Taking Beijing area as an example, the conventional air conditioning system is designed and the energy consumption of the system is estimated. Then the air conditioning load simulation software DeST is used to simulate and analyze the annual cooling load and the energy consumption of the air conditioning system with direct intake of fresh air, and the operation scheme of the air conditioning system with direct intake of fresh air is determined. Fresh air filtration is a very important problem in the application of the direct introduction system of fresh air. In this paper, the performance of air filter is emphatically analyzed, and the resistance performance of high efficiency filter is numerically simulated by using fluid dynamics simulation software FLUENT, and the service life of various filters is calculated. Finally, through the comparison and analysis of the energy consumption between the scheme of fresh air direct air-conditioning system and that of conventional air-conditioning system, this paper discusses the economy and feasibility of applying the auxiliary air-conditioning system of fresh air direct-lead-in air-conditioning system. This paper provides a reference and basis for the energy-saving transformation of the air-conditioning system with fresh air direct pull-in the data center.
【學位授予單位】：河北工程大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU831

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