本文選題：數(shù)據(jù)中心 + 自然冷源　； 參考：《河北工程大學(xué)》2013年碩士論文

【摘要】：能源是各國國民經(jīng)濟發(fā)展的動力，關(guān)系到社會的運行和國家的安全，同時也關(guān)系到生態(tài)環(huán)境的保護和子孫后代的生存與發(fā)展，能源是必不可少的社會和經(jīng)濟發(fā)展的物質(zhì)前提。隨著經(jīng)濟的騰飛，人類已經(jīng)進入了高科技、高效率的信息時代，，信息產(chǎn)業(yè)的飛速發(fā)展加速了人類文明的進步，但在能源日益緊缺的今天，數(shù)據(jù)中心的高能耗已經(jīng)變成了人們必須面對且亟待解決的新問題。 數(shù)據(jù)中心是信息產(chǎn)業(yè)的中樞系統(tǒng)，隨著信息產(chǎn)業(yè)技術(shù)的升級和發(fā)展，對數(shù)據(jù)中心的需求快速增長，而一線城市建設(shè)用地的限制迫使數(shù)據(jù)中心提高空間利用率，加上各類IT設(shè)備向小型化、高處理能力演變，促使數(shù)據(jù)中心逐漸向高密度方向發(fā)展。據(jù)統(tǒng)計，近十年來，數(shù)據(jù)中心IT設(shè)備功率密度從300瓦/平方米增加到超過2000瓦/平方米。單個機柜容納的設(shè)備功率從不到1千瓦增長到接近10千瓦。高密度設(shè)備布局直接帶來高密度散熱，對冷卻系統(tǒng)提出的要求越來越苛刻，導(dǎo)致近年來數(shù)據(jù)中心空調(diào)系統(tǒng)能耗急劇增長。 數(shù)據(jù)中心不間斷的散熱，冷負荷全年都保持在較高的水平，因此很多地區(qū)即使在冬天也要開啟制冷機組對機房降溫，很不合理。本文以上海地區(qū)某辦公樓自用型數(shù)據(jù)中心為模型，研究了間接利用自然冷源的空調(diào)輔助系統(tǒng)。 文章首先對建筑模型進行了簡單介紹，并通過DeST軟件對機房的負荷進行模擬分析，從而根據(jù)機房內(nèi)逐時變動的冷負荷確定機房逐時所需的送風(fēng)量及送風(fēng)溫度。再根據(jù)這些數(shù)據(jù)通過對比分析出了該數(shù)據(jù)中心機房模型間接利用自然冷源的節(jié)能潛力。由于隨著室外溫度的變化，機房所需的冷風(fēng)量也在變化，風(fēng)機需要變頻運行，因此，文章還對換熱器的性能隨風(fēng)量的變化情況進行了模擬，主要包括換熱效率、換熱量、換熱系數(shù)以及壓力損失隨冷風(fēng)量的不同需求而發(fā)生的改變。其中，壓力損失的隨風(fēng)量的變化趨勢可以作為風(fēng)機變頻的計算依據(jù)。 通過一系列的計算與模擬，最終得出了新風(fēng)間接換熱式空調(diào)輔助系統(tǒng)的年節(jié)電情況。文章最后對文中的不足之處進行了總結(jié)與展望，如該系統(tǒng)只考慮了單獨運行機房空調(diào)與單獨運行基站換熱器的情況，而沒有考慮當(dāng)室外溫度雖然低于室內(nèi)溫度，但無法承擔(dān)全部冷負荷時，機房空調(diào)與基站換熱器共同運行的情況。因此，在本文的計算結(jié)果的基礎(chǔ)上，仍有一部分節(jié)能潛力有待發(fā)掘，筆者會在今后的學(xué)習(xí)與工作中繼續(xù)探究。
[Abstract]:Energy is the driving force of the national economic development of every country, relates to the operation of the society and the security of the country, and also relates to the protection of the ecological environment and the survival and development of the future generations. Energy is the essential material premise of the social and economic development. With the rapid development of economy, mankind has entered the information age of high technology and high efficiency. The rapid development of information industry accelerates the progress of human civilization. The high energy consumption of data center has become a new problem that must be faced and solved urgently. Data center is the central system of information industry. With the upgrading and development of information industry technology, the demand for data center increases rapidly. In addition, all kinds of IT equipment to miniaturization, high processing capacity evolution, promote the development of data centers to the direction of high density. According to statistics, in the past ten years, the power density of IT equipment in data center has increased from 300W / m2 to more than 2000 W / m2. A single cabinet accommodates equipment power from less than one kilowatt to nearly 10 kilowatts. The layout of high density equipment directly brings about high density heat dissipation, and the requirement for cooling system is becoming more and more stringent, which leads to the sharp increase of energy consumption in data center air conditioning system in recent years. The data center continuously dissipates heat, the cooling load is kept at a high level all year round, so it is unreasonable to open the refrigeration unit to cool the engine room in many areas even in winter. Based on the data center of an office building in Shanghai, this paper studies the auxiliary air conditioning system which indirectly utilizes the natural cold source. This paper introduces the building model and simulates the load of the engine room by DeST software, so as to determine the air supply rate and air temperature according to the hourly cooling load in the engine room. Based on these data, the energy saving potential of the data center computer room model using natural cold source is analyzed. With the change of outdoor temperature, the amount of cold air needed in the engine room is also changing, and the fan needs frequency conversion operation. Therefore, the performance of heat exchanger with the change of air volume is simulated in this paper, including heat transfer efficiency and heat transfer. The change of heat transfer coefficient and pressure loss with different demand of cold air. The variation trend of pressure loss with air volume can be used as the basis for the calculation of fan frequency conversion. Through a series of calculation and simulation, the annual power saving of the auxiliary system of indirect heat transfer air conditioning with fresh air is obtained. At the end of the paper, the shortcomings of the paper are summarized and prospected. For example, the system only takes into account the single operation of the air-conditioning in the engine room and the heat exchanger of the base station, but not when the outdoor temperature is lower than the indoor temperature. But can not bear all the cooling load, room air-conditioning and base-station heat exchanger operation. Therefore, on the basis of the results of this paper, there is still a part of energy saving potential to be explored, the author will continue to explore in the future study and work.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU831

【參考文獻】

相關(guān)期刊論文 前10條

1 錢伯章;;世界能源消費現(xiàn)狀和可再生能源發(fā)展趨勢(上)[J];節(jié)能與環(huán)保;2006年03期

2 胡偉;何杞鑫;俞震;;通信機房節(jié)能平臺及其應(yīng)用[J];電源技術(shù)應(yīng)用;2008年05期

3 任效明;梁新剛;;百葉窗和針肋的傳熱與流阻特性的數(shù)值研究[J];工程熱物理學(xué)報;2007年01期

4 ;連載19:上送風(fēng)機房機柜精確送風(fēng)技術(shù)[J];廣東通信技術(shù);2009年12期

5 ;中國云計算數(shù)據(jù)中心發(fā)展現(xiàn)狀[J];硅谷;2012年09期

6 陳文超;張鎖龍;梁欣;;人字形板式換熱器雙流道模型的溫度場數(shù)值模擬[J];化工機械;2010年04期

7 劉東,陳沛霖,劉傳聚;變頻技術(shù)與空調(diào)節(jié)能[J];節(jié)能技術(shù);2001年06期

8 張濤;劉曉華;趙康;江億;;溫濕度獨立控制空調(diào)系統(tǒng)應(yīng)用性能分析[J];建筑科學(xué);2010年10期

9 陳超,渡邊俊行,謝光亞,于航;日本的建筑節(jié)能概念與政策[J];暖通空調(diào);2002年06期

10 周俊杰,李光熙,屈治國,陶文銓;開縫肋片表面的數(shù)值模擬及特性分析[J];暖通空調(diào);2005年07期

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