本文選題：數(shù)據(jù)機(jī)房 + 空調(diào)數(shù)字化設(shè)計(jì)��； 參考：《湖南大學(xué)》2015年碩士論文

【摘要】：近年來,移動(dòng)通信設(shè)備飛速發(fā)展,數(shù)據(jù)機(jī)房的分布面迅速擴(kuò)大,數(shù)據(jù)機(jī)房的數(shù)量也越來越多。在通信系統(tǒng)的建設(shè)和運(yùn)行中,空調(diào)系統(tǒng)能耗占據(jù)總能耗的30%-45%,并且比例在逐漸增大,數(shù)據(jù)機(jī)房的節(jié)能逐漸引起了人們的重視。通訊數(shù)據(jù)機(jī)房原來的冷卻對(duì)象是整個(gè)機(jī)房,其耗電量相當(dāng)大�，F(xiàn)在部分機(jī)柜整體設(shè)計(jì)為全封閉式結(jié)構(gòu),空調(diào)采用頂置空調(diào)。與敞開式相比,采用頂置空調(diào)的全封閉式結(jié)構(gòu)的機(jī)柜耗電量大大降低。IT設(shè)備最怕過熱,灰塵是導(dǎo)致過熱的一個(gè)因素。為了達(dá)到防塵目的,人們通常把這些重要設(shè)備放置在封閉的機(jī)房里。采用更合理的一體化設(shè)計(jì)的機(jī)房具有更高的實(shí)用性、先進(jìn)性、可擴(kuò)展性、可管理性和可維護(hù)性。本文以某通信企業(yè)的數(shù)據(jù)機(jī)房為對(duì)象,對(duì)采用頂置空調(diào)的全封閉式結(jié)構(gòu)的機(jī)柜開展了研究。對(duì)頂置空調(diào)進(jìn)行數(shù)值仿真,并采用CFD商業(yè)軟件FLUENT對(duì)數(shù)據(jù)機(jī)房熱環(huán)境進(jìn)行模擬,得出機(jī)房運(yùn)行環(huán)境。主要開展了三方面的研究工作：本文首先根據(jù)頂置空調(diào)的結(jié)構(gòu)及參數(shù),用C語言對(duì)空調(diào)整體系統(tǒng)和各個(gè)部件分別進(jìn)行數(shù)值仿真,得出空調(diào)系統(tǒng)的性能和送風(fēng)溫度,并且由數(shù)值模擬結(jié)果可看出選擇的整個(gè)系統(tǒng)和各部件模型是否合適。然后,為得出風(fēng)溫度對(duì)進(jìn)風(fēng)溫度的影響,本文用C語言編寫UDF函數(shù),且通過現(xiàn)場(chǎng)測(cè)量得到了通訊數(shù)據(jù)機(jī)房的簡(jiǎn)化物理模型,并選用恰當(dāng)?shù)倪B續(xù)性方程、動(dòng)量守恒方程、能量守恒方程、k-ε方程和邊界條件、初始條件,借助CFD仿真軟件對(duì)數(shù)據(jù)機(jī)房的熱環(huán)境進(jìn)行數(shù)值模擬計(jì)算。應(yīng)用編寫的UDF,當(dāng)室內(nèi)溫度對(duì)進(jìn)風(fēng)溫度的影響穩(wěn)定時(shí),得到數(shù)據(jù)機(jī)房氣流的速度場(chǎng)、溫度場(chǎng)分布,由模擬的結(jié)果看出數(shù)據(jù)機(jī)房?jī)?nèi)氣流組織存在不合理的地方。最后,對(duì)頂置空調(diào)進(jìn)行數(shù)值仿真模擬,得到空調(diào)系統(tǒng)的性能及室內(nèi)外溫度變化對(duì)空調(diào)系統(tǒng)性能的影響,數(shù)值模擬的結(jié)果表明隨著室內(nèi)的溫度升高,蒸發(fā)溫度、冷凝溫度、能效比也隨之升高；隨著室外的溫度升高,冷凝溫度也隨之升高,能效比減小,蒸發(fā)溫度的變化不明顯。
[Abstract]:In recent years, with the rapid development of mobile communication equipment, the distribution of the data computer room is expanding rapidly, and the number of the data computer room is more and more. In the construction and operation of the communication system, the energy consumption of the air conditioning system accounts for 30-45% of the total energy consumption, and the proportion is gradually increasing. The original cooling object of the communication data room is the whole computer room, which consumes a lot of electricity. Now part of the cabinet overall design for a closed structure, air-conditioning using top air-conditioning. Compared with the open type, the electricity consumption of the cabinet with fully enclosed structure with top air conditioning is greatly reduced. The dust is one of the factors leading to overheating. In order to prevent dust, people usually put these important equipment in closed machine room. The computer room with more reasonable integrated design has higher practicability, progressiveness, expansibility, manageability and maintainability. Taking the data computer room of a communication enterprise as an object, this paper studies the cabinet with fully enclosed structure of top air conditioning. The thermal environment of the data computer room is simulated by CFD commercial software fluent, and the operating environment of the computer room is obtained. Three aspects of the research work are mainly carried out: firstly, according to the structure and parameters of the top air conditioning system, the whole air conditioning system and each component are numerically simulated with C language, and the performance of the air conditioning system and the air temperature of the air supply system are obtained. From the numerical simulation results, we can see whether the whole system and each component model are suitable. Then, in order to find out the influence of the air temperature on the inlet air temperature, the UDF function is written in C language, and the simplified physical model of the communication data room is obtained by field measurement, and the appropriate continuity equation and momentum conservation equation are selected. The energy conservation equation and boundary conditions, initial conditions and CFD simulation software are used to simulate the thermal environment of the data room. When the influence of indoor temperature on inlet air temperature is stable, the velocity field and temperature field distribution of air flow in the data room are obtained. From the simulation results, it can be seen that the airflow distribution in the data room is unreasonable. Finally, the performance of the air conditioning system and the effect of indoor and outdoor temperature on the performance of the air conditioning system are obtained by numerical simulation. The results of numerical simulation show that with the increase of indoor temperature, evaporation temperature, condensation temperature, With the increase of outdoor temperature, the condensation temperature also increased, the energy efficiency ratio decreased, and the evaporation temperature did not change obviously.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU831

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