本文關(guān)鍵詞：基站用顯熱制冷空調(diào)的性能計(jì)算與實(shí)驗(yàn)研究　出處：《湖南大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 顯熱制冷 毛細(xì)管長(zhǎng)度 膨脹閥開度 充注量 穩(wěn)態(tài)模擬

【摘要】：隨著制冷空調(diào)設(shè)備的迅速發(fā)展及普及使用,空調(diào)系統(tǒng)己逐步成為世界上能量消耗最多的系統(tǒng)之一,對(duì)空調(diào)的節(jié)能降耗已成為研究熱點(diǎn)問題。節(jié)流裝置與制冷劑充注量的匹配對(duì)空調(diào)能耗有較大影響,本文通過模擬計(jì)算和實(shí)驗(yàn)研究,分析基站用顯熱制冷空調(diào)的熱力膨脹閥開度、毛細(xì)管長(zhǎng)度和充注量的變化對(duì)空調(diào)系統(tǒng)性能的影響。風(fēng)冷式顯熱制冷空調(diào)是一種制冷量為400W的機(jī)柜專用空調(diào)器,本文對(duì)機(jī)柜專用空調(diào)器的制冷部件建立穩(wěn)態(tài)模型。其中壓縮機(jī)采用集中參數(shù)模型,冷凝器、蒸發(fā)器和螺旋狀毛細(xì)管采用分布參數(shù)模型,通過順序模塊法依次求解各模型,并分析了不同毛細(xì)管長(zhǎng)度和制冷劑充注量對(duì)空調(diào)制冷量和COP的影響。結(jié)果表明存在毛細(xì)管長(zhǎng)度和充注量的最佳匹配值使制冷量和COP最優(yōu),最佳匹配值為毛細(xì)管長(zhǎng)度0.14m、充注量120g。優(yōu)化后的制冷量和COP相比毛細(xì)管長(zhǎng)度為0.2m,充注量為160g的空調(diào)樣機(jī)制冷量和COP提升了5.3%和8.8%。在焓差實(shí)驗(yàn)室測(cè)試了空調(diào)樣機(jī)的性能參數(shù),并與模擬計(jì)算結(jié)果進(jìn)行比較,實(shí)驗(yàn)值與計(jì)算值的最大相對(duì)誤差為7.43%,模擬計(jì)算和實(shí)驗(yàn)研究結(jié)果可為機(jī)柜專用空調(diào)的產(chǎn)品設(shè)計(jì)和性能預(yù)測(cè)提供指導(dǎo)。通過實(shí)驗(yàn)研究了制冷量為5500W的水冷式顯熱制冷空調(diào)的不同膨脹閥開度和制冷劑充注量對(duì)系統(tǒng)性能的影響。實(shí)驗(yàn)結(jié)果表明在膨脹閥開度不變的情況下,制冷量隨充注量的增加先增大后減小,其變化范圍為2000W~5500W,并得出不同膨脹閥開度情況下的最佳充注量不同。當(dāng)膨脹閥開度為最大開度的1/6且充注量為1900g時(shí),系統(tǒng)性能最優(yōu)。通過卡爾波斯判別法判定空調(diào)表冷器均處于干工況運(yùn)行。本實(shí)驗(yàn)結(jié)果可為樣機(jī)的優(yōu)化提供參考。
[Abstract]:With the popularization and rapid development of refrigeration and air conditioning equipment, air-conditioning system has gradually become one of the largest energy consumption in the world, the consumption of energy-saving air-conditioning has become a hot topic., a throttling device and refrigerant charge has great influence on the energy consumption of air conditioning, through the experimental study on Simulation and analysis of the base station, the use of heat the sensible heat of the refrigeration and air conditioning expansion valve opening, and the effect of the length of capillary filling quantity change on the performance of air conditioning system. Air cooled heat refrigeration and air conditioning is a cooling capacity of the cabinet air conditioner for 400W, the components of the special air conditioning refrigeration cabinet steady model was established. The compressor lumped parameter model condenser, evaporator, and spiral capillary distributed parameter model by the sequential module method to solve the model, and analyzes the different capillary length and refrigerant Effect of filling quantity of air conditioning cooling capacity and COP. The results show that the length and the best matching charge value makes the cooling capacity and the optimal COP value for the best matching capillary, capillary length 0.14m, filling quantity of 120g. after optimization of the cooling capacity and COP compared to the capillary length is 0.2m, filling quantity for air conditioner like mechanism cold 160g and COP increased 5.3% and 8.8%. difference in laboratory enthalpy performance parameters of air-conditioning prototype test, and compared with the results of simulation and calculation of maximum relative error of experimental value is 7.43%, the simulation and experimental results can provide guidance for the cabinet designed forecast product design and performance of the air conditioner. Through the experimental study on the cooling capacity of the water-cooled 5500W heat refrigeration and air conditioning of different expansion valve opening and refrigerant charge on the system performance. The experimental results show that the expansion valve opening constant under refrigeration With the increasing amount of filling quantity increases first and then decreases, the change range of 2000W~5500W, and the optimum filling quantity of different expansion valve opening under the condition of different. When the opening of the opening of the 1/6 and the filling quantity is 1900g for maximum expansion valve, optimal system performance. The decision table cold air conditioner in the dry condition of running through the Carle Persian criterion. The results can provide a reference for the optimization of the prototype.

【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

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 張忠斌;杜塏;黃虎;張敬坤;潘亞梅;;制冷劑充注量對(duì)微通道蒸發(fā)器房間空調(diào)器性能影響的試驗(yàn)研究[J];東南大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年03期

2 秦婷;;通信基站能耗分析[J];西安郵電學(xué)院學(xué)報(bào);2011年02期

3 龍建佑;朱冬生;陳禮;;制冷劑充注量與毛細(xì)管長(zhǎng)度對(duì)家用空調(diào)性能的影響[J];流體機(jī)械;2006年04期

4 邵雙全,石文星,李先庭,彥啟森;制冷劑充灌量和毛細(xì)管長(zhǎng)度對(duì)空調(diào)系統(tǒng)性能的影響[J];低溫工程;2002年02期

5 邵雙全,石文星,李先庭,彥啟森;空調(diào)系統(tǒng)制冷劑充灌量與毛細(xì)管長(zhǎng)度的優(yōu)化匹配研究[J];流體機(jī)械;2002年02期

6 王康迪,王懷信;系統(tǒng)仿真確定制冷劑充灌量[J];制冷學(xué)報(bào);2001年04期

7 張春路,丁國(guó)良,李灝;毛細(xì)管內(nèi)兩相流的通用積分模型[J];化工學(xué)報(bào);1999年04期

8 郭憲民,朱春玲,徐壽法,蔣福根;空調(diào)器毛細(xì)管與充液量匹配的理論與試驗(yàn)研究[J];南京航空航天大學(xué)學(xué)報(bào);1999年03期

相關(guān)博士學(xué)位論文 前2條

1 楊亮;基于仿真的制冷系統(tǒng)穩(wěn)健設(shè)計(jì)方法研究[D];上海交通大學(xué);2012年

2 周國(guó)兵;絕熱毛細(xì)管制冷劑流動(dòng)特性及與系統(tǒng)匹配研究[D];天津大學(xué);2004年

相關(guān)碩士學(xué)位論文 前2條

1 劉英俊;通信基站用相變儲(chǔ)能模塊的開發(fā)與數(shù)值模擬[D];湖南大學(xué);2013年

2 楊東旺;基于遺傳模擬退火算法的熱泵和制冷系統(tǒng)優(yōu)化[D];天津大學(xué);2007年

，

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