本文選題：雙動(dòng)力直膨式 + 冷凝壓力浮動(dòng)變化��； 參考：《天津商業(yè)大學(xué)》2014年碩士論文

【摘要】：本課題研究的出發(fā)點(diǎn)為,我國(guó)大部分地區(qū)處于亞熱帶氣候區(qū),四季變化明顯,冬、夏兩季環(huán)境溫差較大。本文充分利用我國(guó)地理氣候現(xiàn)狀,較大幅度降低直膨式制冷系統(tǒng)運(yùn)行冷凝壓力,實(shí)現(xiàn)制冷效率較大幅度的提升,從而減少能源消耗量,并降低環(huán)境污染程度。 本文提出一種介于傳統(tǒng)直膨式制冷系統(tǒng)(Traditional Direct Expansion Refrigeration System-TDX)與泵供液制冷系統(tǒng)(Refrigeration System with Pump Circulation-RPC)之間的的一種新的制冷系統(tǒng)：泵與壓縮機(jī)雙動(dòng)力直膨式制冷系統(tǒng)(The Dual Power Direct Expansion Refrigeration System of Pump and Compressor-DXPC)。此制冷系統(tǒng)是在TDX制冷系統(tǒng)的基礎(chǔ)上在儲(chǔ)液器與膨脹閥之間的液體管路上加裝工質(zhì)泵,變?yōu)镈XPC制冷系統(tǒng)。此制冷系統(tǒng)的特點(diǎn)為：壓縮機(jī)主要負(fù)責(zé)制冷劑氣體的壓縮,泵主要負(fù)責(zé)液體制冷劑的輸送。由于泵承擔(dān)了系統(tǒng)供液的主要責(zé)任,那么壓縮機(jī)的排氣壓力可以降低,即系統(tǒng)的冷凝壓力可以降低。從而可以使冷凝壓力隨著外界環(huán)境溫度變化而浮動(dòng)變化。當(dāng)外界環(huán)境溫度較低時(shí),冷凝壓力也可以較低,從而提高壓縮機(jī)的制冷量并降低其耗能,同時(shí)泵增加的耗功相對(duì)壓縮機(jī)減少的耗功較少,進(jìn)而實(shí)現(xiàn)整個(gè)制冷系統(tǒng)效率的提高,降低運(yùn)行與維護(hù)費(fèi)用,使環(huán)境更加友好,達(dá)到節(jié)能減排的目的。 本文通過(guò)理論分析和實(shí)驗(yàn)研究得出DXPC制冷系統(tǒng)如下優(yōu)點(diǎn)： 1.與TDX制冷系統(tǒng)比較,冷凝壓力降低,制冷效率提高。 2.與RPC制冷系統(tǒng)比較,制冷劑充注量大大減少。 3.噪音降低,環(huán)境更加友好。 4.減少壓縮機(jī)故障率,延長(zhǎng)壓縮機(jī)使用壽命,降低運(yùn)行維護(hù)費(fèi)用。
[Abstract]:The starting point of this research is that most of China is in the subtropical climate area, the change of four seasons is obvious, and the difference of environment temperature between winter and summer is great. In this paper, we make full use of the present situation of geographical climate in our country, greatly reduce the condensing pressure of direct-expansion refrigeration system, and achieve a large increase in refrigeration efficiency, thus reducing energy consumption and reducing the degree of environmental pollution. In this paper, a new refrigeration system, the Dual Power Direct Expansion Refrigeration System of Pump and Compressor-DXPC system, is proposed, which is between the traditional Direct Expansion Refrigeration system TX and the Refrigeration System with Pump Circulation-RPC. On the basis of the TDX refrigeration system, the refrigerant pump is added to the liquid pipeline between the liquid accumulator and the expansion valve, and the DXPC refrigeration system is changed. The characteristics of this refrigeration system are: compressor mainly responsible for refrigerant gas compression, pump mainly responsible for the transportation of liquid refrigerant. As the pump bears the primary responsibility for the system, the compressor exhaust pressure can be reduced, that is, the condensing pressure of the system can be reduced. Thus, the condensing pressure can fluctuate with the change of ambient temperature. When the external temperature is low, the condensing pressure can also be lower, which can increase the refrigerating capacity of the compressor and reduce its energy consumption. At the same time, the increased energy consumption of the pump is less than that of the compressor, and the efficiency of the whole refrigeration system can be improved. Reduce the cost of operation and maintenance, make the environment more friendly, achieve the purpose of energy saving and emission reduction. In this paper, the advantages of DXPC refrigeration system are obtained by theoretical analysis and experimental research. 1. Compared with the TDX refrigeration system, the condensing pressure is reduced and the refrigeration efficiency is improved. 2. Compared with RPC refrigeration system, refrigerant charge is greatly reduced. 3. The noise is reduced and the environment is more friendly. 4. Reduce compressor failure rate, prolong compressor service life, reduce operating and maintenance costs.
【學(xué)位授予單位】：天津商業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TB657

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 梁彩華,張小松,李舒宏;阻塞流對(duì)電子膨脹閥控制的影響研究[J];東南大學(xué)學(xué)報(bào)(自然科學(xué)版);2005年01期

2 宮赤坤,華澤釗;電子膨脹閥神經(jīng)元單值預(yù)測(cè)控制[J];低溫工程;2002年05期

3 郝華杰;申曉亮;;變頻壓縮機(jī)的研究現(xiàn)狀[J];低溫與超導(dǎo);2010年07期

4 周志強(qiáng);;中國(guó)能源現(xiàn)狀、發(fā)展趨勢(shì)及對(duì)策[J];能源與環(huán)境;2008年06期

5 孫永明;電子膨脹閥在船舶冷藏集裝箱中的應(yīng)用研究[J];機(jī)電設(shè)備;2001年06期

6 孫忠宇;程有凱;;冷庫(kù)現(xiàn)狀及冷庫(kù)節(jié)能途徑[J];節(jié)能;2007年07期

7 賈少青;陳平;李?lèi)?ài)華;;基于神經(jīng)網(wǎng)絡(luò)的變頻空調(diào)控制系統(tǒng)[J];計(jì)算機(jī)測(cè)量與控制;2006年08期

8 吳東興 ,樊高定 ,史敏 ,金蘇敏 ,徐家新;多聯(lián)式空調(diào)(熱泵)機(jī)組控制方案探討[J];暖通空調(diào);2005年04期

9 張川;陳芝久;陳江平;;電子膨脹閥制冷劑流動(dòng)壅塞特性的理論與試驗(yàn)分析[J];上海交通大學(xué)學(xué)報(bào);2007年03期

10 趙遠(yuǎn)揚(yáng),李連生,束鵬程;壓縮機(jī)的技術(shù)現(xiàn)狀及其發(fā)展趨勢(shì)[J];通用機(jī)械;2005年09期

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