【摘要】：目前，隨著科技的飛速發(fā)展和人們對(duì)生活水平的要求不斷提高，制冷行業(yè)在日常生活中的重要性也與日俱增。而我國(guó)作為一個(gè)人口大國(guó)，也是制冷空調(diào)工業(yè)的一個(gè)巨大市場(chǎng)，而且自1999年以來(lái)，我國(guó)的空調(diào)產(chǎn)量一直居世界首位。由于空調(diào)和核心部件以及其之間的連接管都是由金屬材料制造，因此空調(diào)行業(yè)對(duì)金屬礦產(chǎn)的依賴(lài)尤為明顯。而隨著最近幾十年空調(diào)產(chǎn)品復(fù)雜度的不斷增加，這一情況毫無(wú)疑問(wèn)會(huì)進(jìn)一步的加劇。 在眾多礦產(chǎn)資源中，家用空調(diào)行業(yè)對(duì)銅材料依賴(lài)性尤其明顯。最近幾年持續(xù)上漲的銅價(jià)和競(jìng)爭(zhēng)日益激烈的空調(diào)市場(chǎng)，給空調(diào)行業(yè)的發(fā)展帶來(lái)了巨大的挑戰(zhàn)。所以在空調(diào)上減少對(duì)銅的消耗不僅能響應(yīng)國(guó)家節(jié)能減排的政策，也對(duì)整個(gè)空調(diào)行業(yè)發(fā)展戰(zhàn)略有著積極的作用。除此之外，目前在我國(guó)空調(diào)行業(yè)中應(yīng)用最廣泛的制冷劑為R22，作為一種HCFC，其在進(jìn)入大氣后不僅會(huì)嚴(yán)重?fù)p害臭氧層，同時(shí)也會(huì)造成溫室效應(yīng)。因此，尋找新型環(huán)境友好型的替代制冷劑來(lái)取代傳統(tǒng)制冷劑，對(duì)于作為HCFCs的主要排放源的空調(diào)行業(yè)提高其國(guó)際競(jìng)爭(zhēng)力和推進(jìn)可持續(xù)發(fā)展也具有重大意義。 針對(duì)以上背景，本文以?xún)?nèi)螺紋管翅式換熱器為研究基礎(chǔ)，主要選取內(nèi)螺紋管翅式換熱器類(lèi)型，首先在空調(diào)焓差性能實(shí)驗(yàn)室中首先對(duì)采用銅鋁復(fù)合管翅式(ACC)換熱器的空調(diào)樣機(jī)進(jìn)行了實(shí)驗(yàn)研究，并與同規(guī)格的全銅以及全鋁換熱器做了比較；然后分析了基于新型5mm室內(nèi)換熱器的空調(diào)樣機(jī)的工作性能，并與基于傳統(tǒng)5mm和7mm室內(nèi)換熱器的空調(diào)樣機(jī)的性能做了對(duì)比；最后以基于5mm換熱器室內(nèi)換熱器的空調(diào)樣機(jī)為平臺(tái)，采用灌注式的方法考察了幾種新冷媒的循環(huán)特性。根據(jù)本文的實(shí)驗(yàn)研究可以得出如下主要結(jié)論： （1）與相同規(guī)格的純銅換熱器相比，ACC換熱器在原材料成本上可以節(jié)約63%。且其空調(diào)整機(jī)性能與采用純銅換熱器的相當(dāng)，但比采用純鋁換熱器的高出很多。 （2）對(duì)于優(yōu)化后的5mm空調(diào)室內(nèi)換熱器，其螺旋角為6°時(shí)性能最好。室外換熱器回路更改后，相對(duì)于采用傳統(tǒng)7mm室內(nèi)換熱器的空調(diào)系統(tǒng)而言，，其性能相當(dāng)。 （3）在制冷劑灌注式實(shí)驗(yàn)中，名義制熱時(shí)，R32和R290的COP相對(duì)R22的要高出11.0%，相對(duì)R410A的要高出5.3%；在名義制冷時(shí)，R32和R290的COP相對(duì)R22的要分別高出26.8%和20.4%，相對(duì)R410A的要分別高出7.1%和2.1%。但綜合考慮R290比R32更優(yōu)，因?yàn)槠湓谌〉米罴蜒h(huán)時(shí)制冷劑充注量小于R32的二分之一，因此其很適用于在家用分體式空調(diào)中替代傳統(tǒng)制冷劑。 （4）R290系統(tǒng)在增加回?zé)嵫b置后，制冷能力提高了5.3%，COP提高了5.1%，制冷劑最佳充注量減少6%。
[Abstract]:At present, with the rapid development of science and technology and the improvement of people's standard of living, refrigeration industry is becoming more and more important in daily life. As a large country of population, China is also a huge market of refrigeration and air conditioning industry. Since 1999, China's air conditioning output has been ranked first in the world. Because air conditioning and core components and the connections between them are made of metal materials, the air conditioning industry is particularly dependent on metal minerals. With the increasing complexity of air-conditioning products in recent decades, this situation will undoubtedly be further aggravated. In many mineral resources, the household air-conditioning industry is particularly dependent on copper materials. The rising copper price and the increasingly competitive air conditioning market in recent years have brought great challenges to the development of the air conditioning industry. Therefore, reducing copper consumption in air conditioning can not only respond to the national policy of energy saving and emission reduction, but also play a positive role in the development strategy of the whole air conditioning industry. In addition, R22 is the most widely used refrigerant in air conditioning industry in China at present. As a kind of HCFC, it will not only seriously damage the ozone layer but also cause Greenhouse Effect after entering the atmosphere. Therefore, it is of great significance for the air conditioning industry as the main source of HCFCs to improve its international competitiveness and promote sustainable development by looking for a new type of environment-friendly alternative refrigerant to replace the traditional refrigerant. In view of the above background, based on the research of inner threaded tube fin heat exchanger, this paper mainly selects the type of inner thread tube fin heat exchanger. Firstly, in the air conditioning enthalpy performance laboratory, the air conditioning prototype with copper-aluminum composite tube fin (ACC) heat exchanger is studied and compared with all copper and aluminum heat exchangers of the same specification. Then the performance of the air conditioning prototype based on the new 5mm indoor heat exchanger is analyzed and compared with the air conditioning prototype based on the traditional 5mm and 7mm heat exchangers. Finally, the air conditioning prototype based on the 5mm heat exchanger is taken as the platform. The circulation characteristics of several new refrigerants were investigated by perfusion method. The main conclusions are as follows: (1) compared with pure copper heat exchangers of the same specification, ACC heat exchangers can save 63% of raw material cost. The performance of the whole air conditioner is similar to that of copper heat exchanger, but much higher than that of pure aluminum heat exchanger. (2) for the optimized 5mm indoor heat exchanger, the performance is the best when the spiral angle is 6 擄. After the loop of outdoor heat exchanger is changed, the performance of the air conditioning system with traditional 7mm indoor heat exchanger is comparable. (3) in the refrigerant perfusion experiment, In nominal heating, the COP of R32 and R290 is 11.0 higher than that of R22, and 5.3of R410A, and the COP of R32 and R290 is 26.8% and 20.4% higher than that of R22 and 7.1% and 2.1% higher than that of R410A in nominal cooling. However, R290 is better than R32 when the optimal cycle is obtained because the refrigerant charge is less than 1/2 of R32, so R290 is suitable for replacing traditional refrigerant in domestic split air conditioners. (4) with the addition of regenerator, The refrigeration capacity increased by 5.3C and cop increased by 5.1, and the optimal refrigerant charge decreased by 6.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TB65;TM925.12

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相關(guān)期刊論文 前2條

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本文編號(hào)：2264884