本文關(guān)鍵詞： 水冷式多聯(lián)機(jī) 制冷劑管路阻力損失 制冷量衰減 能效比 經(jīng)濟(jì)性分析　出處：《重慶大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：多聯(lián)機(jī)空調(diào)系統(tǒng)，即可變制冷劑流量空調(diào)系統(tǒng)(簡(jiǎn)稱(chēng)VRV)，由日本大金公司于1982年開(kāi)發(fā)推出。多聯(lián)機(jī)是在傳統(tǒng)房間分體空調(diào)器基礎(chǔ)上發(fā)展而來(lái)的，它實(shí)現(xiàn)了一(多)臺(tái)室外機(jī)和多臺(tái)室內(nèi)機(jī)的連接。與傳統(tǒng)的水冷冷水機(jī)組+熱水鍋爐+空調(diào)末端的中央空調(diào)相比，它具有設(shè)計(jì)、安裝、運(yùn)行及維護(hù)管理簡(jiǎn)單、方便的特點(diǎn)，另外它能將傳統(tǒng)中央空調(diào)系統(tǒng)的制冷機(jī)房、鍋爐房所占用的建筑空間節(jié)省出來(lái)，這在辦公、商場(chǎng)、賓館等房?jī)r(jià)、地價(jià)極高的建筑中，能夠節(jié)約一大筆初投資費(fèi)用并可以在投入運(yùn)行后獲得更多的收益。 多聯(lián)機(jī)空調(diào)目前在市場(chǎng)上得到了較為廣泛的應(yīng)用。但隨著應(yīng)用范圍的推廣，傳統(tǒng)的風(fēng)冷式多聯(lián)機(jī)系統(tǒng)的一些不足逐漸暴露出來(lái)。在這樣的背景下，一種新的多聯(lián)機(jī)空調(diào)形式在20世紀(jì)興起，這就是水冷式多聯(lián)機(jī)空調(diào)系統(tǒng)。實(shí)際上可以把它看成是多聯(lián)機(jī)與水源熱泵或水環(huán)熱泵相結(jié)合的一種空調(diào)系統(tǒng)。相比于傳統(tǒng)的風(fēng)冷式多聯(lián)機(jī)空調(diào)系統(tǒng)，水冷式多聯(lián)機(jī)的室外機(jī)可以實(shí)現(xiàn)分層設(shè)置，這樣就減小甚至消除了室外機(jī)和室內(nèi)機(jī)的高差，使之在高層建筑和多層建筑上可以得到推廣使用。此外，由于水冷式多聯(lián)機(jī)的制冷劑管路長(zhǎng)度縮短，制冷劑管路的阻力損失減小，因此由于制冷劑管路過(guò)長(zhǎng)而造成的制冷量衰減就會(huì)減小，從而增加了多聯(lián)機(jī)空調(diào)系統(tǒng)的能效比（EER）。水冷式多聯(lián)機(jī)相當(dāng)于在風(fēng)冷式多聯(lián)機(jī)的基礎(chǔ)上增加了一套水系統(tǒng)，因此勢(shì)必造成初投資的提高，因此水冷式多聯(lián)機(jī)在重慶地區(qū)的推廣和使用并沒(méi)有取得較大進(jìn)展。 本文將制冷劑管段的阻力損失計(jì)算作為研究重點(diǎn)，通過(guò)在一個(gè)已經(jīng)設(shè)計(jì)完成的風(fēng)冷式多聯(lián)機(jī)空調(diào)系統(tǒng)工程上進(jìn)行改造，，設(shè)計(jì)一套水冷式多聯(lián)機(jī)空調(diào)系統(tǒng)。分別計(jì)算兩種系統(tǒng)形式下有代表性的制冷劑管路的阻力損失，并分析計(jì)算各自的制冷量衰減和系統(tǒng)能效比（EER）下降，比較兩種系統(tǒng)形式的節(jié)能性。另外計(jì)算了兩種系統(tǒng)形式下的初投資和年運(yùn)行費(fèi)，比較兩種系統(tǒng)形式的經(jīng)濟(jì)性，從而指導(dǎo)重慶地區(qū)進(jìn)行水冷式多聯(lián)機(jī)空調(diào)系統(tǒng)的選用。
[Abstract]:The variable refrigerant flow air conditioning system (VRVN), developed in 1982 by Japan's Dajin Company, is a multi-on-line air conditioning system based on traditional room air conditioners. It realizes the connection between one or more outdoor units and multiple indoor units. Compared with the central air conditioning system at the end of the hot water boiler of the traditional water-cooled chillers, it has the characteristics of simple design, installation, operation and maintenance management and convenience. In addition, it can save the building space occupied by the refrigeration machine room and boiler room of the traditional central air conditioning system. This can be done in buildings with extremely high housing prices and land prices, such as offices, shopping malls, hotels, etc. It can save a lot of initial investment cost and make more profit when put into operation. Multi-on-line air conditioning has been widely used in the market at present. However, with the popularization of application scope, some shortcomings of traditional air-cooled multi-on-line system are gradually exposed. In 20th century, a new form of multi-on-line air conditioning came into being. This is the water-cooled multi-on-line air conditioning system. In fact, it can be regarded as a kind of air conditioning system combined with water source heat pump or water loop heat pump. Water-cooled multi-on-line outdoor units can be layered, which reduces or even eliminates the difference in height between outdoor and indoor units, making them widely used in high-rise buildings and multi-storey buildings. As the length of the refrigerant pipeline is shortened and the resistance loss of the refrigerant pipeline is reduced, the cooling capacity attenuation due to the long length of the refrigerant pipeline will be reduced. Thus, the energy efficiency ratio of the multi-line air conditioning system is increased. The water-cooled multi-line system is equivalent to adding a set of water system on the basis of air-cooled multi-on-line system, which will inevitably result in the increase of initial investment. Therefore, the popularization and use of water-cooled multi-line in Chongqing area has not made great progress. In this paper, the calculation of resistance loss in refrigerant pipe section is regarded as the key point of the research, and the project of air-cooled multi-on-line air conditioning system that has been designed and completed has been reformed. A set of water-cooled multi-on-line air conditioning system is designed. The resistance losses of representative refrigerant pipes under two systems are calculated, and the respective cooling capacity attenuation and the system energy efficiency ratio (EER) decrease are analyzed and calculated. In addition, the initial investment and annual operating cost of the two systems are calculated, and the economy of the two system forms is compared to guide the selection of water-cooled multi-on-line air conditioning system in Chongqing area.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TU831

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