發(fā)布時(shí)間：2018-02-09 15:11

  本文關(guān)鍵詞： 單一冷源 獨(dú)立新風(fēng) 冷量比 空調(diào)系統(tǒng)節(jié)能　出處：《天津商業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：目前,空調(diào)已經(jīng)逐漸進(jìn)入人類生產(chǎn)生活的各個(gè)角落�？諝庹{(diào)節(jié)系統(tǒng)給我們的生活提供了舒適的環(huán)境,而且是人們?cè)絹碓揭蕾嚨沫h(huán)境。但是,空調(diào)系統(tǒng)的能耗也引起了各界人士的注意,特別是在當(dāng)今能源危機(jī)的大時(shí)代下。建筑類型、空調(diào)系統(tǒng)本身的性能、使用的室內(nèi)外環(huán)境等都影響著空調(diào)能源消耗。以上這些因素國內(nèi)外諸多學(xué)者以及專家已做了相關(guān)的研究。本實(shí)驗(yàn)在指導(dǎo)老師的指導(dǎo)下,就空調(diào)系統(tǒng)的冷源上做研究,通過實(shí)驗(yàn)測(cè)出冷量的配比,并且在此冷量配比的工況下進(jìn)行兩個(gè)冷源的實(shí)驗(yàn)。單一冷源獨(dú)立新風(fēng)空調(diào)系統(tǒng),是指本實(shí)驗(yàn)只用一個(gè)冷水機(jī)組作為空調(diào)系統(tǒng)冷源,冷源冷凍水依次通過串聯(lián)的除濕機(jī)組和降溫機(jī)組,室外新風(fēng)通過自制除濕機(jī)組時(shí),空氣中的水蒸氣成分在換熱器表面結(jié)露,凝結(jié)水順著換熱器底部的小孔以及管道排出,得到的低溫、較干燥的空氣經(jīng)風(fēng)道傳入實(shí)驗(yàn)室內(nèi)。室內(nèi)使用風(fēng)機(jī)盤管,作為降溫機(jī)組。室內(nèi)原有空氣和新風(fēng)混合后,空氣在風(fēng)盤風(fēng)機(jī)的作用下,不斷經(jīng)過風(fēng)機(jī)盤管的換熱器進(jìn)行冷卻降溫,并且使得室內(nèi)空氣循環(huán)流動(dòng),室內(nèi)各處空氣的溫濕度基本均勻一致。系統(tǒng)的除濕機(jī)組和降溫機(jī)組的冷媒水串聯(lián)在一起,冷媒水先經(jīng)過除濕機(jī)組,除濕機(jī)組下部設(shè)有出水孔和排水管,凝結(jié)析出的水可以直接排出。出除濕機(jī)組后,冷媒水水溫升高再進(jìn)入室內(nèi)風(fēng)機(jī)盤管機(jī)組,最后再經(jīng)回水管返回到冷源的冷媒水水箱,完成循環(huán)。冷凍水的溫度升高后,就可以保證在室內(nèi)的風(fēng)機(jī)盤管機(jī)組的換熱器表面不會(huì)產(chǎn)生結(jié)露,即是在干工況下運(yùn)行,室內(nèi)盤管處就不會(huì)有凝水析出,避免了盤管存濕垢以及微生物滋生等問題。并且從初投資上,不需要購置第二套冷源機(jī)組,以及獨(dú)立的高溫冷媒供回水管路,同時(shí),節(jié)省了第二臺(tái)冷源的機(jī)組的能耗。根據(jù)實(shí)驗(yàn)方案,繪制實(shí)驗(yàn)結(jié)構(gòu)系統(tǒng)圖,按照?qǐng)D紙搭設(shè)實(shí)驗(yàn)臺(tái),實(shí)驗(yàn)中準(zhǔn)備兩臺(tái)冷媒機(jī)組,通過控制閥門的開啟與關(guān)閉,切換單一冷源和雙冷源模式,先做對(duì)照實(shí)驗(yàn),之后依次改變冷媒水流量和新風(fēng)風(fēng)量,使用自制的電加熱設(shè)備調(diào)控室內(nèi)空氣的溫度,用加濕器調(diào)節(jié)室內(nèi)空氣的相對(duì)濕度。各組實(shí)驗(yàn)開始時(shí)均達(dá)到同一狀態(tài),分別計(jì)算各個(gè)實(shí)驗(yàn)工況下,系統(tǒng)的除濕量和耗冷量,分析對(duì)比實(shí)驗(yàn)結(jié)果,結(jié)果表明:當(dāng)送入實(shí)驗(yàn)室的新風(fēng)量為室內(nèi)總風(fēng)量的35%時(shí),是最佳新風(fēng)比。在此工況下,使用單一冷源比雙冷源系統(tǒng),能源消耗增加0.2%,兩種系統(tǒng)能耗差異不大,但單一冷源空調(diào)系統(tǒng)節(jié)省了冷源設(shè)備,以及相關(guān)管路。在一些適當(dāng)場(chǎng)所,推薦使用單一冷源串聯(lián)除濕和降溫機(jī)組的空調(diào)系統(tǒng)。
[Abstract]:At present, air conditioning has gradually entered every corner of human production and life. Air conditioning system provides comfortable environment for our life, and it is more and more dependent on environment. However, The energy consumption of air conditioning systems has also attracted the attention of people from all walks of life, especially in the great era of energy crisis. The types of buildings, the performance of air conditioning systems themselves, These factors have been studied by many scholars and experts at home and abroad. Under the guidance of the instructor, this experiment has done research on the cold source of air conditioning system. Through the experiment, the ratio of cooling quantity is measured, and the experiment of two cold sources is carried out under the condition of the ratio of cold quantity. The single cold source independent fresh air conditioning system means that only one chiller is used as the cold source of the air conditioning system in this experiment. The cold source chilled water passes in turn through the series dehumidifier group and the cooling unit. When the outdoor fresh air passes through the self-made dehumidifier group, the water vapor in the air condenses on the surface of the heat exchanger, and the condensate water is discharged along the holes and pipes at the bottom of the heat exchanger. The resulting low temperature, drier air was passed through the air duct into the laboratory. The fan coil unit was used as the cooling unit. After the original air and fresh air were mixed in the room, the air was under the action of the air disk fan. Continuous cooling and cooling through the heat exchanger of the fan coil unit, and making the indoor air circulate and flow, the temperature and humidity of the air around the room are basically uniform. The dehumidifier unit of the system and the cooling water of the cooling unit are in series together. Refrigerant water passes through the dehumidifier group first, and the lower part of the dehumidifier group is provided with outlet holes and drain pipes. The condensed and precipitated water can be discharged directly. After the dehumidifier group, the refrigerant water temperature rises and then enters the indoor fan coil unit. Finally, return to the coolant water tank of the cold source through the backwater pipe to complete the circulation. After the temperature of the frozen water is raised, it can be ensured that the surface of the heat exchanger of the indoor fan coil unit will not be exposed, that is, it will operate under dry working conditions. There will be no condensate in the room, avoiding problems such as wet deposit and microbial breeding. In addition, there is no need to purchase a second set of cold source units and separate high-temperature refrigerant for backwater pipes, in the meantime, According to the experimental scheme, draw the experimental structure system diagram, set up the experimental platform according to the drawing, prepare two refrigerant units in the experiment, and control the opening and closing of the valve. Switch between single cold source and double cold source mode, first do a controlled experiment, then change the water flow rate of refrigerant and fresh air volume in turn, and use a self-made electric heating device to control the temperature of indoor air. The relative humidity of indoor air is regulated by humidifier. Each group of experiments reaches the same state at the beginning of the experiment. The dehumidification amount and the cooling consumption of the system under each experimental condition are calculated separately, and the experimental results are analyzed and compared. The results show that the best fresh air ratio is when the fresh air volume sent into the laboratory is 35% of the total indoor air volume. Under this condition, the energy consumption of the two systems increases by 0.2% when the single cold source is used compared with the double cold source system, and there is no significant difference between the two systems in energy consumption. But the single cold source air conditioning system saves the cold source equipment and the related pipeline. In some suitable places, it is recommended to use the single cold source series dehumidification and cooling unit air conditioning system.
【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】：2017
【分類號(hào)】：TB657.2

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相關(guān)期刊論文 前10條

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本文編號(hào)：1498217