【摘要】：空調(diào)除濕設(shè)備的耗能在總能源需求中占有很大比例,在建筑耗能中更是如此,轉(zhuǎn)輪除濕系統(tǒng)結(jié)合了干燥劑除濕和冷卻除濕方式,綜合兩者的優(yōu)勢(shì),能達(dá)到很好的效果,傳統(tǒng)轉(zhuǎn)輪除濕系統(tǒng)通過(guò)電加熱將空氣加熱完成再生過(guò)程,需要消耗大量電能。本文通過(guò)轉(zhuǎn)輪吸濕材料的重新選擇和熱力循環(huán)過(guò)程的設(shè)計(jì)降低轉(zhuǎn)輪系統(tǒng)的能耗,充分利用低品位能源,以達(dá)到節(jié)能的目的。本文首先討論了傳統(tǒng)轉(zhuǎn)輪除濕系統(tǒng)所存在的問(wèn)題,并針對(duì)性提出解決方案——低溫再生轉(zhuǎn)輪除濕系統(tǒng),通過(guò)轉(zhuǎn)輪的改進(jìn)和冷凝熱的回收來(lái)實(shí)現(xiàn)節(jié)能,然后對(duì)標(biāo)準(zhǔn)設(shè)計(jì)工況下的耗能進(jìn)行計(jì)算,結(jié)果顯示,夏季工況下低溫再生轉(zhuǎn)輪除濕系統(tǒng)比傳統(tǒng)系統(tǒng)節(jié)能26%。在系統(tǒng)設(shè)計(jì)的基礎(chǔ)上,通過(guò)吸濕劑的傳熱傳質(zhì)過(guò)程分析,與冷卻設(shè)備模型相結(jié)合建立轉(zhuǎn)輪除濕系統(tǒng)模型,從結(jié)果中可以看出,入口溫濕度會(huì)導(dǎo)致送風(fēng)濕度的增加,而再生溫度增加會(huì)導(dǎo)致送風(fēng)濕度的降低;再生溫度的影響要大于入口狀態(tài)的影響;轉(zhuǎn)輪轉(zhuǎn)速和風(fēng)速的降低都能提高系統(tǒng)除濕能力,但在實(shí)際使用中要綜合其他因素選擇適當(dāng)?shù)膮?shù)。根據(jù)以上的設(shè)計(jì),搭建實(shí)驗(yàn)臺(tái),對(duì)影響系統(tǒng)性能的幾個(gè)重要參數(shù)的變化,綜合評(píng)價(jià)了系統(tǒng)的性能;實(shí)驗(yàn)結(jié)果表明,輪前溫度對(duì)系統(tǒng)平衡時(shí)間都有影響,但再生溫度影響更大;處理溫度的提高對(duì)除濕量和DCOP皆有不利影響;再生溫度和再生風(fēng)量的增加使系統(tǒng)的吸濕性能提高,DCOP值則是先提高后降低。低溫再生轉(zhuǎn)輪除濕系統(tǒng)的冷凝除濕量比例較大,依然有改進(jìn)的可能,本文提出了兩級(jí)轉(zhuǎn)輪除濕系統(tǒng),在達(dá)到相同的除濕效果的情況下,降低了冷凝除濕量,耗能也降低了14.4%。但系統(tǒng)的復(fù)雜度有所提高。
[Abstract]:The energy consumption of air conditioning dehumidification equipment accounts for a large proportion of the total energy demand, especially in building energy consumption. The rotary dehumidification system combines desiccant dehumidification with cooling dehumidification, which combines the advantages of both, and can achieve very good results. The traditional rotary dehumidification system uses electric heating to heat the air to complete the regeneration process, which consumes a lot of electric energy. In this paper, the energy consumption of the runner system is reduced by the re-selection of the humidity-absorbing material of the runner and the design of the thermodynamic cycle process, and the low grade energy is fully utilized to achieve the purpose of energy saving. This paper first discusses the problems existing in the traditional rotary dehumidification system, and puts forward a solution, that is, the low-temperature regenerative rotary dehumidification system, which can save energy through the improvement of the runner and the recovery of condensate heat. Then the energy consumption under the standard design condition is calculated. The results show that the low temperature regenerative runner dehumidification system is more energy efficient than the traditional system in summer. On the basis of the system design, through the analysis of the heat and mass transfer process of the moisture absorbent, the model of the rotary dehumidification system is established in combination with the cooling equipment model. It can be seen from the results that the inlet temperature and humidity will lead to the increase of the air supply humidity. However, the increase of regeneration temperature will lead to the decrease of air humidity. The influence of regeneration temperature is greater than that of inlet state, and the decrease of speed and wind speed of runner can improve the dehumidification ability of the system, but other factors should be integrated to select appropriate parameters in practical use. According to the above design, the experiment bench is built to evaluate the performance of the system for several important parameters affecting the performance of the system, and the experimental results show that the temperature in front of the wheel has an effect on the equilibrium time of the system, but the temperature of regeneration has a greater effect on the performance of the system. The increase of treatment temperature had adverse effect on the dehumidification amount and DCOP, and the increase of regeneration temperature and regenerated air rate increased the hygroscopicity of the system, while the DCOP value increased first and then decreased. The ratio of condensation dehumidification to dehumidification in low-temperature regenerative runner dehumidification system is large, and there is still possibility to improve it. In this paper, a two-stage runner dehumidification system is put forward, which can reduce the condensing dehumidification amount under the same dehumidification effect. Energy consumption was also reduced by 14. 4%. But the complexity of the system has been improved.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TB657.2;TB4

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相關(guān)期刊論文 前1條

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本文編號(hào)：2313160