基于高溫?zé)岜迷偕霓D(zhuǎn)輪除濕空調(diào)機(jī)組的設(shè)計(jì)與性能研究
發(fā)布時(shí)間：2018-03-11 18:12
本文選題：高溫?zé)岜?/strong> 切入點(diǎn)：除濕轉(zhuǎn)輪 出處：《天津大學(xué)》2014年博士論文 論文類型：學(xué)位論文
【摘要】：本文提出高溫?zé)岜棉D(zhuǎn)輪除濕空調(diào)系統(tǒng)，立足于硅膠轉(zhuǎn)輪的凈化及除濕作用，利用熱泵的蒸發(fā)器對(duì)熱空氣降溫冷卻，使其達(dá)到送風(fēng)溫度；同時(shí)利用熱泵的冷凝器釋放的熱量加熱再生空氣，使系統(tǒng)內(nèi)部實(shí)現(xiàn)冷量和熱量的相互抵消，實(shí)現(xiàn)空氣溫濕度獨(dú)立處理，改善室內(nèi)空氣品質(zhì)，達(dá)到系統(tǒng)節(jié)能的目的。 通過(guò)理論分析確定了空調(diào)系統(tǒng)供冬夏季使用的三種運(yùn)行模式，并根據(jù)實(shí)驗(yàn)研究的數(shù)據(jù)，分別驗(yàn)證了單級(jí)系統(tǒng)和雙級(jí)系統(tǒng)的可行性，最終確定采用單級(jí)系統(tǒng)進(jìn)行實(shí)驗(yàn)，并依據(jù)設(shè)計(jì)流程制造高溫?zé)岜棉D(zhuǎn)輪除濕空調(diào)機(jī)組。 對(duì)自主研發(fā)的工質(zhì)BY-3的性能進(jìn)行了測(cè)試，驗(yàn)證了其高溫特性，并采用BY-3作為工質(zhì)，從硅膠轉(zhuǎn)輪的除濕效果的角度，評(píng)價(jià)熱泵和轉(zhuǎn)輪的匹配性，得出轉(zhuǎn)輪在再生溫度為60~65℃之間時(shí)，絕熱效率最高。隨后，研究了高溫?zé)岜棉D(zhuǎn)輪除濕空調(diào)系統(tǒng)對(duì)于氣候變化的適應(yīng)性及性能。研究結(jié)果表明，當(dāng)室外溫度不超過(guò)36℃時(shí)，空調(diào)系統(tǒng)的送風(fēng)溫度滿足20±1℃的要求，，該系統(tǒng)獲得的再生溫度滿足除濕轉(zhuǎn)輪的再生要求。轉(zhuǎn)輪除濕效率較高，夏季工況平均除濕效率為32.7%。室外熱濕環(huán)境和再生風(fēng)量對(duì)熱泵的性能影響較大，高溫?zé)岜玫淖畲笾茻嵝阅芟禂?shù)為2.76，最大制冷性能系數(shù)為2.26。 重點(diǎn)分析了動(dòng)態(tài)運(yùn)行的空調(diào)系統(tǒng)中除濕轉(zhuǎn)輪的性能。結(jié)果表明，相比室外空氣溫度和再生風(fēng)量與處理風(fēng)量比率，室外空氣含濕量和再生溫度對(duì)評(píng)價(jià)指標(biāo)（MRC、ηdeh、DCOP、SER）的影響更大，回歸方程的擬合效果較好，平均相對(duì)誤差和最大相對(duì)誤差均在合理范圍內(nèi)。 對(duì)高溫?zé)岜棉D(zhuǎn)輪除濕空調(diào)系統(tǒng)進(jìn)行了分析。結(jié)果表明，壓縮機(jī)的熱力完善度和效率均最低，需要對(duì)壓縮機(jī)進(jìn)行技術(shù)改造，或采用變頻壓縮機(jī)。高溫?zé)岜棉D(zhuǎn)輪除濕系統(tǒng)的效率為8.17%，比添加加熱器的除濕轉(zhuǎn)輪系統(tǒng)的效率提高近167%，說(shuō)明利用高溫?zé)岜美淠裏嶙鳛樵偕鸁嵩纯擅黠@提高系統(tǒng)能源使用效率。 使用Visual Basic軟件建立常規(guī)再熱空調(diào)系統(tǒng)的數(shù)學(xué)模型，并對(duì)數(shù)學(xué)模型進(jìn)行驗(yàn)證，將高溫?zé)岜棉D(zhuǎn)輪除濕空調(diào)系統(tǒng)與常規(guī)再熱空調(diào)系統(tǒng)進(jìn)行性能比較，標(biāo)準(zhǔn)工況下，高溫?zé)岜棉D(zhuǎn)輪除濕空調(diào)系統(tǒng)節(jié)能百分比為38.8%。通過(guò)對(duì)高溫?zé)岜棉D(zhuǎn)輪除濕系統(tǒng)節(jié)能趨勢(shì)的分析，看出該系統(tǒng)在干熱環(huán)境下比濕熱環(huán)境下更具有節(jié)能潛力。
[Abstract]:In this paper, the desiccant air conditioning system of high temperature heat pump runner is put forward. Based on the purification and dehumidification function of silica gel runner, the heat pump evaporator is used to cool down the hot air and make it reach the air supply temperature. At the same time, the heat released from the condenser of heat pump is used to heat the regenerated air, which makes the cooling and heat cancel each other in the system, realizes the independent treatment of air temperature and humidity, improves the indoor air quality, and achieves the purpose of energy saving in the system. Through theoretical analysis, three operation modes of air conditioning system for winter and summer are determined. According to the experimental data, the feasibility of single stage system and two stage system are verified, and the single stage system is finally adopted to carry out the experiment. And according to the design process manufacturing high-temperature heat pump runner dehumidification air-conditioning unit. The performance of self-developed working fluid BY-3 is tested and its high temperature characteristic is verified. The matching of heat pump and runner is evaluated by using BY-3 as working medium from the angle of dehumidification effect of silica gel runner. The highest adiabatic efficiency of the runner is obtained when the regeneration temperature is between 60 鈩
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