新型干式工業(yè)空調(diào)系統(tǒng)的研究
發(fā)布時間：2018-05-08 02:39
本文選題：高溫?zé)岜?/strong> + 標(biāo)準(zhǔn)焓差室��； 參考：《天津大學(xué)》2014年博士論文
【摘要】：整合硅膠轉(zhuǎn)輪的空氣凈化作用及熱泵的高效集熱并轉(zhuǎn)移熱量的優(yōu)勢，本研究以研制能提供較高冷凝風(fēng)溫的空氣源熱泵技術(shù)為核心，提出自我再生的轉(zhuǎn)輪除濕與高溫?zé)岜寐?lián)合空調(diào)系統(tǒng)，高溫?zé)岜脤檗D(zhuǎn)輪提供全部的再生能源，有效地解決轉(zhuǎn)輪再生能源的來源、品質(zhì)和耗量，同時承擔(dān)系統(tǒng)的空調(diào)冷負(fù)荷，在系統(tǒng)內(nèi)部實(shí)現(xiàn)冷熱量的抵減，完成系統(tǒng)的自我再生及除濕冷卻，達(dá)到節(jié)能的目的。為轉(zhuǎn)輪除濕空調(diào)系統(tǒng)的推廣運(yùn)用提供依據(jù)。 熱泵的研制包括工質(zhì)優(yōu)選、部件優(yōu)化及每一步改進(jìn)后的性能測試。經(jīng)過物性計(jì)算和工質(zhì)比選，確定適宜在高溫區(qū)間運(yùn)行的R142b作為工質(zhì)。經(jīng)過毛細(xì)管的比選、加大冷凝器的換熱面積等一系列改進(jìn)措施優(yōu)化系統(tǒng)部件。借助于標(biāo)準(zhǔn)焓差室模擬空氣狀態(tài)的功能，將每一項(xiàng)改進(jìn)后的熱泵置于焓差室中測試其運(yùn)行參數(shù)及性能。最終當(dāng)熱泵蒸發(fā)器處于模擬轉(zhuǎn)輪處理空氣出口狀態(tài)（溫度為40℃、45℃、50℃）時，冷凝出風(fēng)溫度最高達(dá)79.96℃，完全能滿足硅膠轉(zhuǎn)輪的再生要求，壓縮機(jī)的排氣壓力仍在合理的運(yùn)行范圍內(nèi)，，壓縮比在4.5～5.5之間。實(shí)驗(yàn)驗(yàn)證了熱泵在聯(lián)合系統(tǒng)中運(yùn)行的匹配性。 建立了硅膠轉(zhuǎn)輪吸濕時熱量、水分的一維傳熱傳質(zhì)數(shù)學(xué)模型；建立了系統(tǒng)仿真的部件模型和整機(jī)模型；利用MATLAB的科學(xué)計(jì)算功能編制各部件及整機(jī)計(jì)算程序，計(jì)算聯(lián)合系統(tǒng)的運(yùn)行參數(shù)及系統(tǒng)能耗，所得模擬值與實(shí)驗(yàn)結(jié)果吻合較好，滿足系統(tǒng)研究的精度要求。通過模擬計(jì)算和分析，可以獲得聯(lián)合系統(tǒng)隨室內(nèi)外空氣狀態(tài)變化的適應(yīng)性運(yùn)行和系統(tǒng)性能。在名義工況下，將聯(lián)合系統(tǒng)與目前常規(guī)再熱系統(tǒng)進(jìn)行比較，除了對空氣的凈化過濾的強(qiáng)勢之外，顯著的優(yōu)勢在于溫度和濕度的分別控制使系統(tǒng)具有明顯的節(jié)能效應(yīng)，在名義工況下比常規(guī)系統(tǒng)節(jié)能35.1％，能效比提高38.1％。并隨著系統(tǒng)濕負(fù)荷的增加，節(jié)能效應(yīng)將進(jìn)一步提高。
[Abstract]:Integrating the air purification function of silica gel runner and the advantage of high efficiency heat collection and heat transfer of heat pump, this study focuses on the development of air source heat pump technology which can provide high condensing air temperature. The self-regenerated rotary wheel dehumidification and high temperature heat pump combined air conditioning system is put forward. The high temperature heat pump will provide all the renewable energy for the runner, effectively solve the source, quality and consumption of the rotary wheel renewable energy, and bear the cooling load of the air conditioning system at the same time. In the system, the cooling heat is offset, the self-regeneration and dehumidification cooling are completed, and the purpose of energy saving is achieved. It provides the basis for the popularization and application of rotary dehumidification air conditioning system. The development of heat pump includes working fluid selection, component optimization and performance test after each step improvement. Through physical property calculation and working fluid selection, R142b, which is suitable for operation in high temperature range, is determined as working fluid. A series of improved measures such as increasing the heat transfer area of the condenser and optimizing the system components were carried out by comparing and selecting the capillary. With the aid of the function of simulating the air state in the standard enthalpy difference chamber, each improved heat pump is placed in the enthalpy difference chamber to test its operation parameters and performance. In the end, when the heat pump evaporator is in the state of air outlet of simulated runner treatment (the temperature is 40 鈩
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