發(fā)布時間：2018-05-16 17:43

  本文選題：吸收/壓縮 + 混合系統(tǒng)　； 參考：《浙江大學(xué)》2013年博士論文

【摘要】：隨著建筑能耗的日益增長,降低采暖空調(diào)能耗已成為降低建筑能耗的重點。采暖空調(diào)設(shè)備中以電驅(qū)動熱泵機(jī)組占主導(dǎo),提高電驅(qū)動熱泵的性能和能效,對于緩解電力峰谷差和城市電力緊張有重要意義。太陽能吸收熱泵具有季節(jié)優(yōu)勢,能顯著降低碳排放和緩解電力峰谷差,但具有不穩(wěn)定和效率低的特點。本文提出的基于太陽能的吸收壓縮混合系統(tǒng)融合了吸收子系統(tǒng)和壓縮子系統(tǒng)的各自優(yōu)點,并彌補(bǔ)了單獨子系統(tǒng)的不足。主要研究內(nèi)容如下： (1)闡述了機(jī)械熱泵系統(tǒng)優(yōu)勢和面臨的矛盾,以及太陽能、余熱廢熱的應(yīng)用情況,分析得出吸收壓縮混合熱泵系統(tǒng)的意義,并介紹了吸收-壓縮混合系統(tǒng)的國內(nèi)外研究現(xiàn)狀。 (2)闡述了夏冬兩季吸收壓縮混合系統(tǒng)的多種運行模式,計算了新型吸收壓縮混合制冷制熱循環(huán)的熱力性能,分析了混合循環(huán)制冷(制熱)COP和吸收子系統(tǒng)COP隨發(fā)生溫度、冷凝溫度和蒸發(fā)溫度的變化,并比較了混合循環(huán)和壓縮子系統(tǒng)的制冷制熱循環(huán)性能。 (3)搭建了太陽能吸收壓縮混合熱泵及其控制系統(tǒng)實驗臺,實驗研究了混合熱泵實驗裝置的制冷制熱性能隨發(fā)生溫度、冷凝溫度和蒸發(fā)溫度的變化關(guān)系,實驗得出隨著發(fā)生溫度、冷凝溫度和蒸發(fā)溫度的升高,混合循環(huán)熱泵的制冷(制熱)量和制冷(制熱)COP均大于壓縮子系統(tǒng)的,證明混合循環(huán)系統(tǒng)相對于單獨的壓縮子系統(tǒng)更具有優(yōu)勢。 (4)發(fā)生器是吸收子系統(tǒng)中的重要部件,進(jìn)行了不同質(zhì)量流量稀溶液對發(fā)生熱性能影響的實驗,得出存在最佳稀溶液循環(huán)量使得發(fā)生熱最大。同時,對發(fā)生器管外對流換熱系數(shù)隨稀溶液濃度和噴淋密度的變化趨勢進(jìn)行了實驗,得出發(fā)生器管外對流換熱系數(shù)隨著稀溶液濃度的增加和噴淋密度的增加而增大,管外對流換熱系數(shù)的變化范圍為150-365W/m2.℃。
[Abstract]:With the increasing energy consumption of the building, reducing the energy consumption of heating air conditioning has become the key to reduce the energy consumption of the building. The electric driven heat pump unit is dominant in the heating and air conditioning equipment, improving the performance and energy efficiency of the electric driven heat pump. It is of great significance to alleviate the peak and valley difference and the urban power shortage. The absorption and compression hybrid system based on solar energy combines the advantages of the absorption and compression subsystem, and makes up for the shortcomings of the single subsystem. The main contents are as follows:
(1) the advantages and contradictions of the mechanical heat pump system, as well as the application of solar energy and waste heat waste heat are expounded. The significance of the absorption and compression hybrid heat pump system is analyzed, and the research status of the absorption compression hybrid system at home and abroad is introduced.
(2) the various operating modes of the absorption and compression mixing system in the two season of summer and winter are expounded. The thermodynamic performance of the new absorption and compression mixing refrigeration system is calculated. The changes of the mixed cycle refrigeration (heating) COP and the absorption subsystem COP with the occurrence temperature, the condensation temperature and the evaporation temperature are analyzed, and the system of mixed cycle and the compression subsystem is compared. Cold heat cycle performance.
(3) the experimental platform of a solar absorption and compression hybrid heat pump and its control system was set up. The relationship between the temperature, the condensation temperature and the evaporation temperature of the cooling heat of the mixed heat pump experimental device was studied. The experimental results showed that the cooling (heat production) of the mixed cycle heat pump was increased with the increase of the temperature, the condensation temperature and the evaporation temperature. And the refrigeration (heating) COP is larger than the compression subsystem, which proves that the hybrid cycle system has more advantages than the compression subsystem alone.
(4) the generator is an important component in the absorption subsystem. The experiment on the effect of different mass flow dilute solution on the thermal performance is carried out. It is concluded that the best dilute solution circulation can make the maximum heat occur. At the same time, the variation trend of the convection heat transfer coefficient outside the generator tube with the concentration of dilute solution and the spray density is experimentation, and the generator is obtained. The coefficient of convective heat transfer outside the tube increases with the increase of dilute solution concentration and spray density, and the convection heat transfer coefficient outside the tube ranges from 150-365W/m2. degrees.

【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2013
【分類號】：TU832.17;TK519

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 曹毅然,張小松,鮑鶴靈;太陽能驅(qū)動的壓縮吸收式復(fù)合制冷循環(huán)分析[J];流體機(jī)械;2002年10期

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本文編號：1897810