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  本文選題：空氣源熱泵熱水器　切入點：水箱容量　出處：《西安建筑科技大學》2013年碩士論文　論文類型：學位論文

【摘要】：隨著我國經(jīng)濟的飛速發(fā)展和人民生活水平的快速提高，城鄉(xiāng)居民對生活熱水的需求逐步形成了一個量大面廣的熱水消費市場，作為一種高效節(jié)能裝置，，空氣源熱泵熱水器將在國內及國際市場中占據(jù)重要的位置�？諝庠礋岜脽崴饔捎谄涔�(jié)能環(huán)保的優(yōu)勢及其在階梯電價中“移峰填谷”的作用在生活熱水消費市場具有廣闊的發(fā)展空間。 本文對空氣源熱泵熱水器在不同工況下的運行特性做了較為詳細和深入的研究。文中對空氣源熱泵循環(huán)各部件建立穩(wěn)態(tài)流動能量方程，討論了實際熱泵循環(huán)中一些因素對熱泵循環(huán)性能的影響，如液體過冷、蒸氣過熱、壓力損失、不凝性氣體等對空氣源熱泵系統(tǒng)的制熱系數(shù)（COP）、壓縮機耗功等的影響；通過對實際工作過程的分析提出了改善空氣源熱泵系統(tǒng)各部件的運行狀態(tài)的方法，可提高熱泵熱水器機組的運行能效，達到機組優(yōu)化匹配的目的。 在理論分析的基礎上依靠課題組搭建的空氣源熱泵熱水器實驗臺對不同工況下機組的優(yōu)化匹配進行實驗研究。用不同的水箱水量與空氣源熱泵熱水器的2.5匹渦旋壓縮機進行配比實驗，得出了不同的配比關系下渦旋壓縮機的吸排氣溫度、吸排氣壓力、壓縮機耗功和制熱系數(shù)等的變化情況，通過對實驗數(shù)據(jù)的分析得出了300L水箱容量與2.5匹渦旋壓縮機為最佳匹配。 研究了具有氣液分離器的空氣源熱泵熱水器與沒有氣液分離器時空氣源熱泵熱水器的性能參數(shù)的區(qū)別，發(fā)現(xiàn)氣液分離器具有抑制壓縮機吸排氣溫度和吸排氣壓力升高的作用，指出在對空氣源熱泵熱水器的實驗及模擬研究中應合理考慮氣液分離器對機組性能的影響。本文還實驗研究了不同蒸發(fā)面積對機組各參數(shù)及性能的影響，從機組的性能參數(shù)及單蒸發(fā)器時較低的故障率可知過渡季節(jié)時單蒸發(fā)器比雙蒸發(fā)器更利于機組的安全、穩(wěn)定和高效運行。在風機風速與空氣源熱泵熱水器性能匹配關系的實驗研究中，通過調節(jié)蒸發(fā)器風速研究不同風速對空氣源熱泵熱水器各性能參數(shù)的影響，得出夏季運行較低的風速不僅能抑制由于吸排氣溫度和吸排氣壓力升高對壓縮機的不利影響使壓縮機安全穩(wěn)定的運行，又可以起到5%以上的節(jié)能作用。
[Abstract]:With the rapid development of our economy and the rapid improvement of people's living standard, the demand of urban and rural residents for domestic hot water has gradually formed a large amount of hot water consumption market, as a high-efficiency energy-saving device. Air source heat pump water heater will occupy an important position in domestic and international market. Air source heat pump water heater has the advantage of energy saving and environmental protection and its function of "shifting peak and filling valley" in step electricity price in the consumption market of domestic hot water. Has the broad development space. In this paper, the operating characteristics of air-source heat pump water heater under different working conditions are studied in detail and deeply. In this paper, the steady flow energy equation is established for the components of air-source heat pump cycle. The influence of some factors in the actual heat pump cycle on the performance of the heat pump is discussed, such as liquid supercooling, steam overheating, pressure loss, non-condensable gas, etc., which affect the heating coefficient of the air-source heat pump system and the power consumption of the compressor. Through the analysis of the actual working process, the method of improving the operation state of the components of the air source heat pump system is put forward, which can improve the operation efficiency of the heat pump water heater unit and achieve the purpose of optimizing the matching of the unit. On the basis of theoretical analysis, the optimal matching of air source heat pump water heater under different working conditions was studied by using the experimental bench built by the research group. 2.5 vortices of different water tanks and air source heat pump water heaters. The ratio experiment of rotary compressor is carried out, The variations of suction and exhaust temperature, suction pressure, compressor power consumption and heating coefficient of scroll compressor are obtained under different ratios. Through the analysis of the experimental data, it is concluded that the capacity of 300L water tank is the best match with 2.5 scroll compressors. The difference of the performance parameters between the air-source heat pump water heater with gas-liquid separator and the air-source heat pump water heater without the gas-liquid separator is studied. It is found that the gas-liquid separator can restrain the increase of the suction and exhaust temperature and the suction pressure of the compressor. It is pointed out that the influence of gas-liquid separator on unit performance should be reasonably considered in the experimental and simulation study of air-source heat pump water heater. The effects of different evaporation areas on the parameters and performance of the unit are also studied experimentally in this paper. From the performance parameters of the unit and the lower failure rate of the single evaporator, it can be seen that the single evaporator is more safe than the double evaporator in the transition season. Stable and efficient operation. In the experimental study of the matching relationship between fan wind speed and air source heat pump water heater performance, the influence of different wind speed on the performance parameters of air source heat pump water heater is studied by adjusting the evaporator wind speed. It is concluded that the lower wind speed in summer can not only restrain the adverse effects of suction and exhaust temperature and suction pressure on compressor operation, but also play an energy-saving role of more than 5%.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU822

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