本文選題：江水源熱泵　切入點：時間序列分析　出處：《重慶大學》2014年碩士論文

【摘要】：取水系統(tǒng)是江水源熱泵系統(tǒng)的重要組成部分，取水的可靠性是江水源熱泵系統(tǒng)穩(wěn)定運行的重要保障，占江水源熱泵系統(tǒng)初投資及能耗比例較高的取水系統(tǒng)的優(yōu)化設計及優(yōu)化運行也關(guān)系到江水源熱泵系統(tǒng)的經(jīng)濟性，因此具有安全性和經(jīng)濟性的重要意義。 取水系統(tǒng)包括水源、取水管路、取水泵、熱泵機組、水處理設備等組成部分，本文從江水源熱泵系統(tǒng)應用的角度研究江水水源的水位、水溫的特性，取水泵及熱泵機組的變工況的能耗特性，在此基礎(chǔ)上，從取水泵與熱泵機組運行能耗的角度對取水系統(tǒng)中的取水泵進行優(yōu)化選型的研究。本文的研究主要進行了下列幾個方面的工作： 1）對長江重慶段的江水水溫與水位時間序列進行了分析，建立的模型適用于水源水位等數(shù)據(jù)缺失的情況下的補插或進行短期預測。 2）利用時間序列分析方法中的X-11過程對長江重慶段的水源水位、水溫序列的趨勢因素、季節(jié)因素及不規(guī)則因素進行了提取及研究，，揭示其月度序列的特征及基本趨勢。針對江水源熱泵系統(tǒng)中制冷及制熱工況的時間分布及系統(tǒng)運行特點，分別計算了制冷季和制熱季時段內(nèi)的水位資料的頻率分布，得出了江水逐日水位經(jīng)驗頻率曲線及相關(guān)水位分布頻率統(tǒng)計數(shù)據(jù)。 3）綜合分析取水系統(tǒng)中的取水泵變頻工況下，變頻器、配套電機、取水泵的性能變化情況，建立了取水泵在定頻及變頻工況下的能耗模型�？偨Y(jié)研究以往的水源熱泵機組能效模型，提出應該綜合考慮制冷劑回路、壓縮機的組合情況對機組能效的影響，根據(jù)各制冷劑回路或壓縮機運行的組合情況，對機組在不同負荷率范圍內(nèi)的性能進行分段擬合，并在不同的運行條件下分別考慮水溫、水量等因素對機組能效的影響，可以有效的提高擬合精度。 4）依據(jù)實際項目的熱泵機組配置及系統(tǒng)負荷的分布情況，結(jié)合水源水位、水溫的概率分布，描述了取水泵的運行工況范圍。根據(jù)水泵的優(yōu)化選型原則，利用江水源熱泵系統(tǒng)的取水系統(tǒng)能耗模型，編制計算程序，分析各工況點的運行情況，并通過實際算例對該程序的有效性進行了驗證。
[Abstract]:The water intake system is an important part of the river water source heat pump system, and the reliability of the water intake system is an important guarantee for the steady operation of the river water source heat pump system.The optimal design and operation of the water intake system, which accounts for the initial investment and high energy consumption of the river water source heat pump system, is also related to the economy of the river water source heat pump system, so it is of great significance for the safety and economy of the water source heat pump system.The water intake system includes water source, water intake pipeline, pumping pump, heat pump unit, water treatment equipment and so on. This paper studies the characteristics of water level and water temperature of river water source from the point of view of the application of river water source heat pump system.On the basis of the energy consumption characteristics of water pump and heat pump unit under different operating conditions, the optimal selection of water intake pump in water intake system is studied from the angle of energy consumption of pump and heat pump unit.The main work of this paper is as follows:1) the time series of water temperature and water level in Chongqing section of Yangtze River are analyzed, and the established model is suitable for interpolation or short-term prediction in the absence of water level and other data.2) using the X-11 process in the time series analysis method, the trend factors of water level, water temperature, seasonal factors and irregular factors in the Chongqing section of the Yangtze River are extracted and studied, and the characteristics and basic trends of the monthly series are revealed.According to the time distribution of refrigeration and heating conditions and the characteristics of system operation in river water source heat pump system, the frequency distribution of water level data in refrigeration season and heating season are calculated respectively.The empirical frequency curve of daily water level and the statistical data of relative water level distribution frequency are obtained.3) the energy consumption model of the pump in the fixed frequency and frequency conversion condition is established by synthetically analyzing the performance changes of the pump in the frequency conversion condition, the frequency converter, the matching motor and the pump in the water intake system.The energy efficiency model of water source heat pump unit is summarized and studied. It is suggested that the refrigerant loop and the effect of compressor combination on unit energy efficiency should be considered synthetically, according to the combination of each refrigerant loop or compressor,The performance of the unit in the range of different load rates is fitted by stages, and the effect of water temperature and water quantity on the efficiency of the unit is considered under different operating conditions, which can effectively improve the fitting accuracy.4) according to the configuration of heat pump unit and the distribution of system load, combined with the probability distribution of water level and water temperature, the operating condition range of the pump is described.According to the principle of optimal selection of water pump, using the energy consumption model of water intake system of river water source heat pump system, the calculation program is compiled, and the operating conditions of each working point are analyzed, and the validity of the program is verified by practical examples.
【學位授予單位】：重慶大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU83

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