本文選題：蒸發(fā)冷卻　切入點：分離式熱管　出處：《東北大學》2014年碩士論文　論文類型：學位論文

【摘要】：空調器作為調節(jié)室內溫濕度、潔凈度等參數(shù)的空氣處理器,是連接服務對象與室外環(huán)境的橋梁,近年來發(fā)展迅速。本文選取機房空調和房間空調器為代表,對其能耗水平和發(fā)展現(xiàn)狀進行調研,在總結兩種空調器現(xiàn)有的節(jié)能技術基礎上,結合服務對象溫濕度要求,提出了一種將蒸氣壓縮式制冷技術、分離式熱管技術、蒸發(fā)冷卻技術有機融合在同一系統(tǒng)的蒸發(fā)冷卻式復合空調系統(tǒng)(以下簡稱復合空調系統(tǒng))。本文針對該蒸發(fā)冷卻式復合空調系統(tǒng)對以下幾個方面展開研究：首先,對蒸發(fā)冷卻式復合空調系統(tǒng)進行系統(tǒng)構建,并與傳統(tǒng)機房空調系統(tǒng)相比,對其節(jié)能性進行定性分析。由于工藝性機房空調對室內溫濕度和潔凈度要求較高,因此選擇機房空調設計標準作為設計準則,以最不利熱管工況作為設計工況,對復合空調系統(tǒng)中主要部件進行設計計算,并將設計參數(shù)在蒸氣壓縮式制冷工況下進行校核,以確保復合空調系統(tǒng)在每種制冷模式下均能發(fā)揮最優(yōu)性能,進而保證復合空調系統(tǒng)全年運行的可靠性和高效性。其次,對復合空調系統(tǒng)中各主要部件建立數(shù)學模型,其中,為了便于研究兩器(風冷蒸發(fā)器和蒸發(fā)式冷凝器)內部狀態(tài)參數(shù)的變化規(guī)律,分別對兩器建立穩(wěn)態(tài)分布參數(shù)模型,并對模型進行離散求解。同時對渦旋壓縮機和熱力膨脹閥建立集中參數(shù)模型,并對模型進行離散求解。再次,根據(jù)復合空調系統(tǒng)各部件數(shù)學模型,分別構建復合空調系統(tǒng)各制冷模式下的動態(tài)運行數(shù)學模型,研究確定模型的求解流程。在此基礎上,建立復合空調系統(tǒng)全年動態(tài)運行數(shù)學模型,以沈陽地區(qū)為例,對復合空調系統(tǒng)全年運行性能進行模擬仿真,并與傳統(tǒng)機房空調系統(tǒng)進行對比,分析復合空調系統(tǒng)的節(jié)能性。最后,分別選取我國典型氣候條件地區(qū)(沈陽、北京、長沙、廣州、昆明)為例,對復合空調系統(tǒng)在不同氣候條件下的全年動態(tài)運行性能進行模擬仿真,與傳統(tǒng)機房空調系統(tǒng)進行對比分析,考察復合空調系統(tǒng)在不同地區(qū)應用的適用性。本文提出的蒸發(fā)冷卻式復合空調系統(tǒng),充分考慮了服務對象的室內負荷特性及室外冷源的特性,在保障運行可靠性基礎上,充分利用了自然冷源。本文通過在定性分析和模擬仿真上的研究結果表明,復合空調系統(tǒng)相比于傳統(tǒng)空調系統(tǒng)不僅能夠保障冷卻可靠性,同時還能兼顧節(jié)能性和經濟性。
[Abstract]:As an air processor to regulate indoor temperature, humidity, cleanliness and other parameters, air conditioner is a bridge connecting service object and outdoor environment, and has developed rapidly in recent years. On the basis of summarizing the existing energy saving technology of two kinds of air conditioners and combining with the requirement of temperature and humidity of the service object, this paper puts forward a kind of steam compression refrigeration technology and separate heat pipe technology. Evaporative cooling technology is organically integrated into the evaporative cooling composite air conditioning system. In this paper, the following aspects of the evaporative cooling composite air conditioning system are studied: firstly, The evaporative cooling composite air conditioning system is constructed, and compared with the traditional air-conditioning system, the energy saving property is qualitatively analyzed. Because of the high requirement of indoor temperature, humidity and cleanliness of the craft machine room air conditioning system, Therefore, the air conditioning design standard of the engine room is chosen as the design criterion, and the most unfavorable heat pipe condition is taken as the design condition. The main components of the composite air conditioning system are designed and calculated, and the design parameters are checked under the steam compression refrigeration condition. In order to ensure the optimal performance of the composite air conditioning system in each refrigeration mode, and then to ensure the reliability and efficiency of the composite air conditioning system throughout the year. Secondly, the mathematical model of the main components of the composite air conditioning system is established, in which, In order to study the variation rule of internal state parameters of two vessels (air-cooled evaporator and evaporative condenser), a steady distribution parameter model was established for the two vessels. At the same time, the centralized parameter model of scroll compressor and thermal expansion valve is established, and the model is discretely solved. Thirdly, according to the mathematical model of each component of composite air conditioning system, The mathematical model of dynamic operation in each refrigeration mode of composite air conditioning system is constructed, and the solution flow of the model is studied. On the basis of this, the mathematical model of dynamic operation of composite air conditioning system is established throughout the year, taking Shenyang area as an example. The performance of composite air conditioning system is simulated and compared with that of traditional air-conditioning system in computer room. Finally, the typical climate conditions of China (Shenyang, Beijing, Changsha) are selected to analyze the energy efficiency of composite air conditioning system. Guangzhou, Kunming) as an example, the full-year dynamic operation performance of composite air-conditioning system under different climatic conditions was simulated and compared with the traditional air-conditioning system in the engine room. The applicability of the composite air conditioning system in different regions is investigated. The evaporative cooling composite air conditioning system proposed in this paper takes full account of the indoor load characteristics of the service object and the characteristics of the outdoor cold source, and on the basis of ensuring the operational reliability, The results of qualitative analysis and simulation show that compared with traditional air conditioning system, composite air conditioning system can not only guarantee cooling reliability, but also give consideration to energy saving and economy.
【學位授予單位】：東北大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU83

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本文編號：1577840