【摘要】：隨著人民生活水平的提高和工業(yè)生產(chǎn)的發(fā)展，大空間建筑愈來愈多，如各種音樂廳，體育館，歌劇院，籃球館等。隨著我國制造加工業(yè)的迅猛發(fā)展，各類工業(yè)廠房等大空間建筑也大量涌現(xiàn)，使用空調(diào)系統(tǒng)的大空間建筑也愈來愈普遍。對于現(xiàn)代的工藝車間，不但要滿足工藝方面的要求，而且還要營造良好的室內(nèi)人工環(huán)境，空氣調(diào)節(jié)是實現(xiàn)和保障這些工藝條件和環(huán)境的最佳手段。氣流組織是空氣調(diào)節(jié)的一個重要環(huán)節(jié)，它直接影響室內(nèi)的空調(diào)效果，是關(guān)系到房間工作區(qū)的溫濕度基數(shù)、精度及區(qū)域溫差、工作區(qū)的氣流速度及清潔程度和人們舒適感覺的重要因素，是一切空調(diào)工程設(shè)計中必須考慮和重視的問題。而送風(fēng)參數(shù)和送回風(fēng)口高度是影響室內(nèi)氣流組織的重要因素，所以研究不同送風(fēng)參數(shù)和回風(fēng)口高度對室內(nèi)氣流尤其是工作區(qū)氣流的影響具有及其重要的意義。 隨著計算機硬件和軟件技術(shù)的發(fā)展和數(shù)值模擬計算方法的日趨成熟，出現(xiàn)了基于現(xiàn)有流體力學(xué)的商用CFD軟件。使得應(yīng)用CFD技術(shù)模擬高大空間空調(diào)系統(tǒng)變成可能�？諝馓幚韱卧獧C組結(jié)合加濕設(shè)備能滿足大空間對溫濕度的要求，并且能使室內(nèi)具有良好的熱舒適性。 本文首先介紹了流體軟件CFD及數(shù)學(xué)理論知識，在理論上驗證了研究方法的可行性。以某大型食品生產(chǎn)車間制面車間的車間前段為研究對象，，首先對車間的空調(diào)系統(tǒng)進(jìn)行設(shè)計，車間主要采用六臺空氣處理單元機組循環(huán)送風(fēng)。其次，利用CFD軟件，對廠房建立物理模型，設(shè)立邊界條件，通過對不同工況下室內(nèi)溫度場，速度場的數(shù)值模擬，分析不同工況下的氣流組織形式，通過空氣分布特性指標(biāo)對所選氣流組織方式熱舒適性進(jìn)行評價。比較并分析其評價結(jié)果，得出最佳送風(fēng)形式和類似的大空間車間的空調(diào)設(shè)計規(guī)律。本文通過對不同送風(fēng)速度3.1m/s、5m/s、6m/s，不同送風(fēng)角度10°、20°、30°和不同送風(fēng)高度6m、8m，之間疊加的12種工況進(jìn)行分析，得出送風(fēng)速度6m/s,夾角30°工況室內(nèi)溫度場，速度場的分布最均勻，氣流組織狀況最好。
[Abstract]:With the improvement of people's living standards and the development of industrial production, there are more and more large space buildings, such as concert halls, gymnasiums, opera houses, basketball halls and so on. With the rapid development of manufacturing and processing industry in China, a large number of large-space buildings, such as industrial buildings, have emerged, and large-space buildings using air-conditioning systems have become more and more common. For the modern craft workshop, it is necessary not only to meet the requirements of the process, but also to create a good indoor artificial environment. Air conditioning is the best means to realize and guarantee these process conditions and environment. Air distribution is an important part of air conditioning, which directly affects the indoor air conditioning effect and is related to the temperature and humidity base, precision and regional temperature difference of the working area of the room. The air velocity and cleanliness of the working area and the important factors of people's comfort are the important problems that must be considered and paid attention to in all air conditioning engineering design. The parameters of the air supply and the height of the return air outlet are the important factors affecting the indoor air flow distribution, so it is of great significance to study the influence of the different air supply parameters and the height of the return air outlet on the indoor air flow, especially the air flow in the working area. With the development of computer hardware and software technology and the maturity of numerical simulation methods, commercial CFD software based on fluid dynamics has emerged. It is possible to use CFD technology to simulate the large space air conditioning system. Air treatment unit combined with humidification equipment can meet the requirements of temperature and humidity in large space, and can make indoor thermal comfort. In this paper, the fluid software CFD and mathematical theory are introduced, and the feasibility of the research method is verified in theory. Taking the front section of a large-scale food production workshop as the research object, the air conditioning system of the workshop is designed firstly. Six air treatment unit units are mainly used for circulating air supply in the workshop. Secondly, by using CFD software, the physical model and boundary conditions of the workshop are established. Through the numerical simulation of indoor temperature field and velocity field under different working conditions, the air distribution forms under different working conditions are analyzed. The thermal comfort of the selected air distribution mode is evaluated by the air distribution characteristic index. Comparing and analyzing the evaluation results, the optimum air supply form and similar air conditioning design law of large space workshop are obtained. Based on the analysis of 12 operating conditions of different supply air speeds of 3.1 m / s, 5 m / s, 6 m / s, 10 擄, 20 擄, 30 擄, and different supply air heights of 6 m and 8 m, the results show that the air supply velocity is 6 m / s. The distribution of velocity field is the most uniform and the condition of airflow distribution is the best in the indoor temperature field with angle of 30 擄.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU834.53;TB494

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