本文選題：室內(nèi)空氣品質(zhì)　切入點：氣流組織　出處：《東北電力大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：21世紀(jì)以來，隨著大氣污染的加重，人們對空氣品質(zhì)的要求也越來越高。人們每天在室內(nèi)的時間大約占整天時間的80%左右，所以室內(nèi)環(huán)境對人體健康有著更為重要的影響。而空調(diào)系統(tǒng)的主要目的就是為室內(nèi)人員創(chuàng)造一個健康、舒適的環(huán)境。但是隨著對顆粒物污染研究的深入，有關(guān)顆粒物對人體的危害已成為主要問題。這就對空調(diào)系統(tǒng)對室內(nèi)空氣品質(zhì)的調(diào)節(jié)能力提出了新一輪的挑戰(zhàn)。 本文以商業(yè)軟件FLUENT為平臺，以夏季工況下某一學(xué)院研究生辦公室的空調(diào)房間作為物理研究對象，，對空調(diào)房間內(nèi)三種常見的氣流組織方式進行模擬計算。采用可實現(xiàn)k模型并結(jié)合壁面函數(shù)法建立空調(diào)房間的速度場、溫度場的三維湍流數(shù)學(xué)模型，通過研究各場相應(yīng)參數(shù)的分布規(guī)律，從而得到三種氣流組織各自的優(yōu)缺點。同時，本文又建立了設(shè)置等效滲透顆粒污染源的空調(diào)房間物理模型，對顆粒相采用顆粒軌道模型，模擬了不同氣流組織下，顆粒污染物在空調(diào)房間內(nèi)的運動軌跡和濃度分布，并分析了粒徑對顆粒物濃度分布的影響。Airpak軟件可以形象、快捷地展現(xiàn)出模擬的結(jié)果，方便我們對數(shù)據(jù)進行提取和比較分析。 模擬結(jié)果表明，對于本文中所模擬房間，異側(cè)上送下回的通風(fēng)形式會造成氣流短路設(shè)計不合理。而同側(cè)上送下回以及下送頂回的通風(fēng)形式均可以滿足設(shè)計規(guī)范以及人體舒適性的要求。但在考慮到要將室外滲透進室內(nèi)的顆粒物污染物更有效的排出房間，提高室內(nèi)空氣的潔凈度，則同側(cè)上送下回通風(fēng)形式的優(yōu)勢將凸顯出來。下送頂回的空氣流型不利于顆粒物的排出，特別是粒徑較大的顆粒物。
[Abstract]:Since the 21st century, with the aggravation of air pollution, the demand for air quality has become higher and higher. People spend about 80% of the whole day indoors. So the indoor environment has a more important impact on human health. The main purpose of the air conditioning system is to create a healthy and comfortable environment for indoor personnel. The harm of particulate matter to human body has become a major problem, which poses a new challenge to the ability of air conditioning system to regulate indoor air quality. This paper takes the commercial software FLUENT as the platform, takes the air conditioning room of a graduate office of a college under the summer working condition as the physics research object, In this paper, three kinds of common airflow organization modes in air conditioning room are simulated and calculated. By using the realizable k model and the wall function method, the three dimensional turbulent mathematical model of the air conditioning room and temperature field is established. By studying the distribution law of the corresponding parameters of each field, the advantages and disadvantages of the three kinds of airflow organization are obtained. At the same time, the physical model of air conditioning room with equivalent permeable particle pollution source is established, and the particle track model is used for the particle phase. The movement trajectory and concentration distribution of particulate pollutants in air conditioning room were simulated under different airflow conditions. The influence of particle size on particle concentration distribution was analyzed. Airpak software can visualize and quickly show the simulation results. It is convenient for us to extract and compare the data. The simulation results show that, for the room simulated in this paper, The airflow short-circuit design will be unreasonable due to the ventilation form of the offside up and down return, and the ventilation form of the same side up and down return and down top return can meet the requirements of the design code and the human body comfort. The particulate pollutants that infiltrate the room more effectively, To improve the cleanliness of indoor air, the advantage of the same side air flow pattern will be highlighted, and the air flow pattern of top return is not conducive to the emission of particulate matter, especially the larger particle size.
【學(xué)位授予單位】：東北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU831;X51

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本文編號：1646070